wolfSSL Changelog

What's new in wolfSSL 5.7.0

Apr 7, 2024

Vulnerabilities:
[High] CVE-2024-0901 Potential denial of service and out of bounds read. Affects TLS 1.3 on the server side when accepting a connection from a malicious TLS 1.3 client. If using TLS 1.3 on the server side it is recommended to update the version of wolfSSL used. Fixed in this GitHub pull request #7099
[Med] CVE-2024-1545 Fault Injection vulnerability in RsaPrivateDecryption function that potentially allows an attacker that has access to the same system with a victims process to perform a Rowhammer fault injection. Thanks to Junkai Liang, Zhi Zhang, Xin Zhang, Qingni Shen for the report (Peking University, The University of Western Australia)." Fixed in this GitHub pull request #7167
[Med] Fault injection attack with EdDSA signature operations. This affects ed25519 sign operations where the system could be susceptible to Rowhammer attacks. Thanks to Junkai Liang, Zhi Zhang, Xin Zhang, Qingni Shen for the report (Peking University, The University of Western Australia). Fixed in this GitHub pull request #7212
New Feature Additions:
Added --enable-experimental configure flag to gate out features that are currently experimental. Now liboqs, kyber, lms, xmss, and dual-alg-certs require the --enable-experimental flag.
POST QUANTUM SUPPORT ADDITIONS:
Experimental framework for using wolfSSL’s XMSS implementation (PR 7161)
Experimental framework for using wolfSSL’s LMS implementation (PR 7283)
Experimental wolfSSL Kyber implementation and assembly optimizations, enabled with --enable-experimental --enable-kyber (PR 7318)
Experimental support for post quantum dual key/signature certificates. A few known issues and sanitizer checks are in progress with this feature. Enabled with the configure flags --enable-experimental --enable-dual-alg-certs (PR 7112)
CryptoCb support for PQC algorithms (PR 7110)
OTHER FEATURE ADDITIONS:
The Linux kernel module now supports registration of AES-GCM, AES-XTS, AES-CBC, and AES-CFB with the kernel cryptosystem through the new --enable-linuxkm-lkcapi-register option, enabling automatic use of wolfCrypt implementations by the dm-crypt/luks and ESP subsystems. In particular, wolfCrypt AES-XTS with –enable-aesni is faster than the native kernel implementation.
CryptoCb hook to one-shot CMAC functions (PR 7059)
BER content streaming support for PKCS7_VerifySignedData and sign/encrypt operations (PR 6961 & 7184)
IoT-Safe SHA-384 and SHA-512 support (PR 7176)
I/O callbacks for content and output with PKCS7 bundle sign/encrypt to reduce peak memory usage (PR 7272)
Microchip PIC24 support and example project (PR 7151)
AutoSAR shim layer for RNG, SHA256, and AES (PR 7296)
wolfSSL_CertManagerUnloadIntermediateCerts API to clear intermediate certs added to certificate store (PR 7245)
Implement SSL_get_peer_signature_nid and SSL_get_peer_signature_type_nid (PR 7236)
Enhancements and Optimizations:
Remove obsolete user-crypto functionality and Intel IPP support (PR 7097)
Support for RSA-PSS signatures with CRL use (PR 7119)
Enhancement for AES-GCM use with Xilsecure on Microblaze (PR 7051)
Support for crypto cb only build with ECC and NXP CAAM (PR 7269)
Improve liboqs integration adding locking and init/cleanup functions (PR 7026)
Prevent memory access before clientSession->serverRow and clientSession->serverIdx are sanitized (PR 7096)
Enhancements to reproducible build (PR 7267)
Update Arduino example TLS Client/Server and improve support for ESP32 (PR 7304 & 7177)
XC32 compiler version 4.x compatibility (PR 7128)
Porting for build on PlayStation 3 and 4 (PR 7072)
Improvements for Espressif use; SHA HW/SW selection and use on ESP32-C2/ESP8684, wolfSSL_NewThread() type, component cmake fix, and update TLS client example for ESP8266 (PR 7081, 7173, 7077, 7148, 7240)
Allow crypto callbacks with SHA-1 HW (PR 7087)
Update OpenSSH port to version 9.6p1(PR 7203)
ARM Thumb2 enhancements, AES-GCM support for GCM_SMALL, alignment fix on key, fix for ASM clobber list (PR 7291,7301,7221)
Expand heap hint support for static memory build with more x509 functions (PR 7136)
Improving ARMv8 ChaCha20 ASM (alignment) (PR 7182)
Unknown extension callback wolfSSL_CertManagerSetUnknownExtCallback added to CertManager (PR 7194)
Implement wc_rng_new_ex for use with devID’s with crypto callback (PR 7271)
Allow reading 0-RTT data after writing 0.5-RTT data (PR 7102)
Send alert on bad PSK binder error (PR 7235)
Enhancements to CMake build files for use with cross compiling (PR 7188)
Fixes:
Fix for checking result of MAC verify when no AAD is used with AES-GCM and Xilinx Xilsecure (PR 7051)
Fix for Aria sign use (PR 7082)
Fix for invalid dh_ffdhe_test test case using Intel QuickAssist (PR 7085)
Fixes for TI AES and SHA on TM4C with HW acceleration and add full AES GCM and CCM support with TLS (PR 7018)
Fixes for STM32 PKA use with ECC (PR 7098)
Fixes for TLS 1.3 with crypto callbacks to offload KDF / HMAC operation (PR 7070)
Fix include path for FSP 3.5 on Renesas RA6M4 (PR 7101)
Siphash x64 asm fix for use with older compilers (PR 7299)
Fix for SGX build with SP (PR 7308)
Fix to Make it mandatory that the cookie is sent back in new ClientHello when seen in a HelloRetryRequest with (PR 7190)
Fix for wrap around behavior with BIO pairs (PR 7169)
OCSP fixes for parsing of response correctly when there was a revocation reason and returning correct error value with date checks (PR 7241 & 7255)
Fix build with NO_STDIO_FILESYSTEM and improve checks for XGETENV (PR 7150)
Fix for DTLS sequence number and cookie when downgrading DTLS version (PR 7214)
Fix for write_dup use with chacha-poly cipher suites (PR 7206)
Fix for multiple handshake messages in one record failing with OUT_OF_ORDER_E when downgrading from TLS 1.3 to TLS 1.2 (PR 7141)
Fix for AES ECB build with Thumb and alignment (PR 7094)
Fix for negotiate handshake until the end in wolfSSL_read/wolfSSL_write if hitting an edge case with want read/write (PR 7237)

New in wolfSSL 5.6.4 (Oct 31, 2023)

Vulnerabilities:
[Medium] A fix was added, but still under review for completeness, for a Bleichenbacher style attack, leading to being able to decrypt a saved TLS connection and potentially forge a signature after probing with a large number of trial connections. This issue is around RSA decryption and affects static RSA cipher suites on the server side, which are not recommended to be used and are off by default. Static RSA cipher suites were also removed from the TLS 1.3 protocol and only present in TLS 1.2 and lower. All padding versions of RSA decrypt are affected since the code under review is outside of the padding processing. Information about the private keys is NOT compromised in affected code. It's recommended to disable static RSA cipher suites and update the version of wolfSSL used if using RSA private decryption alone outside of TLS. The fix is located in this pull request (#6896)
New Feature Additions:
DTLS 1.3 PQC: support fragmenting the second ClientHello message. This allows arbitrarily long keys to be used, opening up support for all PQC ciphersuites in DTLS 1.3.
SM2/SM3/SM4: Chinese cipher support including TLS 1.3 and 1.2 cipher suites. SM2 SP implementation available.
Ability to parse ASN1 only with SMIME_read_PKCS7
Added support for MemUse Entropy on Windows
Added Ada Bindings for wolfSSL
Added a PEM example that converts to and from DER/PEM.
Added LMS/HSS and XMSS/XMSS^MT wolfcrypt hooks, both normal and verify-only options.
Added support for the AES EAX mode of operation
Port for use with Hitch (https://github.com/varnish/hitch) added
Add XTS API's to handle multiple sectors in new port ot VeraCrypt
Enhancements and Optimizations:
Turned on SNI by default on hosts with resources
Improved support for Silicon Labs Simplicity Studio and the ERF32 Gecko SDK
Thumb-2 and ARM32 Curve25519 and Ed25519 assembly have significantly improved performance.
Thumb-2 AES assembly code added.
Thumb-2 and ARM32 SP implementations of RSA, DH and ECC have significantly improved performance.
Minor performance improvements to SP ECC for Intel x64.
AES-XTS assembly code added for Intel x64, Aarch64 and ARM32.
Added support for X963 KDFs to ECIES.
Added 32-bit type only implementation of AES GMULT using tables.
Add support for nginx version 1.25.0
Add support for Kerberos version 5 1.21.1
Check all CRL entries in case a single issuer has multiple CRL's loaded
CRL verify the entire chain including loaded CA's
Added example for building wolfSSL as an Apple universal binary framework using configure
Sniffer tool now supports decrypting TLS sessions using secrets obtained from a SSLKEYLOGFILE
Updates made for EBSNET port
Update "--enable-jni" to include additional defines for expanded JNI support. Also includes JCE and JSSE builds under the single enable option now.
Fixes:
Fixed error handling when decrypted pre-master secret is too long when using static RSA.
Added a fix for keymod use with i.MX RT1170 CAAM blobs
Added a fix for AES-GCM use with Petalinux Xilinx
Fixed wc_SignatureGenerate_ex to not call verify twice
Fixed wolfCrypt FIPS DLL on Win32
Fixed TFM math library big-endian reading implementation when a zero length buffer is passed in.
Fixed NO_CERT configurations to build correctly.
Fixed ARM AES-GCM streaming assembly when –enable-opensslextra defined.
Added modulus checks to heap math implementation of mp_exptmod().
Fixed Windows assembly code to handle that certain XMM registers are non-volatile.
Aarch64 SP ECC implementation of sp_256_mont_dbl_4 has the register list for the assembly code fixed to include all used registers.
mp_sqrt_mod_prime fixed to limit the number of iterations of a loop to handle malicious non-prime values being passed in.
Ignore session ID's shorter than 32 bytes instead of erroring out

New in wolfSSL 5.6.3 (Sep 15, 2023)

New in wolfSSL 5.6.2 (Jun 21, 2023)

Release 5.6.2 of wolfSSL embedded TLS has bug fixes and new features including:
Vulnerabilities:
[Low] In cases where a malicious agent could analyze cache timing at a very detailed level, information about the AES key used could be leaked during T/S Box lookups. One such case was shown on RISC-V hardware using the MicroWalk tool (https://github.com/microwalk-project/Microwalk). A hardened version of T/S Box lookups was added in wolfSSL to help mitigate this potential attack and is now on by default with RISC-V builds and can be enabled on other builds if desired by compiling wolfSSL with the macro WOLFSSL_AES_TOUCH_LINES. Thanks to Jan Wichelmann, Christopher Peredy, Florian Sieck, Anna Pätschke, Thomas Eisenbarth (University of Lübeck): MAMBO-V: Dynamic Side-Channel Leakage Analysis on RISC-V. Fixed in the following GitHub pull request #6309
[High] In previous versions of wolfSSL if a TLS 1.3 client gets neither a PSK (pre shared key) extension nor a KSE (key share extension) when connecting to a malicious server, a default predictable buffer gets used for the IKM value when generating the session master secret. Using a potentially known IKM value when generating the session master secret key compromises the key generated, allowing an eavesdropper to reconstruct it and potentially allowing surreptitious access to or meddling with message contents in the session. This issue does not affect client validation of connected servers, nor expose private key information, but could result in an insecure TLS 1.3 session when not controlling both sides of the connection. We recommend that TLS 1.3 client side users update the version of wolfSSL used. Thanks to Johannes from Sectra Communications and Linköping University for the report. Fixed in the following GitHub pull request #6412
New Feature Additions:
New Ports and Expansions:
Add support for STM32H5
Add support for Renesas TSIP v1.17
Add Renesas SCE RSA crypto-only support
STARCORE DSP port and example builds added
Add the function wc_PKCS7_SetDefaultSignedAttribs for setting PKCS7 signed attributes to use with PKCS7 bundle creation
NXP IMX6Q CAAM port with QNX and performance optimizations for AES-CTR
New Build Options:
ASN.1 print utility to decode ASN.1 syntax and print out human readable text --enable-asn-print. Utility app is located in the directory ./examples/asn1/
Add introspection for math build, wc_GetMathInfo() to get information about the math library compiled into the linked wolfSSL library
Implement TLS recommendations from RFC 9325 for hardening TLS/DTLS security. Enabled with the autoconf flag --enable-harden-tls.
Add option to support disabling thread local storage, --disable-threadlocal
Added wc_DsaSign_ex() and wc_DsaVerify_ex() for handling alternative digest algorithms with DSA Sign/Verify
Implement atomic operations interface. Macros auto-detect if atomic operations are expected to be available, can be turned off with the macro WOLFSSL_NO_ATOMICS
Added support for DTLS 1.3 Authentication and Integrity-Only Cipher Suites
Expand crypto callback to have a device ID find callback function with wc_CryptoCb_SetDeviceFindCb. Enabled with the macro WOLF_CRYPTO_CB_FIND
Enhancements and Optimizations:
Optimizations:
Increased performance with ChaCha20 C implementation and general XOR operations
Added integer type to the ASN.1 sequencing with ASN.1 Integer sequence
With wolfSSL_get_x509_next_altname reset alt name list to head once cycled through if compiling with the macro WOLFSSL_MULTICIRCULATE_ALTNAMELIST
Additional key validity sanity checks on input to wolfSSL_EC_KEY_set_private_key
adds support for TLSv1.3 stateful session tickets when using SSL_OP_NO_TICKET
Memory Optimizations:
Improvements to stack usage and management with SP int math library
Optimization to TLS 1.3 server to remove caching messages for Ed25519/Ed448
Added a HAVE_CURL macro build for building a subset of the wolfSSL library when linking with cURL
Memory usage improvement with reducing the size of alignment needed with AES
Reduce run time memory used with ECC operations and ALT_ECC_SIZE
Fixes and improvements for building edge cases such as crypto callback without hash-drbg with low footprint options
Support HAVE_SESSION_TICKET build option without depending on realloc
Documentation:
Instructions for GPDMA on STM32 configuration added
Add in instructions for compiling with zephyr on STM32
Documentation fixup for wolfSSL_get_chain_cert()
Fix the file pointed to in the TI RTOS documentation that we maintain
Documentation for wolfSSL_CertManagerFreeCRL
Updates made to AES and Chacha documentation
Update Japanese comments for Ed25519, AES, and other miscellaneous items
Tests:
Add in an option for easily testing malloc failures when building with WOLFSSL_MEM_FAIL_COUNT macro
Updated in process for using Expect vs Assert to facilitate more malloc failure tests
Enhance wolfCrypt test for builds that do not have ECC SECP curves enabled
ESP32 platform-specific VisualGDB test & benchmark projects
Update to dependencies in docker container file used for tests
Fix up for base 10 output with bundled benchmark application
Port Updates:
Zephyr port update, compile time warning fixes, misc. fixes when used with TLS and update of includes
Update RIOT-OS to not compile out use of writev by default
Update Micrium port to enable use of STM32_RNG
Micrium updates for XMEMOVE and XSTRTOK use
Various Espressif HW crypto, SHA2, AES, MP updates
Added in ASIO build option with CMake builds
General Enhancements:
Global codebase cleanup for C89 compliance and wolfCrypt -Wconversion hygiene
PKCS#11 enhancement adding a callback for RSA key size when using a hardware key, by default 2048 bit key is used
Allow for unknown OIDs in extensions in wolfSSL_X509_set_ext()
Allow user to override XSTAT by defining the macro XSTAT when compiling
Support UPN and SID with x509 certificate extensions and custom OID build
Write next IV in wolfSSL_DES_ede3_cbc_encrypt for better handling of inline encryption
Adding NO_ASN_TIME_CHECK build option for compiling out certificate before/after checks
Improve different peer recvfrom handling and error reporting with ipv4 vs ipv6
Fixes:
Fix for STM32 ECC sign and verify out of bounds buffer write when the hash length passed in is larger than the key size. Thanks to Maximilian for the report.
Fix to skip Async_DevCtxInit when using init rsa/ecc label/id api's
Revert WOLFSSL_NO_ASN_STRICT macro guard around alternate names directory list
In async mode, don't retry decrypting if a valid error is encountered on a packet parse attempt
Add additional sanity check on PKCS7 index value in wc_PKCS7_DecryptKekri
Fix for padding when using an AuthEnvelope PKCS7 type with GCM/CCM stream ciphers
Fix siphash assembly so that no register is left behind
Fix to not send a TLS 1.3 session ID resume response when resuming and downgrading to a protocol less than TLS 1.3
Fix overwriting serialNumber by favouriteDrink when generating a certificate using Cert struct
Fix for the default realloc used with EspressIf builds
Track SetDigest usage to avoid invalid free under error conditions
DTLS v1.3 fix for epoch 0 check on plaintext message
Fix for session ticket memory leak in wolfSSL_Cleanup
Fixes for propagating SendAlert errors when the peer disconnects
Replace XMEMCPY with XMEMMOVE to fix valgrind-3.15.0 reports "Source and destination overlap in memcpy" when using --enable-aesgcm-stream
Fix for potential out-of-bounds write edge case in fp_mod_2d with --enable-fastmath math library
Fix getting ECC key size in stm32_ecc_sign_hash_ex
Fix for case where wc_PeekErrorNodeLineData was not unlocking error queue on error
Fix for async ECC shared secret state
Fix for better error checking with sp_gcd with SP int math library
Fix memory leak in TLSX_KeyShare_Setup when handling an error case
Fix for double free edge case in InitOCSPRequest when handling a memory allocation failure
X509 NAME Entry fix for leaking memory on error case
Fix wolfssl_asn1_time_to_tm setting unexpected fields in tm struct
Fix for FIPS ECC integrity check with crypto callback set
BN_to_ASN1_INTEGER fix for handling leading zero byte padding when needed
Fix a typo in PP macro and add a ceiling to guard against implementation bugs
DTLS 1.3 fix for using the correct label when deriving the resumption key
OCSP fix for GetDateInfo edge case with non ASN template builds
Allow a user set certificate callback function to override the skipAddCA flag when parsing a certificate
SP int: sp_radix_size when radix 10 fix temp size for handling edge case
Fixes and improvements for handling failures with memory allocations
Fix for DecodeECC_DSA_Sig to handle r and s being initialized
Fix for wc_ecc_is_point to ensure that the x and y are in range [0, p-1] and z is one (affine ordinates)
Build Fixes:
Fix for building on Windows with CMake and using USER_SETTINGS and fix for options.h creation with CMake when using USER_SETTINGS
CMake fixes and improvements for use with mingw32
Fix for building with wpas and x509 small options
Check if colrm is available for options.h creation when using autoconf
Clean up NO_BIG_INT build, removing WOLFSSL_SP_MATH macro and heapmath compile
Fix PKCS#7 build with NO_PKCS7_STREAM
Fix compilation error in CC-RX and remove unnecessary public key import
SP Build fixes for ARM assembly with ARMv6 clz and ARM thumb debug build
For to not advertise support for RSA in TLS extensions when compiled with NO_RSA

