Best opensource cryptography tools

• Cryptool1

          CrypTool 1 (CT1) is an open-source Windows program for cryptography and

          cryptanalysis. It’s the most wide-spreaded e-learning software of its kind.


          - Numerous classic and modern cryptographic algorithms (encryption and
            decryption, key generation, secure passwords, authentication, secure protocols,
            etc.)

          - Visualization of several algorithms (Caesar, Enigma, RSA, Diffie-Hellman, digital
             signatures, AES, etc.)

          - Cryptanalysis of several algorithms (Vigenère, RSA, AES, etc.)

          - Cryptanalytical measurement methods (entropy, n-grams, autocorrelation, etc.)

          - Related auxiliary methods (primality tests, factorization, base64 encoding, etc.)

          - Number theory tutorial, Comprehensive online help

• Cryptool2

          CrypTool 2 (CT2) is an open-source program offering an innovative visual
          programming GUI to experiment with cryptographic procedures and to animate
          their cascades.

          - Modern Plug’n’Play Interface / Visual Programming

          - