Sie's HTTP/SIP MD5 Calculator

Sie's HTTP/SIP MD5 Calculator is a compact tool that allows you to learn more details about the MD5 authentication calculation. The calculator was developed to help the programmers that need to check their code in order to find the problems with the code.

There is no need to install the application. In other words, it launches as soon as you double-click on the downloaded executable file.

The application allows you to enter the HTTP message details and to view the MD5 response. There are various fields you must fill in to get the response, namely the usernmae, the password, the realm, the method (by default, this field targets GET requests), as well as the digest URI. A few additional parameters enable you to set the qop method and its configuration. The output MD5 response is displayed in a non-editable field.

The detailed view also displays the calculation steps in order to check the response piece by piece. In other words, you get to see the MD5 hash for the input data (username, realm, password) called HA1, and the MD5 hash for the method and the digest URI (HA2). The response is generated based on HA1 and HA2, together with additional qop parameters.