New in wolfSSL 5.6.0 (Apr 3, 2023)

New Feature Additions:
ASN template is now the default ASN parsing implementation when compiling with configure
Added in support for TLS v1.3 Encrypted Client Hello (ECH) and HPKE (Hybrid Public Key Encryption)
DTLS 1.3 stateless server ClientHello parsing support added
Ports:
Add RX64/RX71 SHA hardware support
Port to RT1170 and expand NXP CAAM driver support
Add NuttX integration files for ease of use
Updated Stunnel support for version 5.67 Compatibility Layer
Add in support for AES-CCM with EVP
BN compatibility API refactoring and separate API created
Expanding public key type cipher suite list strings support
Misc:
Support pthread_rwlock and add enable option
Add wolfSSL_CertManagerLoadCABuffer_ex() that takes a user certificate chain flag and additional verify flag options
Docker build additions for wolfSSL library and wolfCLU application
Add favorite drink pilot attribute type to get it from the encoding
Added in support for indefinite length BER parsing with PKCS12
Add dynamic session cache which allocates sessions from the heap with macro SESSION_CACHE_DYNAMIC_MEM
Improvements / Optimizations:
Tests:
Additional CI (continuous integration) testing and leveraging of GitHub workflows
Add CI testing for wpa_supplicant, OpenWrt and OpenVPN using GitHub workflows
Add compilation of Espressif to GitHub workflows tests
Refactoring and improving error results with wolfCrypt unit test application
Minor warning fixes from Coverity static analysis scan
Add new SHA-512/224 and SHA-512/256 tests
Used codespell and fixed some minor typos
Ports:
Improve TLS1.2 client authentication to use TSIP
Updated Kyber macro to be WOLFSSL_HAVE_KYBER and made changes that make Kyber work on STM32
AES-GCM Windows assembly additions
CRLF line endings, trailing spaces for C# Wrapper Projects Compatibility Layer
Update PubKey and Key PEM-to-DER APIs to support return of needed DER size
Allow reading ENC EC PRIVATE KEY as well via wolfSSL_PEM_read_bio_ECPrivateKey
Improve wolfSSL_EC_POINT_cmp to handle Jacobian ordinates
Fix issue with BIO_reset() and add BIO_FLAGS_MEM_RDONLY flag support for read only BIOs
SP:
In SP math library rework mod 3 and use count leading zero instruction
Fix with SP ECC sign to reject the random k generated when r is 0
With SP math add better detection of when add won't work and double is needed with point_add_qz1 internal function
With SP int fail when buffer writing to is too small for number rather than discarding the extra values
Builds:
Define WOLFSSL_SP_SMALL_STACK if wolfSSL is build with --enable-smallstack
Fix CMake to exclude libm when DH is not enabled
Allow building of SAKKE as external non-FIPS algorithm with wolfmikey product
Add option to add library suffix, --with-libsuffix
ASN template compile option WOLFSSL_ASN_INT_LEAD_0_ANY to allow leading zeros
Add user_settings.h template for wolfTPM to examples/configs/user_settings_wolftpm.h
Purge the AES variant of Dilithium
Expand WOLFSSL_NO_ASN_STRICT to allow parsing of explicit ECC public key
Remove relocatable text in ARMv7a AES assembly for use with FIPS builds
Expand checking for hardware that supports ARMv7a neon with autotools configure
Sanity check on allocation fails with DSA and FP_ECC build when zeroizing internal buffer
Additional TLS alerts sent when compiling with WOLFSSL_EXTRA_ALERTS macro defined
Benchmarking:
Update wolfCrypt benchmark Windows build files to support x64 Platform
Add SHA512/224 and SHA512/256 benchmarks, fixed CVS macro and display sizes
Separate AES-GCM streaming runs when benchmarked
No longer call external implementation of Kyber from benchmark
Fix for benchmarking shake with custom block size
Fixes for benchmark help -alg list and block format Documentation/Examples
Document use of wc_AesFree() and update documentation of Ed25519 with Doxygen
Move the wolfSSL Configuration section higher in QUIC.md
Add Japanese Doxygen documentation for cmac.h, quic.h and remove incomplete Japanese doxygen in asn_public.h
Espressif examples run with local wolfSSL now with no additional setup needed
Added a fix for StartTLS use In the example client
Add a base-line user_settings.h for use with FIPS 140-3 in XCode example app
Optimizations:
AES-NI usage added for AES modes ECB/CTR/XTS
Misc:
Update AES-GCM stream decryption to allow long IVs
Internal refactor to use wolfSSL_Ref functions when incrementing or decrementing the structures reference count and fixes for static analysis reports
Cleanup function logging making adjustments to the debug log print outs
Remove realloc dependency in DtlsMsgCombineFragBuckets function
Refactor to use WOLFSSL_CTX’s cipher suite list when possible
Update internal padding of 0’s with DSA sign and additional tests with mp_to_unsigned_bin_len function
With DTLS SRTP use wolfSSL_export_keying_material instead of wc_PRF_TLS
Updated macro naming from HAVE_KYBER to be WOLFSSL_HAVE_KYBER
Update AES XTS encrypt to handle in-place encryption properly
With TLS 1.3 add option to require only PSK with DHE
Fixes:
Ports:
Fix for AES use with CAAM on imx8qxp with SECO builds
Fix for PIC32 crypto HW and unused TLSX_SetResponse
Fix warning if ltime is unsigned seen with QNX build
Updates and fix for Zephyr project support
Include sys/time.h for WOLFSSL_RIOT_OS
Move X509_V errors from enums to defines for use with HAProxy CLI
Fix IAR compiler warnings resolved
Fix for STM32 Hash peripherals (like on F437) with FIFO depth = 1
ESP32 fix for SHA384 init with hardware acceleration
Builds:
Add WOLFSSL_IP_ALT_NAME macro define to --enable-curl
Fixes for building with C++17 and avoiding clashing with byte naming
Fixes SP math all build issue with small-stack and no hardening
Fix for building with ASN template with NO_ASN_TIME defined
Fix building FIPSv2 with WOLFSSL_ECDSA_SET_K defined
Don't allow aesgcm-stream option with kcapi
Fix DTLS test case for when able to read peers close notify alert on FreeBSD systems
Fix for "expression must have a constant value" in tls13.c with Green Hills compiler
Fixes for building KCAPI with opensslextra enabled
Fix warnings of shadows min and subscript with i486-netbsd-gcc compiler
Fix issue with async and WOLFSSL_CHECK_ALERT_ON_ERR
Fix for PKCS7 with asynchronous crypto enabled
Math Library:
SP Aarch64 fix for conditional changed in asm needing "cc" and fix for ECC P256 mont reduce
In SP builds add sanity check with DH exp. to check the output length for minimum size
In SP math fix scalar length check with EC scalar multiply
With SP int fix handling negative character properly with read radix
Add error checks before setting variable err in SP int with the function sp_invmod_mont_ct
Fix to add sanity check for malloc of zero size in fastmath builds
In fastmath fix a possible overflow in fp_to_unsigned_bin_len length check
Heapmath fast mod. reduce fix
Compatibility Layer:
Fixes for encoding/decoding ecc public keys and ensure i2d public key functions do not include any private key information
Fix for EVP_EncryptUpdate to update outl on empty input
Fix SE050 RSA public key loading and RSA/ECC SE050 TLS Compatibility
Rework EC API and validate point after setting it
Fix for X509 RSA PSS with compatibility layer functions
Fix size of structures used with SHA operations when built with opensslextra for Espressif hardware accelerated hashing
Added sanity check on key length with wolfSSL_CMAC_Init function
Fix for return value type conversion of bad mutex error in logging function
Fix NID conflict NID_givenName and NID_md5WithRSAEncryption
Fix unguarded XFPRINTF calls with opensslextra build
Fix wolfSSL_ASN1_INTEGER_to_BN for negative values
Fix for potential ASN1_STRING leak in wolfSSL_X509_NAME_ENTRY_create_by_txt and wolfSSL_X509_NAME_ENTRY_create_by_NID when memory allocation fails
Misc:
Add sanity check to prevent an out of bounds read with OCSP response decoding
Sanity check to not allow 0 length with bit string and integer when parsing ASN1 syntax
Adjust RNG sanity checks and remove error prone first byte comparison
With PKCS7 add a fix for GetAsnTimeString() to correctly increment internal data pointer
PKCS7 addition of sequence around algo parameters with authenvelop
DSA fixes for clearing mp_int before re-reading data and avoid mp_clear without first calling mp_init
Fix for SRTP setting bitfield when it is encoded for the TLS extension
Fix for handling small http headers when doing CRL verification
Fix for ECCSI hash function to validate the output size and curve size
Fix for value of givenName and name being reversed with CSR generation
Fix for error type returned (OCSP_CERT_UNKNOWN) with OCSP verification
Fix for a potential memory leak with ProcessCSR when handling OCSP responses
Fix for VERIFY_SKIP_DATE flag not ignoring date errors when set
Fix for zlib decompression buffer issue with PKCS7
Fix for DTLS message pool send size used and DTLS server saving of the handshake sequence
Fix to propagate WOLFSSL_TICKET_RET_CREATE error return value from DoDecryptTicket()
Fix for handling long session IDs with TLS 1.3 session tickets
Fix for AES-GCM streaming when caching an IV
Fix for test case with older selftest that returns bad padding instead of salt len error
Add fix for siphash cache and added in additional tests
Fix potential out of bounds memset to 0 in error case with session export function used with --enable-sessionexport builds
Fix possible NULL dereference in TLSX_CSR_Parse with TLS 1.3
Fix for sanity check on RSA pad length with no padding using the build macro WC_RSA_NO_PADDING

New in wolfSSL 5.5.4 (Feb 22, 2023)

New Feature Additions:
QUIC related changes for HAProxy integration and config option
Support for Analog Devices MAXQ1080 and MAXQ1065
Testing and build of wolfSSL with NuttX
New software based entropy gatherer with configure option --enable-entropy-memuse
NXP SE050 feature expansion and fixes, adding in RSA support and conditional compile of AES and CMAC
Support for multi-threaded sniffer
Improvements / Optimizations:
Benchmark and Tests:
Add alternate test case for unsupported static memory API when testing mutex allocations
Additional unit test cases added for AES CCM 256-bit
Initialize and free AES object with benchmarking AES-OFB
Kyber with DTLS 1.3 tests added
Tidy up Espressif ESP32 test and benchmark examples
Rework to be able to run API tests individually and add display of time taken per test
Build and Port Improvements:
Add check for 64-bit ABI on MIPS64 before declaring a 64-bit CPU
Add support to detect SIZEOF_LONG in armclang and diab
Added in a simple example working on Rx72n
Update azsphere support to prevent compilation of file included inline
--enable-brainpool configure option added and default to on when custom curves are also on
Add RSA PSS salt defines to engine builds if not FIPS v2
Post Quantum:
Remove kyber-90s and route all Kyber through wolfcrypt
Purge older version of NTRU and SABER from wolfSSL
SP Math:
Support static memory build with sp-math
SP C, SP int: improve performance
SP int: support mingw64 again
SP int: enhancements to guess 64-bit type and check on NO_64BIT macro set before using long long
SP int: check size required when using sp_int on stack
SP: --enable-sp-asm now enables SP by default if not set
SP: support aarch64 big endian
DTLS:
Allow DTLS 1.3 to compile when FIPS is enabled
Allow for stateless DTLS client hello parsing
Misc:
Easier detection of DRBG health when using Intel’s RDRAND by updating the structures status value
Detection of duplicate known extensions with TLS
PKCS#11 handle a user PIN that is a NULL_PTR, compile time check in finding keys, add initialization API
Update max Cert Policy size based on RFC 5280
Add Android CA certs path for wolfSSL_CTX_load_system_CA_certs()
Improve logic for enabling system CA certs on Apple devices
Stub functions to allow for cpuid public functions with non-intel builds
Increase RNG_SECURITY_STRENGTH for FIPS
Improvements in OpenSSL Compat ERR Queue handling
Support ASN1/DER CRLs in LoadCertByIssuer
Expose more ECC math functions and improve async shared secret
Improvement for sniffer error messages
Warning added that renegotiation in TLS 1.3 requires session ticket
Adjustment for TLS 1.3 post auth support
Rework DH API and improve PEM read/write
Fixes:
Build Fixes:
Fix --enable-devcrypto build error for sys without u_int8_t type
Fix casts in evp.c and build issue in ParseCRL
Fixes for compatibility layer building with heap hint and OSSL callbacks
fix compile error due to Werro=undef on gcc-4.8
Fix mingw-w64 build issues on windows
Xcode project fixes for different build settings
Initialize variable causing failures with gcc-11 and gcc-12 with a unique wolfSSL build configuration
Prevent WOLFSSL_NO_MALLOC from breaking RSA certificate verification
Fixes for various tests that do not properly handle WC_PENDING_E with async. builds
Fix for misc HashObject to be excluded for WOLFCRYPT_ONLY
OCSP Fixes:
Correctly save next status with OCSP response verify
When the OCSP responder returns an unknown exception, continue through to checking the CRL
Math Fixes:
Fix for implicit conversion with 32-bit in SP math
Fix for error checks when modulus is even with SP int build
Fix for checking of err in _sp_exptmod_nct with SP int build
ECC cofactor fix when checking scalar bits
ARM32 ASM: don't use ldrd on user data
SP int, fix when ECC specific size code included
Port Fixes:
Fixes for STM32 PKA ECC (not 256-bit) and improvements for AES-GCM
Fix for cryptocell signature verification with ECC
Benchmark devid changes, CCM with SECO fix, set IV on AES import into SECO
Compat. Layer Fixes:
Fix for handling DEFAULT:... cipher suite list
Fix memory leak in wolfSSL_X509_NAME_ENTRY_get_object
Set alt name type to V_ASN1_IA5STRING
Update name hash functions wolfSSL_X509_subject_name_hash and wolfSSL_X509_issuer_name_hash to hash the canonical form of subject
Fix wolfSSL_set_SSL_CTX() to be usable during handshake
Fix X509_get1_ocsp to set num of elements in stack
X509v3 EXT d2i: fix freeing of aia
Fix to remove recreation of certificate with wolfSSL_PEM_write_bio_X509()
Link newly created x509 store's certificate manager to self by default to assist with CRL verification
Fix for compatibility EC_KEY_new_by_curve_name to not create a key if the curve is not found
Misc:
Free potential signer malloc in a fail case
fix other name san parsing and add RID cert to test parsing
WOLFSSL_OP_NO_TICKET fix for TLSv1.2
fix ASN template parsing of X509 subject directory attribute
Fix the wrong IV size with the cipher suite TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256
Fix incorrect self signed error return when compiled with certreq and certgen.
Fix wrong function name in debug comment with wolfSSL_X509_get_name_oneline()
Fix for decryption after second handshake with async sniffer
Allow session tickets to properly resume when using PQ KEMs
Add sanity overflow check to DecodeAltNames input buffer access

