Substitution Cipher

There are many dedicated tools on the market that come packed with high security encryption levels for helping you keep your documents private from unauthorized viewing, and they manage to carry out such a task by setting up passwords.

This is not the case with Substitution Cipher, an application that offers users a different approach when it comes to encrypting or decrypting documents, as it relies on mono-alphabetic substitution.

Aesthetically, it’s not very impressive, as it packs a minimalist window which is divided into two panes, with the first one dealing with the encryption process, while the second provides decryption options.

It is not possible to drag and drop the items directly into the main window of the application, so you have to use the built-in browse button. As a major drawback, Substitution Cipher can work only with a single file format, namely plain text.

You can also enter text by typing in the message in the dedicated dialogs, and before proceeding with the encryption or decryption procedure, you are required to define the cypher alphabet. You have to give a substitute for each of the twenty six letters, with no spaces or non-alphabetic characters.

The plain text and ciphered data can be either printed or exported to plain text file format. During our testing we have noticed that the program manages to remain light on the system resources while accomplishing a task.

All things considered, Substitution Cipher offers a simple software solution when it comes to encrypting or decrypting documents easily and with minimum effort. It cannot be considered the most powerful tool on the market, as it lacks many advanced features, such as support for a wider range of file formats (DOC, RTF) and drag and drop.