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Cryptography Tools is a project to develop demonstration tools on classic (currently Caesar and Playfair) & modern crypto-systems, including private & public key encryptions, digital signatures, cryptographic hashes and authenticated encryption.
A simple demonstrative command line tool which can do both file encryption and decryption . It is based on OpenSSL and can support AES / DES / 3DES / BLOWFISH / RC4 cipher algorithms with ECB / CBC / CFB / OFB chaining modes (ECB only for RC4).
The Cryptographic Implementations Analysis Toolkit (CIAT) is compendium of command line and graphical tools whose aim is to help in the detection and analysis of encrypted byte sequences within files (executable and non-executable).