New in wolfSSL 5.5.3 (Nov 4, 2022)

New in wolfSSL 5.2.0 (Feb 22, 2022)

Vulnerabilities:
[High] A TLS v1.3 server who requires mutual authentication can be bypassed. If a malicious client does not send the certificate_verify message a client can connect without presenting a certificate even if the server requires one. Thank you to Aina Toky Rasoamanana and Olivier Levillain of Télécom SudParis.
[High] A TLS v1.3 client attempting to authenticate a TLS v1.3 server can have its certificate check bypassed. If the sig_algo in the certificate_verify message is different than the certificate message checking may be bypassed. Thank you to Aina Toky Rasoamanana and Olivier Levillain of Télécom SudParis.
New Feature Additions:
Example applications for Renesas RX72N with FreeRTOS+IoT
Renesas FSP 3.5.0 support for RA6M3
For TLS 1.3, improved checks on order of received messages.
Support for use of SHA-3 cryptography instructions available in ARMv8.2-A architecture extensions. (For Apple M1)
Support for use of SHA-512 cryptography instructions available in ARMv8.2-A architecture extensions. (For Apple M1)
Fixes for clang -Os on clang >= 12.0.0
Expose Sequence Numbers so that Linux TLS (kTLS) can be configured
Fix bug in TLSX_ALPN_ParseAndSet when using ALPN select callback.
Allow DES3 with FIPS v5-dev.
Include HMAC for deterministic ECC sign build
Add --enable-chrony configure option. This sets build options needed to build the Chrony NTP (Network Time Protocol) service
Add support for STM32U575xx boards.
Fixes for NXP’s SE050 Ed25519/Curve25519.
TLS: Secure renegotiation info on by default for compatibility.
Inline C code version of ARM32 assembly for cryptographic algorithms available and compiling for improved performance on ARM platforms
Configure HMAC: define NO_HMAC to disable HMAC (default: enabled)
ISO-TP transport layer support added to wolfio for TLS over CAN Bus
Fix initialization bug in SiLabs AES support
Domain and IP check is only performed on leaf certificates
ARM PSA Support (Platform Security Architecture) API:
Initial support added for ARM’s Platform Security Architecture (PSA) API in wolfCrypt which allows support of ARM PSA enabled devices by wolfSSL, wolfSSH, and wolfBoot and wolfCrypt FIPS.
Included algorithms: ECDSA, ECDH, HKDF, AES, SHA1, SHA256, SHA224, RNG
ECICE Updates:
Support for more encryption algorithms: AES-256-CBC, AES-128-CTR, AES-256-CTR
Support for compressed public keys in messages.
Math Improvements:
Improved performance of X448 and Ed448 through inlining Karatsuba in square and multiplication operations for 128-bit implementation (64-bit platforms with 128-bit type support).
SP Math C implementation: fix for corner case in curve specific implementations of Montgomery Reduction (P-256, P-384).
SP math all: assembly snippets added for ARM Thumb. Performance improvement on platform.
SP math all: ARM64/32 sp_div_word assembly snippets added to remove dependency on __udiv3.
SP C implementation: multiplication of two signed types with overflow is undefined in C. Now cast to unsigned type before multiplication is performed.
SP C implementation correctly builds when using CFLAG: -m32
OpenSSL Compatibility Layer:
Added DH_get_2048_256 to compatibility layer.
wolfSSLeay_version now returns the version of wolfSSL
Added C++ exports for API’s in wolfssl/openssl/crypto.h. This allows better compatibility when building with a C++ compiler.
Fix for OpenSSL x509_NAME_hash mismatch
Implement FIPS_mode and FIPS_mode_set in the compat layer.
Fix for certreq and certgen options with openssl compatibility
wolfSSL_BIO_dump() and wolfSSL_OBJ_obj2txt() rework
Fix IV length bug in EVP AES-GCM code
dd new ASN1_INTEGER compatibility functions.
Fix wolfSSL_PEM_X509_INFO_read with NO_FILESYSTEM
CMake Updates:
Check for valid override values.
Add `KEYGEN` option.
Cleanup help messages.
Add options to support wolfTPM.
New Algorithms and Protocols:
AES-SIV (RFC 5297)
DTLS SRTP (RFC 5764), used with WebRTC to agree on profile for new real-time session keys
SipHash MAC/PRF for hash tables. Includes inline assembly for x86_64 and Aarch64.
Remove Obsolete Algorithms:
IDEA
Rabbit
HC-128

New in wolfSSL 5.1.1 (Jan 4, 2022)

New in wolfSSL 5.1.0 (Dec 28, 2021)

Vulnerabilities:
[Low] Potential for DoS attack on a wolfSSL client due to processing hello packets of the incorrect side. This affects only connections using TLS v1.2 or less that have also been compromised by a man in the middle attack. Thanks to James Henderson, Mathy Vanhoef, Chris M. Stone, Sam L. Thomas, Nicolas Bailleut, and Tom Chothia (University of Birmingham, KU Leuven, ENS Rennes for the report.
[Low] Client side session resumption issue once the session resumption cache has been filled up. The hijacking of a session resumption has been demonstrated so far with only non verified peer connections. That is where the client is not verifying the server’s CA that it is connecting to. There is the potential though for other cases involving proxies that are verifying the server to be at risk, if using wolfSSL in a case involving proxies use wolfSSL_get1_session and then wolfSSL_SESSION_free when done where possible. If not adding in the session get/free function calls we recommend that users of wolfSSL that are resuming sessions update to the latest version (wolfSSL version 5.1.0 or later). Thanks to the UK's National Cyber Security Centre (NCSC) for the report.
Post Quantum:
Post quantum resistant algorithms used with Apache port
NIST round 3 FALCON Signature Scheme support added to TLS 1.3 connections
FALCON added to the benchmarking application
Testing of cURL with wolfSSL post quantum resistant build
Compatibility Layer Additions:
Updated NGINX port to NGINX version 1.21.4
Updated Apache port to Apache version 2.4.51
Add support for SSL_OP_NO_TLSv1_2 flag with wolfSSL_CTX_set_options function
Support added for the functions
SSL_CTX_get_max_early_data
SSL_CTX_set_max_early_data
SSL_set_max_early_data
SSL_get_max_early_data
SSL_CTX_clear_mode
SSL_CONF_cmd_value_type
SSL_read_early_data
SSL_write_early_data
Misc.:
Crypto callback support for AES-CCM added. A callback function can be registered and used instead of the default AES-CCM implementation in wolfSSL.
Added AES-OFB to the FIPS boundary for future FIPS validations.
Add support for custom OIDs used with CSR (certificate signing request) generation using the macro WOLFSSL_CUSTOM_OID
Added HKDF extract callback function for use with TLS 1.3
Add variant from RFC6979 of deterministic ECC signing that can be enabled using the macro WOLFSSL_ECDSA_DETERMINISTIC_K_VARIANT
Added the function wc_GetPubKeyDerFromCert to get the public key from a DecodedCert structure
Added the functions wc_InitDecodedCert, wc_ParseCert and wc_FreeDecodedCert for access to decoding a certificate into a DecodedCert structure
Added the macro WOLFSSL_ECC_NO_SMALL_STACK for hybrid builds where the numerous malloc/free with ECC is undesired but small stack use is desired throughout the rest of the library
Added the function wc_d2i_PKCS12_fp for reading a PKCS12 file and parsing it
Fixes:
PORT Fixes:
Building with Android wpa_supplicant and KeyStore
Setting initial value of CA certificate with TSIP enabled
Cryptocell ECC build fix and fix with RSA disabled
IoT-SAFE improvement for Key/File slot ID size, fix for C++ compile, and fixes for retrieving the public key after key generation
Math Library Fixes:
Check return values on TFM library montgomery function in case the system runs out of memory. This resolves an edge case of invalid ECC signatures being created.
SP math library sanity check on size of values passed to sp_gcd.
SP math library sanity check on exponentiation by 0 with mod_exp
Update base ECC mp_sqrtmod_prime function to handle an edge case of zero
TFM math library with Intel MULX multiply fix for carry in assembly code
Misc.:
Fix for potential heap buffer overflow with compatibility layer PEM parsing
Fix for edge memory leak case with an error encountered during TLS resumption
Fix for length on inner sequence created with wc_DhKeyToDer when handling small DH keys
Fix for sanity check on input argument to DSA sign and verify
Fix for setting of the return value with ASN1 integer get on an i386 device
Fix for BER to DER size checks with PKCS7 decryption
Fix for memory leak with PrintPubKeyEC function in compatibility layer
Edge case with deterministic ECC key generation when the private key has leading 0’s
Fix for build with OPENSSL_EXTRA and NO_WOLFSSL_STUB both defined
Use page aligned memory with ECDSA signing and KCAPI
Skip expired sessions for TLS 1.3 rather than turning off the resume behavior
Fix for DTLS handling dropped or retransmitted messages
Improvements/Optimizations:
Build Options and Warnings
Bugfix: could not build with liboqs and without DH enabled
Build with macro NO_ECC_KEY_EXPORT fixed
Fix for building with the macro HAVE_ENCRYPT_THEN_MAC when session export is enabled
Building with wolfSentry and HAVE_EX_DATA macro set
Math Libraries:
Improvement for performance with SP C implementation of montgomery reduction for ECC (P256 and P384) and SP ARM64 implementation for ECC (P384)
With SP math handle case of dividing by length of dividend
SP math improvement for lo/hi register names to be used with older GCC compilers
Misc.:
ASN name constraints checking code refactor for better efficiency and readability
Refactor of compatibility layer stack free’ing calls to simplify and reduce code
Scrubbed code for trailing spaces, hard tabs, and any control characters
Explicit check that leaf certificate's public key type match cipher suite signature algorithm
Additional NULL sanity checks on WOLFSSL struct internally and improve switch statement fallthrough
Retain OCSP error value when CRL is enabled with certificate parsing
Update to NATIVE LwIP support for TCP use
Sanity check on PEM size when parsing a PEM with OpenSSL compatibility layer API.
SWIG wrapper was removed from the codebase in favor of dedicated Java and Python wrappers.
Updates to bundled example client for when to load the CA, handling print out of IP alt names, and printing out the peers certificate in PEM format
Handling BER encoded inner content type with PKCS7 verify
Checking for SOCKET_EPIPE errors from low level socket
Improvements to cleanup in the case that wolfSSL_Init fails
Update test and example certificates expiration dates

New in wolfSSL 5.0.0 (Nov 1, 2021)

Vulnerabilities:
[Low] Hang with DSA signature creation when a specific q value is used in a maliciously crafted key. If a DSA key with an invalid q value of either 1 or 0 was decoded and used for creating a signature, it would result in a hang in wolfSSL. Users that are creating signatures with DSA and are using keys supplied from an outside source are affected.
[Low] Issue with incorrectly validating a certificate that has multiple subject alternative names when given a name constraint. In the case where more than one subject alternative name is used in the certificate, previous versions of wolfSSL could incorrectly validate the certificate. Users verifying certificates with multiple alternative names and name constraints, are recommended to either use the certificate verify callback to check for this case or update the version of wolfSSL used. Thanks to Luiz Angelo Daros de Luca for the report.
New Feature Additions:
New Product:
FIPS 140-3 -- currently undergoing laboratory testing, code review and ultimately CMVP validation. Targeting the latest FIPS standard.
Ports:
IoT-Safe with TLS demo
SE050 port with support for RNG, SHA, AES, ECC (sign/verify/shared secret) and ED25519
Support for Renesas TSIP v1.13 on RX72N
Post Quantum:
Support for OQS's (liboqs version 0.7.0) implementation of NIST Round 3 KEMs as TLS 1.3 groups --with-liboqs
Hybridizing NIST ECC groups with the OQS groups
Remove legacy NTRU and QSH
Make quantum-safe groups available to the compatibility layer
Linux Kernel Module:
Full support for FIPS 140-3, with in-kernel power on self test (POST) and conditional algorithm self test(s) (CAST)
--enable-linuxkm-pie -- position-independent in-kernel wolfCrypt container, for FIPS
Vectorized x86 acceleration in PK algs (RSA, ECC, DH, DSA) and AES/AES-GCM
Vectorized x86 acceleration in interrupt handlers
Support for Linux-native module signatures
Complete SSL/TLS and Crypto API callable from other kernel module(s)
Support for LTS kernel lines: 3.16, 4.4, 4.9, 5.4, 5.10
Compatibility Layer Additions:
Ports:
Add support for libssh2
Add support for pyOpenSSL
Add support for libimobiledevice
Add support for rsyslog
Add support for OpenSSH 8.5p1
Add support for Python 3.8.5
API/Structs Added:
RR_lib_error_string
EVP_blake2
WolfSSL_set_client_CA_list
WolfSSL_EVP_sha512_224
WolfSSL_EVP_sha512_256
Wc_Sha512_224/2256Hash
Wc_Sha512_224/256Hash
Wc_InitSha512_224/256
Wc_InitSha512_224/256_ex
Wc_Sha512_224/256Update
Wc_Sha512_224/256FinalRaw
Wc_Sha512_224/256Final
Wc_Sha512_224/256Free
Wc_Sha512_224/256GetHash
Wc_Sha512_224/256Copy
Wc_Sha512_224/256SetFlags
Wc_Sha512_224/256GetFlags
Wc_Sha512_224/256Transform
EVP_MD_do_all and OBJ_NAME_do_all
EVP_shake128
EVP_shake256
SSL_CTX_set_num_tickets
SSL_CTX_get_num_tickets
SSL_CIPHER_get_auth_nid
SSL_CIPHER_get_cipher_nid
SSL_CIPHER_get_digest_nid
SSL_CIPHER_get_kx_nid
SSL_CIPHER_is_aead
SSL_CTX_set_msg_callback
A2i_IPADDRESS
GENERAL_NAME_print
X509_VERIFY_PARAM_set1_ip
EVP_CIPHER_CTX_set_iv_length
PEM_read_bio_RSA_PUBKEY
I2t_ASN1_OBJECT
DH_set_length
Set_tlsext_max_fragment_length
AUTHORITY_iNFO_ACCESS_free
EVP_PBE_scrypt
ASN1_R_HEADER_TOO_LONG
ERR_LIB
X509_get_default_cert_file/file_env/dir/dir_env() stubs
SSL_get_read_ahead/SSL_set_read_ahead()
SSL_SESSION_has_ticket()
SSL_SESSION_get_ticket_lifetime_hint()
DIST_POINT_new
DIST_POINT_free
DIST_POINTS_free
CRL_DIST_POINTS_free
Sk_DIST_POINT_push
Sk_DIST_POINT_value
Sk_DIST_POINT_num
Sk_DIST_POINT_pop_free
Sk_DIST_POINT_free
X509_get_extension_flags
X509_get_key_usage
X509_get_extended_key_usage
ASN1_TIME_to_tm
ASN1_TIME_diff
PEM_read_X509_REQ
ERR_load_ERR_strings
BIO_ssl_shutdown
BIO_get_ssl
BIO_new_ssl_connect
BIO_set_conn_hostname
NID_pkcs9_contentType
Misc.:
KCAPI: add support for using libkcapi for crypto (Linux Kernel)
Configure option for --with-max-rsa-bits= and --with-max-ecc-bits=
SP ARM Thumb support for Keil and performance improvements
Add support for WOLFSSL_VERIFY_POST_HANDSHAKE verify mode
PKCS #11: support static linking with PKCS #11 library --enable-pkcs11=static LIBS=-l
Add build option --enable-wolfclu for use with wolfCLU product
Add support for X9.42 header i.e “BEGIN X9.42 DH PARAMETERS”
Add --enable-altcertchains for configuring wolfSSL with alternate certificate chains feature enabled
Add public API wc_RsaKeyToPublicDer_ex to allow getting RSA public key without ASN.1 header (can return only seq + n + e)
Add SNI and TLSx options to CMake build
Fixes:
PORT Fixes:
Add return value checking for FREESCALE_RNGA
Fix MMCAU_SHA256 type warnings
Fixes for building with Microchip XC32 and ATECC
Math Library Fixes:
TFM check that the modulus length is valid for fixed data array size
TFM fp_submod_ct fix check for greater
Check return value of mp_grow in mp_mod_2d
Fix for ECC point multiply to error out on large multipliers
SP ECC error on multiplier larger than curve order
TLS 1.3:
TLS1.3 sanity check for cases where a private key is larger than the configured maximum
Fix early data max size handling in TLS v1.3
Fixes for PK callbacks with TLS v1.3
Check min downgrade when no extensions are sent with the ServerHello
Misc.:
Previously wolfSSL enum values were used as NID’s. Now only the compatibility layer NID enums are the NID values:
CTC_SHAwDSA -> NID_dsaWithSHA1
CTC_SHA256wDSA -> NID_dsa_with_SHA256
CTC_MD2wRSA -> NID_md2WithRSAEncryption
CTC_MD5wRSA -> NID_md5WithRSAEncryption
CTC_SHAwRSA -> NID_sha1WithRSAEncryption
CTC_SHA224wRSA -> NID_sha224WithRSAEncryption
CTC_SHA256wRSA -> NID_sha256WithRSAEncryption
CTC_SHA384wRSA -> NID_sha384WithRSAEncryption
CTC_SHA512wRSA -> NID_sha512WithRSAEncryption
CTC_SHA3_224wRSA -> NID_RSA_SHA3_224
CTC_SHA3_256wRSA -> NID_RSA_SHA3_256
CTC_SHA3_384wRSA -> NID_RSA_SHA3_384
CTC_SHA3_512wRSA -> NID_RSA_SHA3_512
CTC_SHAwECDSA -> NID_ecdsa_with_SHA1
CTC_SHA224wECDSA -> NID_ecdsa_with_SHA224
CTC_SHA256wECDSA -> NID_ecdsa_with_SHA256
CTC_SHA384wECDSA -> NID_ecdsa_with_SHA384
CTC_SHA512wECDSA -> NID_ecdsa_with_SHA512
CTC_SHA3_224wECDSA -> NID_ecdsa_with_SHA3_224
CTC_SHA3_256wECDSA -> NID_ecdsa_with_SHA3_256
CTC_SHA3_384wECDSA -> NID_ecdsa_with_SHA3_384
CTC_SHA3_512wECDSA -> NID_ecdsa_with_SHA3_512
DSAk -> NID_dsa
RSAk -> NID_rsaEncryption
ECDSAk -> NID_X9_62_id_ecPublicKey
BASIC_CA_OID -> NID_basic_constraints
ALT_NAMES_OID -> NID_subject_alt_name
CRL_DIST_OID -> NID_crl_distribution_points
AUTH_INFO_OID -> NID_info_access
AUTH_KEY_OID -> NID_authority_key_identifier
SUBJ_KEY_OID -> NID_subject_key_identifier
INHIBIT_ANY_OID -> NID_inhibit_any_policy
Fix for DES IV size used with FIPSv2
Fix signed comparison issue with serialSz
Fix missing CBIOSend and properly guard hmac in DupSSL()
Fix calculation of length of encoding in ssl.c
Fix encoding to check proper length in asn.c
Fix for wc_ecc_ctx_free and heap hint
Fix for debug messages with AF_ALG build
Fix for static memory with bucket size matching.
Fixes for SRP with heap hint.
Fixes for CAAM build macros and spelling for Keil build
Sniffer fix for possible math issue around 64-bit pointer and 32-bit unsigned int
Fix for sniffer TCP sequence rollover
WolfSSL_PEM_write_bio_PUBKEY to write only the public part
Fix for sending only supported groups in TLS extension
Fix for sniffer to better handle spurious retransmission edge case
SSL_set_alpn_protos and SSL_CTX_set_alpn_protos now returns 0 on successFixes issue with SSL_CTX_set1_curves_list and SSL_set1_curves_list not checking the last character of the names variable provided, non-0 on failure to better match expected return values
Fixes and improvements for crypto callbacks with TLS (mutual auth)
Fix for bad memory_mutex lock on static memory cleanup
Zero terminate name constraints strings when parsing certificates
Fix for verifying a certificate when multiple permitted name constraints are used
Fix typo in ifdef for HAVE_ED448
Fix typos in comments in SHA512
Add sanity check on buffer size with ED25519 key decode
Sanity check on PKCS7 stream amount read
PKCS7 fix for double free on error case and sanity check on set serial number
Sanity check on PKCS7 input size wc_PKCS7_ParseSignerInfo
Forgive a DTLS session trying to send too much at once
Improvements/Optimizations:
Build Options and Warnings;
Rework of RC4 disable by default and depreciation
WolfSSL as a Zephyr module (without setup.sh)
Add include config.h to bio.c
Support for PKCS7 without AES CBC.
Fixes for building without AES CBC
Added WOLFSSL_DH_EXTRA to --enable-all and --enable-sniffer
Add a CMake option to build wolfcrypt test and bench code as libraries
GCC makefile: allow overriding and provide more flexibility
Math Libraries;
Improve performance of fp_submod_ct() and fp_addmod_ct()
Improve performance of sp_submod_ct() and sp_addmod_ct()
SP int, handle even modulus with exponentiation
New:
Cleanups for Arduino examples and memory documentation
Refactor hex char to byte conversions
Added GCC-ARM TLS server example
Improvements to session locking to allow per-row
Improved sniffer statistics and documentation
EVP key support for heap hint and crypto callbacks
Reduced stack size for dh_generation_test and Curve ASN functions
Espressif README Syntax / keyword highlighting / clarifications
AARCH64 SHA512: implementation using crypto instructions added
Wc_RsaPSS_CheckPadding_ex2 added for use with HEAP hint
Wc_AesKeyWrap_ex and wc_AesKeyUnWrap_ex bound checks on input and output sizes
Add additional error handling to wolfSSL_BIO_get_len
Add code to use popen and the command 'host', useful with qemu
Adjustment to subject alt names order with compatibility layer to better match expected order
Reduce BIO compatibility layer verbosity
Set a default upper bound on error queue size with compatibility layer
WOLFSSL_CRL_ALLOW_MISSING_CDP macro for Skip CRL verification in case no CDP in peer cert
Fixes for scan-build LLVM-13 and expanded coverage
Increase the default DTLS_MTU_ADDITIONAL_READ_BUFFER and make it adjustablec

New in wolfSSL 4.8.1 (Jul 17, 2021)

New in wolfSSL 4.8.0 (Jul 14, 2021)

Vulnerabilities:
[Low] OCSP request/response verification issue. In the case that the serial number in the OCSP request differs from the serial number in the OCSP response the error from the comparison was not resulting in a failed verification. We recommend users that have wolfSSL version 4.6.0 and 4.7.0 with OCSP enabled update their version of wolfSSL. Version 4.5.0 and earlier are not affected by this report. Thanks to Rainer, Roee, Barak, Hila and Shoshi (from Cymotive and CARIAD) for the report.
[Low] CVE-2021-24116: Side-Channel cache look up vulnerability in base64 PEM decoding for versions of wolfSSL 4.5.0 and earlier. Versions 4.6.0 and up contain a fix and do not need to be updated for this report. If decoding a PEM format private key using version 4.5.0 and older of wolfSSL then we recommend updating the version of wolfSSL used. Thanks to Florian Sieck, Jan Wichelmann, Sebastian Berndt and Thomas Eisenbarth for the report.
New Feature Additions:
New Product:
Added wolfSentry build with --enable-wolfsentry and tie-ins to wolfSSL code for use with wolfSentry
Ports:
QNX CAAM driver added, supporting ECC black keys, CMAC, BLOBs, and TRNG use
_WIN32_WCE wolfCrypt port added
INTIME_RTOS directory support added
Added support for STM32G0
Renesas RX: Added intrinsics for rot[rl], revl (thanks @rliebscher)
Added support for running wolfcrypt/test/testwolfcrypt on Dolphin emulator to test DEVKITPRO port
Zephyr project port updated to latest version 2.6.X
ASN.1 and PKCS:
Storing policy constraint extension from certificate added
Added support for NID_favouriteDrink pilot
Added the API function wc_EncryptPKCS8Key to handle encrypting a DER, PKCS#8-formatted key
Compatibility Layer Additions:
Open Source PORTS Added/Updated:
OpenVPN
OpenLDAP
socat-1.7.4.1
Updated QT port for 5.15.2
Changes to extend set_cipher_list() compatibility layer API to have set_ciphersuites compatibility layer API capability
Added more support for SHA3 in the EVP layer
API Added:
MD5/MD5_Transform
SHA/SHA_Transform/SHA1_Transform
SHA224/SHA256_Transform/SHA512_Transform
SSL_CTX_get0_param/SSL_CTX_set1_param
X509_load_crl_file
SSL_CTX_get_min_proto_version
EVP_ENCODE_CTX_new
EVP_ENCODE_CTX_free
EVP_EncodeInit
EVP_EncodeUpdate
EVP_EncodeFinal
EVP_DecodeInit
EVP_DecodeUpdate
EVP_DecodeFinal
EVP_PKEY_print_public
BIO_tell
THREADID_current
THREADID_hash
SSL_CTX_set_ecdh_auto
RAND_set_rand_method()
X509_LOOKUP_ctrl()
RSA_bits
EC_curve_nist2nid
EC_KEY_set_group
SSL_SESSION_set_cipher
SSL_set_psk_use_session_callback
EVP_PKEY_param_check
DH_get0_pqg
CRYPTO_get_ex_new_index
SSL_SESSION_is_resumable
SSL_CONF_cmd
SSL_CONF_CTX_finish
SSL_CTX_keylog_cb_func
SSL_CTX_set_keylog_callback
SSL_CTX_get_keylog_callback
Misc:
Added wolfSSL_CTX_get_TicketEncCtx getter function to return the ticket encryption ctx value
Added wc_AesKeyWrap_ex and wc_AesKeyUnWrap_ex APIs to accept an Aes object to use for the AES operations
Added implementation of AES-GCM streaming (--enable-aesgcm-stream)
Added deterministic generation of k with ECC following RFC6979 when the macro WOLFSL_ECDSA_DETERMINISTIC_K is defined and wc_ecc_set_deterministic function is called
Implemented wc_DsaParamsDecode and wc_DsaKeyToParamsDer
Asynchronous support for TLS v1.3 TLSX ECC/DH key generation and key agreement
Added crypto callback support for Ed/Curve25519 and SHA2-512/384
TLS 1.3 wolfSSL_key_update_response function added to see if a update response is needed
Fixes:
Fix for detecting extra unused bytes that are in an ASN1 sequence appended to the end of a valid ECC signature
Fix for keyid with ktri CMS (breaks compatibility with previous keyid ASN1 syntax)
Fix for failed handshake if a client offers more than 150 cipher suites. Thanks to Marcel Maehren, Philipp Nieting, Robert Merget from Ruhr University Bochum Sven Hebrok, Juraj Somorovsky from Paderborn University
Fix for default order of deprecated elliptic curves SECP224R1, SECP192R1, SECP160R1. Thanks to Marcel Maehren, Philipp Nieting, Robert Merget from Ruhr University Bochum Sven Hebrok, Juraj Somorovsky from Paderborn University
Fix for corner TLS downgrade case where a TLS 1.3 setup that allows for downgrades but has TLS 1.3 set as the minimum version would still downgrade to TLS 1.2
PKCS7 (Multiple fixes throughout regarding memory leaks with SMIME and heap buffer overflows due to streaming functionality):
Fix PKCS7 dynamic content save/restore in PKCS7_VerifySignedData
Fix for heap buffer overflow on compare with wc_PKCS7_DecryptKtri
Fix for heap buffer overflow with wc_PKCS7_VerifySignedData
Fix for heap buffer overflow with wc_PKCS7_DecodeEnvelopedData
Check size of public key used with certificate passed into wc_PKCS7_InitWithCert before XMEMCPY to avoid overflow
Fix for heap buffer overflow fix for wolfSSL_SMIME_read_PKCS7
Fix to cleanly free memory in error state with wolfSSL_SMIME_read_PKCS7
SMIME error checking improvements and canonicalize multi-part messages before hashing
DTLS Fixes:
DTLS fix to correctly move the Tx sequence number forward
DTLS fix for sequence and epoch number with secure renegotiation cookie exchange
Fix for Chacha-Poly AEAD for DTLS 1.2 with secure renegotiation
PORT Fixes:
Fix AES, aligned key for the HW module with DCP port
Fix ATECC608A TNGTLS certificate size issue (thanks @vppillai)
Fixes for mingw compile warnings
Fixes for NXP LTC ECC/RSA
Fix ESP32 RSA hw accelerator initialization issue
Fixes for STM32 PKA with ECC
Fixes for STM32 AES GCM for HAL's that support byte sized headers
Espressif ESP32 SHA_CTX macro conflict resolved
Math Library Fixes:
For platforms that support limits.h or windows make sure both SIZEOF_LONG_LONG and SIZEOF_LONG are set to avoid issues with CTC_SETTINGS
SP C 32/64: fix corner cases around subtraction affecting RSA PSS use
Fix to return the error code from sp_cond_swap_ct when malloc fails
Fix potential memory leak with small stack in the function fp_gcd
Static Analysis Fixes
Fixes made from Coverity analysis including:
Cleanups for some return values,
Fix for leak with wolfSSL_a2i_ASN1_INTEGER
Sanity check on length in wolfSSL_BN_rand
Sanity check size in TLSX_Parse catching a possible integer overflow
Fixes found with -fsanitize=undefined testing
Fix null dereferences or undefined memcpy calls
Fix alignment in myCryptoDevCb
Fix default DTLS context assignment
Added align configure option to force data alignment
Misc:
Fix for wolfSSL_ASN1_TIME_adj set length
Fix for freeing structure on error case in the function AddTrustedPeer
Return value of SSL_read when called after bidirectional shutdown
Fix for build options ./configure --enable-dtls --disable-asn
Fix for detection of a salt length from an RSA PSS signature
Fix to free up globalRNGMutex mutex when cleaning up global RNG
Fix leak when multiple hardware names are in SAN
Fix nonblocking ret value from CRL I/O callbacks
Fix wolfSSL_BIO_free_all return type to better match for compatibility layer
Fix for make distcheck, maintainer-clean, to allow distribution builds
Fix for async with fragmented packets
Fix for the build or RSA verify or public only
Fix for return value of wolfSSL_BIO_set_ssl to better match expected compatibility layer return value
Fix for sanity checks on size of issuer hash and key along with better freeing on error cases with DecodeBasicOcspResponse
Fix for potential memory leak with wolfSSL_OCSP_cert_to_id
Improvements/Optimizations:
DTLS/TLS Code Base:
Improved TLS v1.3 time rollover support
TLS 1.3 PSK: use the hash algorithm to choose cipher suite
TLS Extended Master Secret ext: TLS13 - send in second Client Hello if in first
TLS Encrypt then MAC: check all padding bytes are the same value
wolfSSL_GetMaxRecordSize updated to now take additional cipher data into account
Updated session export/import with DTLS to handle a new internal options flag
Refactored dtls_expected_peer_handshake_number handling
Added wolfSSL_CTX_get_ephemeral_key and wolfSSL_get_ephemeral_key for loading a constant key in place of an ephemeral one
Improved checking of XSNPRINTF return value in DecodePolicyOID
Build Options and Warnings:
Added wolfSSL_CTX_set_verify to the ABI list
Adjusted FP_ECC build to not allow SECP160R1, SECP160R2, SECP160K1 and SECP224K1. FP_ECC does not work with scalars that are the length of the order when the order is longer than the prime.
Added CMake support for CURVE25519, ED25519, CURVE448, and ED448
cmake addition to test paths when building
Added support for session tickets in CMake
Added support for reproducible builds with CMake
Turn on reproducible-build by default when enable-distro
Windows Project: Include the X448 and Ed448 files
GCC-11 compile time warning fixes
Fix for compiling build of ./configure '--disable-tlsv12' '-enable-pkcallbacks'
Added build error for insecure build combination of secure renegotiation enabled with extended master secret disabled when session resumption is enabled
Updated building and running with Apple M1
Apache httpd build without TLS 1.3 macro guard added
Enable SHA3 and SHAKE256 requirements automatically when ED448 is enabled
Added option for AES CBC cipher routines to return BAD_LENGTH_E when called with an input buffer length not a multiple of AES_BLOCK_SIZE
Macro WOLFSSL_SP_INT_DIGIT_ALIGN added for alignment on buffers with SP build. This was needed for compiler building on a Renesas board.
Build support with no hashes enabled an no RNG compiled in
Allow use of FREESCALE hardware RNG without a specific port
Resolved some warnings with Windows builds and PBKDF disabled
Updated the version of autoconf and automake along with fixes for some new GCC-10 warnings
Math Libraries:
SP: Thumb implementation that works with clang
SP math all: sp_cmp handling of negative values
SP C ECC: mont sub - always normalize after sub before check for add
TFM math library prime checking, added more error checks with small stack build
Sanity checks on 0 value with GCD math function
fp_exptmod_ct error checking and small stack variable free on error
Sanity check on supported digit size when calling mp_add_d in non fastmath builds
Support for mp_dump with SP Math ALL
WOLFSSL_SP_NO_MALLOC for both the normal SP build and small SP build now
WOLFSSL_SP_NO_DYN_STACK added for SP small code that is not small stack build to avoid dynamic stack
PKCS 7/8:
wc_PKCS7_DecodeCompressedData to optionally handle a packet without content wrapping
Added setting of content type parsed with PKCS7 wc_PKCS7_DecodeAuthEnvelopedData and wc_PKCS7_DecodeEnvelopedData
PKCS8 code improvements and refactoring
Misc:
Sanity checks on null inputs to the functions wolfSSL_X509_get_serialNumber and wolfSSL_X509_NAME_print_ex
Added ARM CryptoCell support for importing public key with wc_ecc_import_x963_ex()
Improved checking for possible use of key->dp == NULL cases with ECC functions
Updated SHAKE256 to compile with NIST FIPS 202 standard and added support for OID values (thanks to strongX509)
Improved ECC operations when using WOLFSSL_NO_MALLOC
Added WOLFSSL_SNIFFER_FATAL_ERROR for an return value when sniffer is in a fatal state
Allow parsing spaces in Base64_SkipNewline
Issue callback when exceeding depth limit rather than error out with OPENSSL_EXTRA build
Added NXP LTC RSA key generation acceleration

New in wolfSSL 4.7.0 (Feb 22, 2021)

New Feature Additions:
Compatibility Layer expansion SSL_get_verify_mode X509_VERIFY_PARAM API X509_STORE_CTX API added
WOLFSSL_PSK_IDENTITY_ALERT macro added for enabling a subset of TLS alerts
Function wolfSSL_CTX_NoTicketTLSv12 added to enable turning off session tickets with TLS 1.2 while keeping TLS 1.3 session tickets available
Implement RFC 5705: Keying Material Exporters for TLS
Added --enable-reproducible-build flag for making more deterministic library outputs to assist debugging
Fixes:
Fix to free mutex when cert manager is free’d
Compatibility layer EVP function to return the correct block size and type
DTLS secure renegotiation fixes including resetting timeout and retransmit on duplicate HelloRequest
Fix for edge case with shrink buffer and secure renegotiation
Compile fix for type used with curve448 and PPC64
Fixes for SP math all with PPC64 and other embedded compilers
SP math all fix when performing montgomery reduction on one word modulus
Fixes to SP math all to better support digit size of 8-bit
Fix for results of edge case with SP integer square operation
Stop non-ct mod inv from using register x29 with SP ARM64 build
Fix edge case when generating z value of ECC with SP code
Fixes for PKCS7 with crypto callback (devId) with RSA and RNG
Fix for compiling builds with RSA verify and public only
Fix for PKCS11 not properly exporting the public key due to a missing key type field
Call certificate callback with certificate depth issues
Fix for out-of-bounds read in TLSX_CSR_Parse()
Fix incorrect AES-GCM tag generation in the EVP layer
Fix for out of bounds write with SP math all enabled and an edge case of calling sp_tohex on the result of sp_mont_norm
Fix for parameter check in sp_rand_prime to handle 0 length values
Fix for edge case of failing malloc resulting in an out of bounds write with SHA256/SHA512 when small stack is enabled
Improvements/Optimizations:
Added --enable-wolftpm option for easily building wolfSSL to be used with wolfTPM
DTLS macro WOLFSSL_DTLS_RESEND_ONLY_TIMEOUT added for resending flight only after a timeout
Update linux kernel module to use kvmalloc and kvfree
Add user settings option to cmake build
Added support for AES GCM session ticket encryption
Thread protection for global RNG used by wolfSSL_RAND_bytes function calls
Sanity check on FIPs configure flag used against the version of FIPs bundle
enable-aesgcm=table now is compatible with --enable-linuxkm
Increase output buffer size that wolfSSL_RAND_bytes can handle
Out of directory builds resolved wolfSSL can now be built in a separate directory than the root wolfssl directory
Vulnerabilities:
[HIGH] CVE-2021-3336: In earlier versions of wolfSSL there exists a potential man in the middle attack on TLS 1.3 clients. Malicious attackers with a privileged network position can impersonate TLS 1.3 servers and bypass authentication. Users that have applications with client side code and have TLS 1.3 turned on should update to the latest version of wolfSSL. Users that do not have TLS 1.3 turned on or that are server side only are NOT affected by this report. For the code change see https://github.com/wolfSSL/wolfssl/pull/3676.
[LOW] In the case of using custom ECC curves there is the potential for a crafted compressed ECC key that has a custom prime value to cause a hang when imported. This only affects applications that are loading in ECC keys with wolfSSL builds that have compressed ECC keys and custom ECC curves enabled.
[LOW] With TLS 1.3 authenticated-only ciphers a section of the server hello could contain 16 bytes of uninitialized data when sent to the connected peer. This affects only a specific build of wolfSSL with TLS 1.3 early data enabled and using authenticated-only ciphers with TLS 1.3.

New in wolfSSL 4.6.0 (Dec 25, 2020)

New Feature Additions:
New Build Options:
wolfSSL now enables linux kernel module support. Big news for Linux kernel module developers with crypto requirements! wolfCrypt and wolfSSL are now loadable as modules in the Linux kernel, providing the entire libwolfssl API natively to other kernel modules. For the first time on Linux, the entire TLS protocol stack can be loaded as a module, allowing fully kernel-resident TLS/DTLS endpoints with in-kernel handshaking. (--enable-linuxkm, --enable-linuxkm-defaults, --with-linux-source) (https://www.wolfssl.com/loading-wolfssl-into-the-linux-kernel/)
Build tests and updated instructions for use with Apple’s A12Z chipset (https://www.wolfssl.com/preliminary-cryptographic-benchmarks-on-new-apple-a12z-bionic-platform/)
Expansion of wolfSSL SP math implementation and addition of --enable-sp-math-all build option
Apache httpd w/TLS 1.3 support added
Sniffer support for TLS 1.3 and AES CCM
Support small memory footprint build with only TLS 1.3 and PSK without code for (EC)DHE and certificates
New Hardware Acceleration:
Added support for NXP DCP (i.MX RT1060/1062) crypto co-processor
Add Silicon Labs hardware acceleration using [SL SE Manager](https://docs.silabs.com/gecko-platform/latest/service/api/group-sl-se-manager)
New Algorithms:
RC2 ECB/CBC added for use with PKCS#12 bundles
XChaCha and the XChaCha20-Poly1305 AEAD algorithm support added
Misc:
Added support for 802.11Q VLAN frames to sniffer
Added OCSP function wolfSSL_get_ocsp_producedDate
Added API to set CPU ID flags cpuid_select_flags, cpuid_set_flag, cpuid_clear_flag
New DTLS/TLS non-blocking Secure Renegotiation example added to server.c and client.c
Fixes:
Math Library:
Fix mp_to_unsigned_bin_len out of bounds read with buffers longer than maximum MP
Fix for fp_read_radix_16 out of bounds read
Fix to add wrapper for new timing resistant wc_ecc_mulmod_ex2 function version in HW ECC acceleration
Handle an edge case with RSA-PSS encoding message to hash
Compatibility Layer Fixes:
Fix for setting serial number wolfSSL_X509_set_serialNumber
Fix for setting ASN1 time not before / not after with WOLFSSL_X509
Fix for order of components in issuer name when using X509_sign
Fix for compatibility layer API DH_compute_key
EVP fix incorrect block size for GCM and buffer up AAD for encryption/decryption
EVP fix for AES-XTS key length return value and fix for string compare calls
Fix for mutex freeing during RNG failure case with EVP_KEY creation
Non blocking use with compatibility layer BIOs in TLS connections
Build Configuration:
Fix for custom build with WOLFSSL_USER_MALLOC defined
ED448 compiler warning on Intel 32bit systems
CURVE448_SMALL build fix for 32bit systems with Curve448
Fix to build SP math with IAR
CMake fix to only set ranlib arguments for Mac, and for stray typo of , -> ;
Build with --enable-wpas=small fix
Fix for building fips ready using openssl extra
Fixes for building with Microchip (min/max and undef SHA_BLOCK_SIZE)
Fix for NO_FILESYSTEM build on Windows
Fixed SHA256 support for IMX-RT1060
Fix for ECC key gen with NO_TFM_64BIT
Sniffer:
Fixes for sniffer when using static ECC keys. Adds back TLS v1.2 static ECC key fallback detection and fixes new ECC RNG requirement for timing resistance
Fix for sniffer with SNI enabled to properly handle WOLFSSL_SUCCESS error code in ProcessClientHello
Fix for sniffer using HAVE_MAX_FRAGMENT in "certificate" type message
Fix build error with unused "ret" when building with WOLFSSL_SNIFFER_WATCH.
Fix to not treat cert/key not found as error in myWatchCb and WOLFSSL_SNIFFER_WATCH.
Sniffer fixes for handling TCP `out-of-range sequence number`
Fixes SSLv3 use of ECDH in sniffer
PKCS:
PKCS#11 fix to generate ECC key for decrypt/sign or derive
Fix for resetting internal variables when parsing a malformed PKCS#7 bundle with PKCS7_VerifySignedData()
Verify the extracted public key in wc_PKCS7_InitWithCert
Fix for internal buffer size when using decompression with PKCS#7
Misc:
Pin the C# verify callback function to keep from garbage collection
DH fixes for when public key is owned and free’d after a handshake
Fix for TLS 1.3 early data packets
Fix for STM32 issue with some Cube HAL versions and STM32 example timeout
Fix mmCAU and LTC hardware mutex locking to prevent double lock
Fix potential race condition with CRL monitor
Fix for possible malformed encrypted key with 3DES causing negative length
AES-CTR performance fixed with AES-NI
Improvements/Optimizations:
SP and Math:
mp_radix_size adjustment for leading 0
Resolve implicit cast warnings with SP build
Change mp_sqr to return an error if the result won't fit into the fixed length dp
ARM64 assembly with clang improvements, clang doesn't always handle use of x29 (FP or Frame Pointer) in inline assembly code correctly - reworked sp_2048_sqr_8 to not use x29
SP mod exp changed to support exponents of different lengths
TFM div: fix initial value of size in q so clamping doesn't OOB read
Numerous stack depth improvements with --enable-smallstack
Improve cache resistance with Base64 operations
TLS 1.3:
TLS 1.3 wolfSSL_peek want read return addition
TLS 1.3: Fix P-521 algorithm matching
PKCS:
Improvements and refactoring to PKCS#11 key look up
PKCS #11 changes for signing and loading RSA public key from private
check PKCS#7 SignedData private key is valid before using it
check PKCS#7 VerifySignedData content length against total bundle size to avoid large malloc
Compatibility Layer:
EVP add block size for more ciphers in wolfSSL_EVP_CIPHER_block_size()
Return long names instead of short names in wolfSSL_OBJ_obj2txt()
Add additional OpenSSL compatibility functions to update the version of Apache httpd supported
add "CCM8" variants to cipher_names "CCM-8" ciphers, for OpenSSL compat
Builds:
Cortex-M SP ASM support for IAR 6.70
STM Cube pack support (IDE/STM32Cube)
Build option --enable-aesgcm=4bit added for AES-GCM GMULT using 4 bit table
Xilinx IDE updates to allow XTIME override for Xilinx, spelling fixes in Xilinx README.md, and add Xilinx SDK printf support
Added ED448 to the "all" options and ED448 check key null argument sanity check
Added ARC4, 3DES, nullcipher, BLAKE2, BLAKE2s, XChaCha, MD2, and MD4 to the “all” options
Added an --enable-all-crypto option, to enable only the wolfCrypt features of --enable-all, combinable with --enable-cryptonly
Added the ability to selectively remove features from --enable-all and --enable-all-crypto using specific --disable-<feature> options
Use Intel intrinsics with Windows for RDSEED and RDRAND (thanks to dr-m from MariaDB)
Add option to build with WOLFSSL_NO_CLIENT_AUTH
Updated build requirements for wolfSSH use to be less restrictive
lighttpd support update for v1.4.56
Added batch file to copy files to ESP-IDF folders and resolved warnings when using v4.0 ESP-IDF
Added --enable-stacksize=verbose, showing at a glance the stack high water mark for each subtest in testwolfcrypt
ECC:
Performance increase for ECC verify only, using non constant time SP modinv
During ECC verify add validation of r and s before any use
Always use safe add and dbl with ECC
Timing resistant scalar multiplication updated with use of Joye double-add ladder
Update mp_jacobi function to reduce stack and increase performance for base ECC build
Reduce heap memory use with wc_EccPrivateKeyDecode, Improvement to ECC wc_ecc_sig_to_rs and wc_ecc_rs_raw_to_sig to reduce memory use (avoid the mp_int)
Improve StoreECC_DSA_Sig bounds checking
OCSP:
OCSP improvement to handle extensions in singleResponse
support for OCSP request/response for multiple certificates
OCSP Must Staple option added to require OCSP stapling response
Add support for id-pkix-ocsp-nocheck extension
Misc:
Additional code coverage added for ECC and RSA, PKCS#7, 3DES, EVP and Blake2b operations
DTLS MTU: check MTU on write
Refactor hash sig selection and add the macros WOLFSSL_STRONGEST_HASH_SIG (picks the strongest hash) and WOLFSSL_ECDSA_MATCH_HASH (will pick the hash to match the ECC curve)
Strict certificate version allowed from client, TLS 1.2 / 1.3 can not accept client certificates lower than version 3
wolfSSL_get_ciphers_compat(), skip the fake indicator ciphers like the renegotiation indication and the quantum-safe hybrid
When parsing session ticket, check TLS version to see whether they are version compatible
Additional sanity check for invalid ASN1 padding on integer type
Adding in ChaCha20 streaming feature with Mac and Intel assembly build
Sniffer build with --enable-oldtls option on

New in wolfSSL 4.5.0 (Aug 22, 2020)

New Feature Additions:
Added Xilinx Vitis 2019.2 example and README updates
TLS v1.3 is now enabled by default
Building FIPS 140-2 code and test on Solaris
Secure renegotiation with DTLS 1.2
Update RSA calls for hardware acceleration with Xilsecure
Additional OpenSSL compatibility layer functions added
Cypress PSoC6 wolfCrypt driver added
Added STM32CubeIDE support
Added certificate parsing and inspection to C# wrapper layer
TLS v1.3 sniffer support added
TSIP v1.09 for target board GR-ROSE support added
Added support for the "X72N Envision Kit" evaluation board
Support for ECC nonblocking using the configure options "--enable-ecc=nonblock --enable-sp=yes,nonblock CFLAGS=-DWOLFSSL_PUBLIC_MP"
Added wc_curve25519_make_pub function to generate a public key given the private one
Fixes:
PIC32MZ hardware cache and large hashes fix
AES-GCM use with EVP layer in compatibility layer code
Fix for RSA_LOW_MEM with ARM build of SP code
Sanity check on tag length with AES-CCM to conform with RFC 3610
Fixes for 32 and 64 bit software implementations of SP code when WOLFSSL_SP_CACHE_RESISTANT is defined
GCC warning fixes for GCC 9 and later
Sanity check on HKDF expand length to conform with RFC 5869
Fixes for STM32 CubeMX HAL with AES-GCM
Fixed point cache look up table (LUT) implementation fixes
Fix for ARM 32bit SP code when calling div word
Fix for potential out of bounds read when parsing CRLs
Fix for potential out of bounds read with RSA unpadding
AES-CCM optimized counter fix
Updates to Xcode projects for new files and features
Fix for adding CRL’s to a WOLFSSL_X509_STORE structure
FIPSv2 build with opensslall build fixes
Fixes for CryptoCell use with ECC and signature wrappers
Fix for mod calculation with SP code dealing with 3072 bit keys
Fix for handling certificates with multiple OU’s in name
Fix for SP math implementation of sp_add_d and add a sanity check on rshb range
Fix for sanity check on padding with DES3 conversion of PEM to DER
Sanity check for potential out of bounds read with fp_read_radix_16
Additional checking of ECC scalars.
Fixing the FIPS Ready build w.r.t. ecc.c.
When processing certificate names with OpenSSL compatibility layer enabled, unknown name item types were getting handled as having NID 0, and failing. Added a couple more items to what is handled correctly, and ignoring anything that is an unknown type.
Improvements/Optimizations:
TLS 1.3 certificate verify update to handle 8192 bit RSA keys
wpa_supplicant support with reduced code size option
TLS 1.3 alerts encrypted when possible
Many minor coverity fixes added
Error checking when parsing PKCS12 DER
IAR warning in test.c resolved
ATECC608A improvements for use with Harmony 3 and PIC32 MZ
Support for AES-GCM and wc_SignatureVerifyHash with static memory and no malloc’s
Enable SNI by default with JNI/JSSE builds
NetBSD GCC compiler warnings resolved
Additional test cases and code coverage added including curve25519 and curve448 tests
Option for user defined mutexes with WOLFSSL_USER_MUTEX
Sniffer API’s for loading buffer directly
Fixes and improvements from going through the DO-178 process were added
Doxygen updates and fixes for auto documentation generation
Changed the configure option for FIPS Ready builds to be `--enable-fips=ready`.
This release of wolfSSL includes fixes for 6 security vulnerabilities:
wolfSSL version 4.5.0 contains 6 vulnerability fixes: 2 fixes for TLS 1.3, 2 side channel attack mitigations, 1 fix for a potential private key leak in a specific use case, 1 fix for DTLS.
In earlier versions of wolfSSL there exists a potential man in the middle attack on TLS 1.3 clients. Malicious attackers with a privileged network position can impersonate TLS 1.3 servers and bypass authentication. Users that have applications with client side code and have TLS 1.3 turned on, should update to the latest version of wolfSSL. Users that do not have TLS 1.3 turned on, or that are server side only, are NOT affected by this report. Thanks to Gerald Doussot from NCC group for the report.
Denial of service attack on TLS 1.3 servers from repetitively sending ChangeCipherSpecs messages. This denial of service results from the
relatively low effort of sending a ChangeCipherSpecs message versus the effort of the server to process that message. Users with TLS 1.3 servers are
recommended to update to the most recent version of wolfSSL which limits the number of TLS 1.3 ChangeCipherSpecs that can be received in order to avoid
this DoS attack. CVE-2020-12457 was reserved for the report. Thanks to Lenny Wang of Tencent Security Xuanwu LAB.
Potential cache timing attacks on public key operations in builds that are not using SP (single precision). Users that have a system where malicious
agents could execute code on the system, are not using the SP build with wolfSSL, and are doing private key operations on the system (such as signing
with a private key) are recommended to regenerate private keys and update to the most recent version of wolfSSL. CVE-2020-15309 is reserved for this issue. Thanks to Ida Bruhns from Universität zu Lübeck for the report.
When using SGX with EC scalar multiplication the possibility of side-channel attacks are present. To mitigate the risk of side channel attacks wolfSSL’s single precision EC operations should be used instead. Release 4.5.0 turns this on be default now with SGX builds and in previous versions of wolfSSL this can be turned on by using the WOLFSSL_SP macros. Thank you to Alejandro Cabrera Aldaya, Cesar Pereida García and Billy Bob Brumley from the Network and Information Security Group (NISEC) at Tampere University for the report.
Leak of private key in the case that PEM format private keys are bundled in with PEM certificates into a single file. This is due to the
misclassification of certificate type versus private key type when parsing through the PEM file. To be affected, wolfSSL would need to have been built with OPENSSL_EXTRA (--enable-opensslextra). Some build variants such as --enable-all and --enable-opensslall also turn on this code path, checking wolfssl/options.h for OPENSSL_EXTRA will show if the macro was used with the build. If having built with the opensslextra enable option and having placed PEM certificates with PEM private keys in the same file when loading up the certificate file, then we recommend updating wolfSSL for this use case and also recommend regenerating any private keys in the file.
During the handshake, clear application_data messages in epoch 0 are processed and returned to the application. Fixed by dropping received application_data messages in epoch 0. Thank you to Paul Fiterau of Uppsala University and Robert Merget of Ruhr-University Bochum for the report.

New in wolfSSL 4.4.0 (Apr 24, 2020)

New Feature Additions:
Hexagon support.
DSP builds to offload ECC verify operations.
Certificate Manager callback support.
New APIs for running updates to ChaCha20/Poly1305 AEAD.
Support for use with Apache.
Add support for IBM s390x.
PKCS8 support for ED25519.
OpenVPN support.
Add P384 curve support to SP.
Add BIO and EVP API.
Add AES-OFB mode.
Add AES-CFB mode.
Add Curve448, X448, and Ed448.
Add Renesas Synergy S7G2 build and hardware acceleration.
Fixes:
Fix for RSA public encrypt / private sign with RSA key sizes over 2048-bit.
Correct misspellings.
Secure renegotiation fix.
Fix memory leak when using ATECC and non-SECP256R1 curves for sign, verify,
or shared secret.
Fix for K64 MMCAU with `WOLFSSL_SMALL_STACK_CACHE`.
Fix the RSA verify only build.
Fix in SP C implementation for small stack.
Fix using the auth key id extension is set, hash might not be present.
Fix when flattening certificate structure to include the subject alt names.
Fixes for building with ECC sign/verify only.
Fix for ECC and no cache resistance.
Fix memory leak in DSA.
Fix build on minGW.
Fix `PemToDer()` call in `ProcessBuffer()` to set more than ECC.
Fix for using RSA without SHA-512.
Add some close tags to the echoserver HTTP example output.
Miscellaneous fixes and updates for static analysis reports.
Fixes for time structure support.
Fixes for VxWorks support.
Fixes for Async crypto support.
Fix cache resist compile to work with SP C code.
Fixes for Curve25519 x64 asm.
Fix for SP x64 div.
Fix for DTLS edge case where CCS and Finished come out of order and the
retransmit pool gets flushed.
Fix for infinite loop in SHA-1 with small inputs. Thanks to Peter W.
Fix for FIPS Hmac where `wc_HmacInit()` isn't used. `wc_HmacSetKey()` needs
to initialize the Hmac structure. Type is set to NONE, and checked against
NONE, not 0.
Fixes for SP RSA private operations.
Fixes for Xilinx SDK and Zynq UltraScale+ MPSoC
Fix leak when building with HAVE_AESGCM and NO_AES_DECRYPT. Thanks G.G.
Fixes for building ECC without ASN.
Fix for async TLSv1.3 issues.
Fix `wc_KeyPemToDer()` with PKCS1 and empty key.
Omit `-fomit-frame-pointer` from CFLAGS in configure.ac.
Improvements/Optimizations:
Qt 5.12 and 5.13 support.
Added more digest types to Cryptocell RSA sign/verify.
Some memory usage improvements.
Speed improvements for mp_rand.
Improvements to CRL and OCSP support.
Refactor Poly1305 AEAD/MAC to reduce duplicate code.
Add blinding to RSA key gen.
Improvements to blinding.
Improvement and expansion of OpenSSL Compatibility Layer.
Improvements to ChaCha20.
Improvements to X.509 processing.
Improvements to ECC support.
Improvement in detecting 64-bit support.
Refactor to combine duplicate ECC parameter parsing code.
Improve keyFormat to be set by algId and let later key parsing produce fail.
Add test cases for 3072-bit and 4096-bit RSA keys.
Improve signature wrapper and DH test cases.
Improvements to the configure.ac script.
Added constant time RSA q modinv p.
Improve performance of SP Intel 64-bit asm.
Added a few more functions to the ABI list.
Improve TLS bidirectional shutdown behavior.
OpenSSH 8.1 support.
Improve performance of RSA/DH operations on x64.
Add support for PKCS7/CMS Enveloped data with fragmented encrypted content.
Example linker description for FIPS builds to enforce object ordering.
C# wrapper improvements. Added TLS client example and TLSv1.3 methods.
Allow setting MTU in DTLS.
Improve PKCS12 create for outputting encrypted bundles.
Constant time EC map to affine for private operations.
Improve performance of RSA public key ops with TFM.
Smaller table version of AES encrypt/decrypt.
Support IAR with position independent code (ROPI).
Improve speed of AArch64 assembly.
Support AES-CTR with AES-NI.
Support AES-CTR on esp32.
Add a no malloc option for small SP math.

New in wolfSSL 4.3.0 (Jan 12, 2020)

New Feature Additions:
Add --enable-libwebsockets option for support of libwebsockets build
Updated support for NGINX 1.15.0 and added support for 1.16.1
Add wc_scrypt_ex API which can take in iterations rather than cost
Updates to RSA-PSS salt lengths. Macro WOLFSSL_PSS_SALT_LEN_DISCOVER allows for discovering the salt length. Passing RSA_PSS_SALT_LEN_DISCOVER value into wc_RsaPSS_Verify_ex attempts to discover salt length and can use larger salt lengths
Additional OpenSSL compatibility API wolfSSL_CertManagerGetCerts and wolfSSL_X509_STORE_GetCerts for retrieving certificates
Add support for 4096-bit RSA/DH operations to SP (single precision) build
Update support for Google WebRTC to branch m79
Adds new FREESCALE_MQX_5_0 macro for MQX 5.0 support
Adds a CMS/PKCS#7 callback for signing SignedData raw digests enabled with macro HAVE_PKCS7_RSA_RAW_SIGN_CALLBACK and call to function wc_PKCS7_SetRsaSignRawDigestCb
Add --disable-errorqueue feature to disable adding debug nodes to queue with --enable-opensslextra build
After defining WOLFSSL_SHUTDOWNONCE macro the function wolfSSL_shutdown will return a specific error code of SSL_SHUTDOWN_ALREADY_DONE_E, to indicate to the application that the shutdown has already occurred
Add AES-CCM decryption to benchmarking app bundled with wolfSSL
Fixes:
Fixes IAR warnings with IAR-EWARM 7.50.2
Alignment fixes for mmCAU with AES and hashing algorithms
Fix check for plaintext length when using Encrypt-Then-MAC
Fix for unit tests with NGINX and debug mode
Fix for macro names in test cases (WOLFSSL_PUBLIC_MP) and pkcs7.c (HAVE_AESCCM)
Fix for Apache want read case with BIO retry flag
Fix for PKCS7 streaming mode that would error rather than verify bundle
Fix for freeing mutex for X509 and wolfSSL_EVP_PKEY_free, applies to OPENSSL_EXTRA / --enable-opensslextra builds
Fix for encrypt then MAC when re-handshaking, encrypted handshakes change over to ETM now
Fix for curve25519 assembly optimizations with GCC + AVX2
Fix to hang onto certificate for retrieval if using secure renegotiation and session resumption
Fixes case where the heap hint is created before WOLFSSL_CTX, when calling wc_LoadStaticMemory instead of wolfSSL_CTX_load_static_memory
Fix for setting correct return value in PKCS12 parse error case
Reset certificate extension policy count
Fix for memcpy with TLS I/O buffers when using staticmemory pools and loading memory as WOLFMEM_IO_POOL_FIXED
Fixes and updates for STM32 port, including additional mutex protection, AES-GCM decrypt auth tag, AES-CTR mode with CubeMX, update to OpenSTM32 project
Fix for EVP CipherUpdate decrypt and add a test case
DTLS fixes including; some DTLS sequence number issues in general where the sequence was incremented twice for each record and some offset values in the DTLS window checking
Fix sp_add to handle carries properly (--enable-sp-math build)
Additional sanity check on OCSP response decoder
Fix for vasprintf with Solaris and AIX builds
Fix for missing variable declaration with --enable-scep --with-libz build
Fix for certificate date check with async build
Sanity check on “out” length with Base64_Decode added
Decode X.509 name - check input length for jurisdiction
Additional sanity check on variable out index with DecodePolicyOID
Fix for PKCS#12 PBKDF buffer size for buffer overflow
TLS supported curve extension check curve name is in range before checking for disabled
Sanity check for non TLS 1.3 cipher suite with TLS 1.3 connection
Poly1305 AVX2 assembly optimization fix for carry with large input values
Fixes for coverity report including null termination of test case strings and initialization of PKCS7 variables
Fix for API visibility of wc_ed25519_check_key which resolves a wolfcrypt-py install issue
Sanity check on max ALPN length accepted
Additional sanity check when parsing CRL’s for copying the structure, fix for bounds checking
Additional checks on error string length for debug mode and check for null termination
ProcessPeerCerts allocating memory for exts with OPENSSL_EXTRA properly
Clear the top bit when generating a serial number
Sanity check that ASN date characters are valid ASCII characters
Fix to add deterministic ECDSA and fix corner cases for add point.
When getting the DH public key, initialize the P, G, and Pub pointers to NULL, then set that we own the DH parameters flag. This allows FreeSSL to correctly clean up the DH key.
Improvements/Optimizations:
Added configure error report with using invalid build of --enable-opensslextra and --enable-opensslcoexist together
Update PKCS11 for determining key type given the private key type
Update DoVerifyCallback to check verify param hostName and ipasc (--enable-opensslextra builds)
additional null sanity checks on input arguments with QSH and Cryptocell builds
Additional checks on RSA key added to the function wc_CheckRsaKey
Updates for EBSNET support, including fseek, revised macros in settings.h, and realloc support
MISRA-C updates for SP math code
Update to allow compiling for pwdbased/PBKDF2 with having NO_ASN defined
Modify KeyShare and PreSharedKey TLS 1.3 extension linked list advancement to be easier for compilers to handle
Optimization to parsing certificate extension name strings
Adjustment to example server -x runtime behavior when encountering an unrecoverable error case
Remove Blake2b support from HMAC
Adds new hash wrapper init wc_HashInit_ex and Adds new PBKDF2 API wc_PBKDF2_ex for using heap hints for custom memory pools
Adding script to cleanup generated test files, scripts/cleanup_testfiles.sh
Support 20-byte serial numbers and disallow 0
sp_div improved to handle when a has less digits than d (--enable-sp-math build)
When decoding a policy OID and turning it into a human readable string use snprintf()
set the IV length of EVP AES GCM to 96-bits by default
Allow adding CAs for root CA's over the wire that do not have the extended key usage cert_sign set
Added logging messages for SendAlert call and update to send alert after verify certificate callback
updates for synchronous OCTEON support in the Sniffer
Rework BER to DER functions to not be recursive
Updates to find CRL by AuthKeyId
Add a check for subject name hash after matching AKID
Enhancement to mp_invmod/fp_exptmod/sp_exptmod to handle more inputs
Remove requirement for macro NO_SKID when CRL use is enabled
Improvements on XFTELL return code and MAX_WOLFSSL_FILE_SIZE checking
When checking if value is prime return NO in the case of the value 1
Improve Cortex-M RSA/DH assembly code performance
Additional sanity checks on arrays and buffers with OCSP

New in wolfSSL 4.2.0 (Nov 8, 2019)

New Feature Additions:
Over 198 OpenSSL compatibility API’s added
Apache port added for compiling with wolfSSL using –enable-apachehttpd
Port for using wolfSSL with OpenVSwitch
Port for Renesas TSIP added
Visual Studio Solution for Azure Sphere Devices (MT3620 and MT3620-mini) added to the directory IDE/VS-AZURE-SPHERE
Addition of Coldfire MCF5441X NetBurner example to the directory IDE/M68K/
Added support for prime checking to SP math build
Addition of DYNAMIC_TYPE_BIGINT type for tracking mp_int allocations
Addition of wc_ecc_get_curve_params API for getting ecc_set_type params for a curve
Adding in TLS_SHA256_SHA256 and TLS_SHA384_SHA384 TLS1.3 cipher suites (null ciphers)
Added in PKCS7 decryption callbacks for CMS operations
Added handling for optional ECC parameters with PKCS7 KARI
Addition to configure.ac for FIPS wolfRand builds
Adding the flag WOLFSSL_LOAD_FLAG_DATE_ERR_OKAY for ignoring certificate date checks with the functions wolfSSL_CTX_load_verify_buffer_ex and wolfSSL_CTX_load_verify_locations_ex
Support for PKCS8 keys added to the function wolfSSL_CTX_use_PrivateKey_buffer
Support for KECCAK hashing. Build with macro WOLFSSL_HASH_FLAGS and call wc_Sha3_SetFlags(&sha, WC_HASH_SHA3_KECCAK256) before the first SHA3 update
Addition of setting secure renegotiation at CTX level
Addition of KDS (NXP Kinetis Design Studio) example project to directory IDE/KDS/
Support for Encrypt-Then-MAC to TLS 1.2 and below
Added a new build option for a TITAN session cache that can hold just over 2 million session entries (–enable-titancache)
Synchronous Quick Assist Support for Sniffer
Added Support for SiFive HiFive Unleashed board
Support for Google WebRTC added in to compatibility layer build
Additional Sniffer features; IPv6 sniffer support, Fragment chain input, Data store callback, Various statistics tweaks and other Sniffer fixes
Fixes:
Addition of internal content digest checks for PKCS7 SignedData message types that also have signed attributes present. Users could previously check the content digest against the messageDigest attribute, but this adds a default internal check. It’s advised that if users are not doing their own checks that they update wolfSSL version.
A fix for BIO and base64 encoding/decoding
A fix for memory management of CTX / WOLFSSL_METHOD pointer with staticmemory build
A fix for detection of AES-NI support to read bit 25 from ECX
A fix a DTLS handshake message retransmit bug corner case
Additional fixes to coding style and uninitialized values using cppcheck tool
Fixes for failing IAR builds, thanks to Joseph C. for the report
Fixes for ARMv8 Poly1305 inline assembly code to compile with clang 3.5
Fixes for esp-idf build warnings
A fix for XSNPRINTF with mingw32 builds
Fixes for strncpy warnings when compiling with newer versions of GCC
A fix for using IV of all 0’s as default case with AES-NI when no IV passed in
Fixes for types with 16 bit systems, thanks to Ralf Schlatterbeck
Fixes for build with devcrypto/afalg and aesccm, thanks to GitHub user cotequeiroz for the report
Fixes for addressing handling of pathLen constraint when parsing certificate chains
A DTLS fix for alert packet injection at end of handshake
Fixes for Poly1305 AArch64 assembly code
A fix for memory management in error cases when adding a CA, this resolves a coverity report
A fix for SP math for precomputation tables to not include infinity field
Fixes for checks on defines with AVX2 and Poly1305 build
Fixes for CubeMX HAL v1.15 with STM32F7
A fix for TLS 1.3 to always send Key Share extension
A fix for a potential buffer over read in TLS 1.3 DoTls13SupportedVersions, thanks to Artem for the report
Improvements/Optimizations:
Optimization to SP math, changing variables to const where possible. Thanks to Yair Poleg ([email protected]) of Ayyeka for proposing static declaration of global constant variables in SP code
Additional fuzz testing and fixes for TLS 1.3 use, including additional TLS 1.3 alert messages (PR#2440 for more information)
Additional sanity check that ciphersuite from client hello is used in server hello response (check can be removed with the macro WOLFSSL_NO_STRICT_CIPHER_SUITE)
Improved MMCAU performance: SHA-1 by 35%, SHA-256 by 20% and MD5 by 78%
By default, disallow SHA-2 cipher suites from being used in TLS 1.0 and 1.1 handshakes (can be ignored with macro WOLFSSL_OLDTLS_SHA2_CIPHERSUITES)
Optimization of export session buffer size with enable option –enable-sessionexport=nopeer
Spelling fixes in comments and some cast warnings resolved
Updates to abstract atoi to XATOI when used, this allows for better portability when making calls to the system function atoi for converting strings to integers
Improvements to the STSAFE-A100 error code handling, providing better debug information
Adding a sanity check on TLS 1.3 ticket encrypt callback
Specialized implementations of mod exp when base is 2

New in wolfSSL 4.1.0 (Jul 25, 2019)

A fix for the check on return value when verifying PKCS7 bundle signatures, all users with applications using the function wc_PKCS7_VerifySignedData should update
Adding the function wc_PKCS7_GetSignerSID for PKCS7 firmware bundles as a getter function for the signers SID
PKCS7 callback functions for unwrapping of CEK and for decryption
Adding the error value PKCS7_SIGNEEDS_CHECK when no certificates are available in a PKCS7 bundle to verify the signature
TLS 1.3 fixes including if major version is TLS Draft then it is now ignored and if version negotiation occurs but none were matched then an alert is now sent
Addition of the WOLFSSL_PSK_ONE_ID macro for indicating that only one identity in TLS 1.3 PSK is available and will be cached
Adding sanity checks on length of PSK identity from a TLS 1.3 pre-shared key extension
Additional sanity checks and alert messages added for TLS 1.3
Adding XTIME_MS macro to simplify the tls13.c time requirement
Improvements and refactoring of code related to parsing and creating TLS 1.3 client hello packets
TLS 1.3 version renegotiation now happens before interpreting ClientHello message
Chacha20 algorithm optimizations on the ARM architecture for performance increase
Poly1305 algorithm performance enhancements for the ARM architecture using the SIMD NEON extension
Curve25519 and Ed25519 optimized for ARM architecture for performance increase
SHA-512/384 optimizations for performance with ARM architecture using the SIMD NEON extension
Sniffer updates including adding support for the null cipher and static ECDH key exchange and new SSLWatchCb callback
Cipher suite TLS_RSA_WITH_NULL_MD5 for use with the sniffer (off by default)
Sniffer statistic print outs with the macro WOLFSSL_SNIFFER_STATS defined
A fix for wolfSSL_DH_generate_key when WOLFSSL_SMALL_STACK is defined
wolfSSL_BN_Init implementation for opensslextra builds
Updates to the function wolfSSL_i2d_RSAPrivateKey and additional automated tests
Fixes for EVP_CipherFinal edge cases to match behavior desired
Check for appropriate private vs public flag with ECC key decode in wolfSSL_EC_KEY_LoadDer_ex, thanks to Eric Miller for the report
Implementation of the function wolfSSL_PEM_write_DHparams
wolfSSL_RAND_seed is called in wolfSSL_Init now when opensslextra is enabled
CryptoCell-310 support on nRF52840 added
Fixes for atmel_ecc_create_pms to free the used slot.
Fixes for building ATECC with ATCAPRINTF or WOLFSSL_PUBLIC_MP
Cortex-M code changes to support IAR compiler
Improvements to STM32 AES-GCM performance
Fixes for 16-bit systems including PK callbacks, ATECC and LowResTimer function ptoto.
IAR-EWARM compiler warning fix
Clean up of user_settings for CS+ port
Updating Renesas example projects to the latest version
Micrium updates adjusting STATIC macro name and added inline flag
Fixes for building with WOLFSSL_CUSTOM_CURVES on Windows
Updates and refactor to the default build settings with Arduino
Fixes for visibility tags with Cygwin build
STSAFE Improvements to support wolfSSL Crypto Callbacks
Improvements to NetBSD builds and mutex use in test case
Updating TI hardware offload with WOLFSSL_TI_CRYPT build
Maintaining Xilinx FreeRTOS port by adjusting time.h include in wolfSSL
SiFive HiFive E31 RISC?V core family port
Port for Telit IoT AppZone SDK
OCSP Response signed by issuer with identical SKID fix
Fix for sending revoked certificate with OCSP
Honor the status sent over connection with peers and do not perform an internal OCSP lookup
Adding the build flag --enable-ecccustcurves=all to enable all curve types
Support add for Ed25519ctx and Ed25519ph sign/verify algorithms as per RFC 8032
Addition of the macro WOLFSSL_NO_SIGALG to disable signature algorithms extension
wc_AesCtrEncrypt in place addition, where input and output buffer can be the same buffer
Single shot API added for SHA3; wc_Sha3_224Hash, wc_Sha3_256Hash, wc_Sha3_384Hash, wc_Sha3_512Hash
Function additions for JSSE support some of which are wolfSSL_get_ciphers_iana and wolfSSL_X509_verify along with expansion of the –enable-jni option
Macro guards for more modular SHA3 build (i.e. support for 384 size only)
Benchmarking -thread argument support for asynchronous crypto
Blake2s support (–enable-blake2s), which provides 32-bit Blake2 support
Macro SHA256_MANY_REGISTERS addition to potentially speed up SHA256 depending on architecture
Additional TLS alert messages sent with the macro WOLFSSL_EXTRA_ALERTS defined
Feature to fail resumption of a session if the session’s cipher suite is not in the client’s list, this can be overridden by defining the macro NO_RESUME_SUITE_CHECK
Fallback SCSV (Signaling Cipher Suite Value) support on Server only (–enable-fallback-scsv)
DTLS export state only (wolfSSL_dtls_export_state_only) which is a subset of the information exported from previous DTLS export function
Function wc_DhCheckPubValue added to perform simple validity checks on DH keys
Support for RSA SHA-224 signatures with TLS added
Additional option “-print” to the benchmark app for printing out a brief summary after benchmarks are complete
Adding (–disable-pkcs12) option and improvements for disabled sections in pwdbased.c, asn.c, rsa.c, pkcs12.c and wc_encrypt
Added DES3 support to the wolfSSL crypto callbacks
Compile time fixes for build case with SP math and RSA only
Fixes for Coverity static analysis report including explicit initialization of reported stack variables some additional Coverity fixes added thanks to Martin
Fixes for scan build warnings (i.e possible null dereference in ecc.c)
Resetting verify send value with a call to wolfSSL_clear function
Fix for extern with sp_ModExp_2048 when building with –cpp option
Fix for typo issue with –enable-sp=cortexm
Adding #pragma warning disable 4127 for tfm.c when building with Visual Studio
Improvements to the maximum ECC signature calculations
Improvements to TLS write handling in error cases which helps user application not go through with a wolfSSL_write attempt after a wolfSSL_read failure
Fix for read directory functions with Windows (wc_ReadDirFirst and wc_ReadDirNext)
Sanity check on index before accessing domain component buffer in call to wolfSSL_X509_NAME_get_entry
Sending fatal alert from client side on version error
Fix for static RSA cipher suite with PK callback and no loaded private key
Fix for potential memory leak in error case with the function wc_DsaKeyToDer, thanks to Chris H. for the report
Adjusting STRING_USER macro to remove includes of standard lib <string.h> or <stdio.h>
Bug fix for checking wrong allocation assignment in the function wc_PBKDF2 and handling potential leak on allocation failure. This case is only hit when the specific call to malloc fails in the function wc_PBKDF2. Thanks to Robert Altnoeder (Linbit) for the report
Improved length checks when parsing ASN.1 certificates
extern “C” additions to header files that were missing them
Improved checking of return values with TLS extension functions and error codes
Removing redundant calls to the generate function when instantiating and reseeding DRBG
Refactoring and improvements to autoconf code with consolidating AM_CONDITIONAL statements
Improvements for handling error return codes when reading input from transport layer
Improvements to efficiency of SNI extension parsing and error checking with ALPN parsing
Macro WOLFSSL_DEBUG_TLS addition for printing out extension data being parsed during a TLS connection
Adjustment of prime testing with –disable-fastmath builds

New in wolfSSL 4.0.0 (May 15, 2019)

Support for wolfCrypt FIPS v4.0.0, certificate #3389
FIPS Ready Initiative
Compatibility fixes for secure renegotiation with Chrome
Better size check for TLS record fragment reassembly
Improvements to non-blocking and handshake message retry support for DTLS
Improvements to OCSP with ECDSA signers
Added TLS server side secure renegotiation
Added TLS Trusted CA extension
Add support for the Deos Safety Critical RTOS
OCSP fixes for memory management and initializations
Fixes for EVP Cipher decryption padding checks
Removal of null terminators on wolfSSL_X509_print substrings
wolfSSL_sk_ASN1_OBJCET_pop function renamed to wolfSSL_sk_ASN1_OBJECT_pop
Adjustment to include path in compatibility layer for evp.h and objects.h
Fixes for decoding BER encoded PKCS7 contents
TLS handshake now supports using PKCS #11 for private keys
PKCS #11 support of HMAC, AES-CBC and random seeding/generation
Support for named FFDHE parameters in TLS 1.2 (RFC 7919)
Port to Zephyr Project
Move the TLS PRF to wolfCrypt.
Update to CMS KARI support
Added ESP32 WROOM support
Fixes and additions to the OpenSSL compatibility layer
Added WICED Studio Support
MDK CMSIS RTOS v2
Xcode project file update
Fixes for ATECC508A/ATECC608A
Fixes issue with CA path length for self signed root CA's
Fixes for Single Precision (SP) ASM when building sources directly
Fixes for STM32 AES GCM
Fixes for ECC sign with hardware to ensure the input is truncated
Fixes for proper detection of PKCS7 buffer overflow case
Fixes to handle degenerate PKCS 7 with BER encoding
Fixes for TLS v1.3 handling of 6144 and 8192 bit keys
Fixes for possible build issues with SafeRTOS
Added ECC_PUBLICKEY_TYPE to the support PEM header types
Added strict checking of the ECDSA signature DER encoding length
Added ECDSA option to limit sig/algos in client_hello to key size with USE_ECDSA_KEYSZ_HASH_ALGO
Added Cortex-M support for Single Precision (SP) math
Added wolfCrypt RSA non-blocking time support
Added 16-bit compiler support using --enable-16bit option
Improved Arduino sketch example
Improved crypto callback features
Improved TLS benchmark tool
Added new wrapper for snprintf for use with certain Visual Studio builds

New in wolfSSL 3.15.7 (Feb 20, 2019)

New in wolfSSL 3.15.5 (Nov 10, 2018)

Fixes for GCC-8 warnings with strings
Additional compatibility API’s added, including functions like wolfSSL_X509_CA_num and
wolfSSL_PEM_read_X509_CRL
Fixes for OCSP use with NGINX port
Renamed the macro INLINE to WC_INLINE for inline functions
Doxygen updates and formatting for documentation generation
Added support for the STM32L4 with AES/SHA hardware acceleration
Adds checking for critical extension with certificate Auth ID and the macro
WOLFSSL_ALLOW_CRIT_SKID to override the check
Added public key callbacks to ConfirmSignature function to expand public key callback support
Added ECC and Curve25519 key generation callback support
Fix for memory management with wolfSSL_BN_hex2bn function
Added support for dynamic allocation of PKCS7 structure using wc_PKCS7_New and wc_PKCS7_Free
Port to apache mynewt added in the directory wolfssl-3.15.5/IDE/mynewt/*
OCSP stapling in TLS 1.3 additions
Port for ASIO added with --enable-asio configure flag
Contiki port added with macro WOLFSSL_CONTIKI
Memory free optimizations with adding in earlier free’s where possible
Made modifications to the primality testing so that the Miller-Rabin tests check against up to 40
random numbers rather than a fixed list of small primes
Certificate validation time generation updated
Fixes for MQX classic 4.0 with IAR-EWARM
Fix for assembly optimized version of Curve25519
Make SOCKET_PEER_CLOSED_E consistent between read and write cases
Relocate compatibility layer functions for OpenSSH port update
Update to Intel® SGX port, files included by Windows version and macros defined when using
WOLFSSL_SGX
Updates to Nucleus version supported
Stack size reduction with smallstack build
Updates to Rowley-Crossworks settings for CMSIS 4
Added reference STSAFE-A100 public key callbacks for TLS support
Added reference ATECC508A/ATECC608A public key callbacks for TLS support
Updated support for latest CryptoAuthLib (10/25/2018)
Added a wolfSSL static library project for Atollic TrueSTUDIO
Flag to disable AES-CBC and have only AEAD cipher suites with TLS
AF_ALG and cryptodev-linux crypto support added
Update to IO callbacks with use of WOLFSSL_BIO
Additional support for parsing certificate subject OIDs (businessCategory, jurisdiction of
incorporation country, and jurisdiction of incorporation state)
Added wc_ecc_ecport_ex and wc_export_inti API's for ECC hex string exporting
Updates to XCODE build with wolfSSL
Fix for guard on when to include sys/time.h header
Updates and enhancements to the GCC-ARM example
Fix for PKCS8 padding with encryption
Updates for wolfcrypt JNI wrapper
ALT_ECC_SIZE use with SP math
PIC32MZ hardware acceleration buffer alignment fixes
Renesas e2studio project files added
Renesas RX example project added
Fix for DH algorithm when using SP math with ARM assembly
Fixes and enhancements for NXP K82 support
Benchmark enhancements to print in CSV format and in Japanese
Support for PKCS#11 added with --enable-pkcs11
Fixes for asynchronous crypto use with TLS 1.3
TLS 1.3 only build, allows for disabling TLS 1.2 and earlier protocols
Fix for GCC warnings in function wolfSSL_ASN1_TIME_adj
Added --enable-asn=nocrypt for certificate only parsing support
Added support for parsing PIV format certificates with the function wc_ParseCertPIV and macro
WOLFSSL_CERT_PIV
Added APIs to support GZIP
Updates to support Lighttpd
Version resource added for Windows DLL builds
Increased code coverage with additional testing
Added support for constructed OCTET_STRING with PKCS#7 signed data
Added DTLS either (server/client) side initialization setting
Minor fixes for building with MINGW32 compiler
Added support for generic ECC PEM header/footer with PKCS8 parsing
Added Japanese output to example server and client with “-1 1” flag
Added USE_ECDSA_KEYSZ_HASH_ALGO macro for building to use digest sizes that match ephemeral key
size
Expand PKCS#7 CMS support with KEKRI, PWRI and ORI
Streaming capability for PKCS#7 decoding and sign verify added

New in wolfSSL 3.15.3 (Jun 23, 2018)

New in wolfSSL 3.15.0 (Jun 6, 2018)

Release 3.15.0 of wolfSSL embedded TLS has bug fixes and new features including:
Support for TLS 1.3 Draft versions 23, 26 and 28.
Add FIPS SGX support!
Single Precision assembly code added for ARM and 64-bit ARM to enhance performance.
Improved performance for Single Precision maths on 32-bit.
Improved downgrade support for the TLS 1.3 handshake.
Improved TLS 1.3 support from interoperability testing.
Added option to allow TLS 1.2 to be compiled out to reduce size and enhance security.
Added option to support Ed25519 in TLS 1.2 and 1.3.
Update wolfSSL_HMAC_Final() so the length parameter is optional.
Various fixes for Coverity static analysis reports.
Add define to use internal struct timeval (USE_WOLF_TIMEVAL_T).
Switch LowResTimer() to call XTIME instead of time(0) for better portability.
Expanded OpenSSL compatibility layer with a bevy of new functions.
Added Renesas CS+ project files.
Align DH support with NIST SP 800-56A, add wc_DhSetKey_ex() for q parameter.
Add build option for CAVP self test build (–enable-selftest).
Expose mp_toradix() when WOLFSSL_PUBLIC_MP is defined.
Example certificate expiration dates and generation script updated.
Additional optimizations to trim out unused strings depending on build options.
Fix for DN tag strings to have “=” when returning the string value to users.
Fix for wolfSSL_ERR_get_error_line_data return value if no more errors are in the queue.
Fix for AES-CBC IV value with PIC32 hardware acceleration.
Fix for wolfSSL_X509_print with ECC certificates.
Fix for strict checking on URI absolute vs relative path.
Added crypto device framework to handle PK RSA/ECC operations using callbacks, which adds new build option `./configure –enable-cryptodev` or `WOLF_CRYPTO_DEV`.
Added devId support to ECC and PKCS7 for hardware based private key.
Fixes in PKCS7 for handling possible memory leak in some error cases.
Added test for invalid cert common name when set with `wolfSSL_check_domain_name`.
Refactor of the cipher suite names to use single array, which contains internal name, IANA name and cipher suite bytes.
Added new function `wolfSSL_get_cipher_name_from_suite` for getting IANA cipher suite name using bytes.
Fixes for fsanitize reports.
Fix for openssl compatibility function `wolfSSL_RSA_verify` to check returned size.
Fixes and improvements for FreeRTOS AWS.
Fixes for building openssl compatibility with FreeRTOS.
Fix and new test for handling match on domain name that may have a null terminator inside.
Cleanup of the socket close code used for examples, CRL/OCSP and BIO to use single macro `CloseSocket`.
Refactor of the TLSX code to support returning error codes.
Added new signature wrapper functions `wc_SignatureVerifyHash` and `wc_SignatureGenerateHash` to allow direct use of hash.
Improvement to GCC-ARM IDE example.
Enhancements and cleanups for the ASN date/time code including new API’s `wc_GetDateInfo`, `wc_GetCertDates` and `wc_GetDateAsCalendarTime`.
Fixes to resolve issues with C99 compliance. Added build option `WOLF_C99` to force C99.
Added a new `–enable-opensslall` option to enable all openssl compatibility features.
Added new `–enable-webclient` option for enabling a few HTTP API’s.
Added new `wc_OidGetHash` API for getting the hash type from a hash OID.
Moved `wolfSSL_CertPemToDer`, `wolfSSL_KeyPemToDer`, `wolfSSL_PubKeyPemToDer` to asn.c and renamed to `wc_`. Added backwards compatibility macro for old function names.
Added new `WC_MAX_SYM_KEY_SIZE` macro for helping determine max key size.
Added `–enable-enckeys` or (`WOLFSSL_ENCRYPTED_KEYS`) to enable support for encrypted PEM private keys using password callback without having to use opensslextra.
Added ForceZero on the password buffer after done using it.
Refactor unique hash types to use same internal values (ex WC_MD5 == WC_HASH_TYPE_MD5).
Refactor the Sha3 types to use `wc_` naming, while retaining old names for compatibility.
Improvements to `wc_PBKDF1` to support more hash types and the non-standard extra data option.
Fix TLS 1.3 with ECC disabled and CURVE25519 enabled.
Added new define `NO_DEV_URANDOM` to disable the use of `/dev/urandom`.
Added `WC_RNG_BLOCKING` to indicate block w/sleep(0) is okay.
Fix for `HAVE_EXT_CACHE` callbacks not being available without `OPENSSL_EXTRA` defined.
Fix for ECC max bits `MAX_ECC_BITS` not always calculating correctly due to macro order.
Added support for building and using PKCS7 without RSA (assuming ECC is enabled).
Fixes and additions for Cavium Nitrox V to support ECC, AES-GCM and HMAC (SHA-224 and SHA3).Enabled ECC, AES-GCM and SHA-512/384 by default in (Linux and Windows)
Added `./configure –enable-base16` and `WOLFSSL_BASE16` configuration option to enable Base16 API’s.
Improvements to ATECC508A support for building without `WOLFSSL_ATMEL` defined.
Refactor IO callback function names to use `_CTX_` to eliminate confusion about the first parameter.
Added support for not loading a private key for server or client when `HAVE_PK_CALLBACK` is defined and the private PK callback is set.
Added new ECC API `wc_ecc_sig_size_calc` to return max signature size for a key size.
Cleanup ECC point import/export code and added new API `wc_ecc_import_unsigned`.
Fixes for handling OCSP with non-blocking.
Added new PK (Primary Key) callbacks for the VerifyRsaSign. The new callbacks API’s are `wolfSSL_CTX_SetRsaVerifySignCb` and `wolfSSL_CTX_SetRsaPssVerifySignCb`.
Added new ECC API `wc_ecc_rs_raw_to_sig` to take raw unsigned R and S and encodes them into ECDSA signature format.
Added support for `WOLFSSL_STM32F1`.
Cleanup of the ASN X509 header/footer and XSTRNCPY logic.
Add copyright notice to autoconf files. (Thanks Brian Aker!)
Updated the M4 files for autotools. (Thanks Brian Aker!)
Add support for the cipher suite TLS_DH_anon_WITH_AES256_GCM_SHA384 with test cases. (Thanks Thivya Ashok!)
Add the TLS alert message unknown_psk_identity (115) from RFC 4279, section 2. (Thanks Thivya Ashok!)
Fix the case when using TCP with timeouts with TLS. wolfSSL shall be agnostic to network socket behavior for TLS. (DTLS is another matter.) The functions `wolfSSL_set_using_nonblock()` and `wolfSSL_get_using_nonblock()` are deprecated.
Hush the AR warning when building the static library with autotools.
Hush the “-pthread” warning when building in some environments.
Added a dist-hook target to the Makefile to reset the default options.h file.
Removed the need for the darwin-clang.m4 file with the updates provided by Brian A.
Renamed the AES assembly file so GCC on the Mac will build it using the preprocessor.
Add a disable option (–disable-optflags) to turn off the default optimization flags so user may supply their own custom flags.
Correctly touch the dummy fips.h header.

New in wolfSSL 3.14.0 (Apr 25, 2018)

New in wolfSSL 3.13.0 (Dec 28, 2017)

New in wolfSSL 3.12.2 (Nov 13, 2017)

Release 3.12.2 of wolfSSL has bug fixes and new features including:
This release includes many performance improvements with Intel ASM (AVX/AVX2) and AES-NI. New single precision math option to speedup RSA, DH and ECC. Embedded hardware support has been expanded for STM32, PIC32MZ and ATECC508A. AES now supports XTS mode for disk encryption. Certificate improvements for setting serial number, key usage and extended key usage. Refactor of SSL_ and hash types to allow openssl coexistence. Improvements for TLS 1.3. Fixes for OCSP stapling to allow disable and WOLFSSL specific user context for callbacks. Fixes for openssl and MySQL compatibility. Updated Micrium port. Fixes for asynchronous modes.
Added TLS extension for Supported Point Formats (ec_point_formats)
Fix to not send OCSP stapling extensions in client_hello when not enabled
Added new API’s for disabling OCSP stapling
Add check for SIZEOF_LONG with sun and LP64
Fixes for various TLS 1.3 disable options (RSA, ECC and ED/Curve 25519).
Fix to disallow upgrading to TLS v1.3
Fixes for wolfSSL_EVP_CipherFinal() when message size is a round multiple of a block size.
Add HMAC benchmark and expanded AES key size benchmarks
Added simple GCC ARM Makefile example
Add tests for 3072-bit RSA and DH.
Fixed DRAFT_18 define and fixed downgrading with TLS v1.3
Fixes to allow custom serial number during certificate generation
Add method to get WOLFSSL_CTX certificate manager
Improvement to `wolfSSL_SetOCSP_Cb` to allow context per WOLFSSL object
Alternate certificate chain support `WOLFSSL_ALT_CERT_CHAINS`. Enables checking cert against multiple CA’s.
Added new `–disable-oldnames` option to allow for using openssl along-side wolfssl headers (without OPENSSL_EXTRA).
Refactor SSL_ and hashing types to use wolf specific prefix (WOLFSSL and WC_) to allow openssl coexistence.
Fixes for HAVE_INTEL_MULX
Cleanup include paths for MySQL cmake build
Added configure option for building library for wolfSSH (–enable-wolfssh)
Openssl compatibility layer improvements
Expanded API unit tests
Fixes for STM32 crypto hardware acceleration
Added AES XTS mode (–enable-xts)
Added ASN Extended Key Usage Support (see wc_SetExtKeyUsage).
Math updates and added TFM_MIPS speedup.
Fix for creation of the KeyUsage BitString
Fix for 8k keys with MySQL compatibility
Fixes for ATECC508A.
Fixes for PIC32MZ hashing.
Fixes and improvements to asynchronous modes for Intel QuickAssist and Cavium Nitrox V.
Update HASH_DRBG Reseed mechanism and add test case
Rename the file io.h/io.c to wolfio.h/wolfio.c
Cleanup the wolfIO_Send function.
OpenSSL Compatibility Additions and Fixes
Improvements to Visual Studio DLL project/solution.
Added function to generate public ECC key from private key
Added async blocking support for sniffer tool.
Added wolfCrypt hash tests for empty string and large data.
Added ability to use of wolf implementation of `strtok` using `USE_WOLF_STRTOK`.
Updated Micrium uC/OS-III Port
Updated root certs for OCSP scripts
New Single Precision math option for RSA, DH and ECC (off by default). See `–enable-sp`.
Speedups for AES GCM with AESNI (–enable-aesni)
Speedups for SHA2, ChaCha20/Poly1035 using AVX/AVX2

New in wolfSSL 3.12.0 (Nov 13, 2017)

Release 3.12.0 of wolfSSL has bug fixes and new features including:
TLS 1.3 with Nginx! TLS 1.3 with ARMv8! TLS 1.3 with Async Crypto! (–enable-tls13)
TLS 1.3 0RTT feature added
Added port for using Intel SGX with Linux
Update and fix PIC32MZ port
Additional unit testing for MD5, SHA, SHA224, SHA256, SHA384, SHA512, RipeMd, HMAC, 3DES, IDEA, ChaCha20, ChaCha20Poly1305 AEAD, Camellia, Rabbit, ARC4, AES, RSA, Hc128
AVX and AVX2 assembly for improved ChaCha20 performance
Intel QAT fixes for when using –disable-fastmath
Update how DTLS handles decryption and MAC failures
Update DTLS session export version number for –enable-sessionexport feature
Add additional input argument sanity checks to ARMv8 assembly port
Fix for making PKCS12 dynamic types match
Fixes for potential memory leaks when using –enable-fast-rsa
Fix for when using custom ECC curves and add BRAINPOOLP256R1 test
Update TI-RTOS port for dependency on new wolfSSL source files
DTLS multicast feature added, –enable-mcast
Fix for Async crypto with GCC 7.1 and HMAC when not using Intel QuickAssist
Improvements and enhancements to Intel QuickAssist support
Added Xilinx port
Added SHA3 Keccak feature, –enable-sha3
Expand wolfSSL Python wrapper to now include a client side implementation
Adjust example servers to not treat a peer closed error as a hard error
Added more sanity checks to fp_read_unsigned_bin function
Add SHA224 and AES key wrap to ARMv8 port
Update MQX classics and mmCAU ports
Fix for potential buffer over read with wolfSSL_CertPemToDer
Add PKCS7/CMS decode support for KARI with IssuerAndSerialNumber
Fix ThreadX/NetX warning
Fixes for OCSP and CRL non blocking sockets and for incomplete cert chain with OCSP
Added RSA PSS sign and verify
Fix for STM32F4 AES-GCM
Added enable all feature (–enable-all)
Added trackmemory feature (–enable-trackmemory)
Fixes for AES key wrap and PKCS7 on Windows VS
Added benchmark block size argument
Support use of staticmemory with PKCS7
Fix for Blake2b build with GCC 5.4
Fixes for compiling wolfSSL with GCC version 7, most dealing with switch statement fall through warnings.
Added warning when compiling without hardened math operations

New in wolfSSL 3.4.0 (Mar 9, 2015)

New in wolfSSL 3.3.0 (Dec 6, 2014)

New in wolfSSL 3.2.0 (Dec 6, 2014)

New in wolfSSL 3.1.0 (Jul 16, 2014)

New in wolfSSL 3.0.0 (Jul 16, 2014)

New in wolfSSL 2.9.4 (Jul 16, 2014)

New in wolfSSL 2.9.0 (Jul 16, 2014)

New in wolfSSL 2.8.0 (Oct 4, 2013)

New in wolfSSL 2.7.0 (Oct 4, 2013)

New in wolfSSL 2.6.0 (Oct 4, 2013)

DTLS 1.2 support including AEAD ciphers
SHA-3 finalist Blake2 support, it's fast and uses little resources
SHA-384 cipher suites including ECC ones
HMAC now supports SHA-512
Track memory use for example client/server with -t option
Better IPv6 examples with --enable-ipv6, before if ipv6 examples/tests were turned on, localhost only was used. Now link-local (with scope ids) and ipv6 hosts can be used as well.
Xcode v4.6 project for iOS v6.1 update
settings.h is now checked in all *.c files for true one file setting detection
Better alignment at SSL layer for hardware crypto alignment needs (Note, SSL itself isn't friendly to alignment with 5 byte TLS headers and 13 bytes DTLS headers, but every effort is now made to align with the CYASSL_GENERAL_ALIGNMENT flag which sets desired alignment requirement)
NO_64BIT flag to turn off 64bit data type accumulators in public key code (Note, some systems are faster with 32bit accumulators)
--enable-stacksize for example client/server stack use (Note, modern desktop Operating Systems may add bytes to each stack frame)
Updated compression/decompression with direct crypto access
All ./configure options are now lowercase only for consistency
./configure builds default to fastmath option:
Note, if on ia32 and building in shared mode this may produce a problem with a missing register being available because of PIC, there are at least 5 solutions to this
--disable-fastmath , don't use fastmath
--disable-shared, don't build a shared library
C_EXTRA_FLAGS=-DTFM_NO_ASM , turn off assembly use
use clang, it just seems to work
play around with no PIC options to force all registers being open
Many new ./configure switches for option enable/disable for example:
rsa
dsa
md5
sha
arc4
null (allow NULL ciphers)
oldtls (only use TLS 1.2)
asn (no certs or public keys allowed)
./configure generates cyassl/options.h which allows a header the user can include in their app to make sure the same options are set at the app and CyaSSL level.
autoconf no longer needs serial-tests which lowers version requirements of automake to 1.11 and autoconf to 2.63

wolfSSL Changelog

What's new in wolfSSL 5.7.0

New in wolfSSL 5.6.4 (Oct 31, 2023)

New in wolfSSL 5.6.3 (Sep 15, 2023)

New in wolfSSL 5.6.2 (Jun 21, 2023)

New in wolfSSL 5.6.0 (Apr 3, 2023)

New in wolfSSL 5.5.4 (Feb 22, 2023)

New in wolfSSL 5.5.3 (Nov 4, 2022)

New in wolfSSL 5.2.0 (Feb 22, 2022)

New in wolfSSL 5.1.1 (Jan 4, 2022)

New in wolfSSL 5.1.0 (Dec 28, 2021)

New in wolfSSL 5.0.0 (Nov 1, 2021)

New in wolfSSL 4.8.1 (Jul 17, 2021)

New in wolfSSL 4.8.0 (Jul 14, 2021)

New in wolfSSL 4.7.0 (Feb 22, 2021)

New in wolfSSL 4.6.0 (Dec 25, 2020)

New in wolfSSL 4.5.0 (Aug 22, 2020)

New in wolfSSL 4.4.0 (Apr 24, 2020)

New in wolfSSL 4.3.0 (Jan 12, 2020)

New in wolfSSL 4.2.0 (Nov 8, 2019)

New in wolfSSL 4.1.0 (Jul 25, 2019)

New in wolfSSL 4.0.0 (May 15, 2019)

New in wolfSSL 3.15.7 (Feb 20, 2019)

New in wolfSSL 3.15.5 (Nov 10, 2018)

New in wolfSSL 3.15.3 (Jun 23, 2018)

New in wolfSSL 3.15.0 (Jun 6, 2018)

New in wolfSSL 3.14.0 (Apr 25, 2018)

New in wolfSSL 3.13.0 (Dec 28, 2017)

New in wolfSSL 3.12.2 (Nov 13, 2017)

New in wolfSSL 3.12.0 (Nov 13, 2017)

New in wolfSSL 3.4.0 (Mar 9, 2015)

New in wolfSSL 3.3.0 (Dec 6, 2014)

New in wolfSSL 3.2.0 (Dec 6, 2014)

New in wolfSSL 3.1.0 (Jul 16, 2014)

New in wolfSSL 3.0.0 (Jul 16, 2014)

New in wolfSSL 2.9.4 (Jul 16, 2014)

New in wolfSSL 2.9.0 (Jul 16, 2014)

New in wolfSSL 2.8.0 (Oct 4, 2013)

New in wolfSSL 2.7.0 (Oct 4, 2013)

New in wolfSSL 2.6.0 (Oct 4, 2013)

New in wolfSSL 2.5.0 (Feb 14, 2013)

New in wolfSSL 2.4.6 (Jan 3, 2013)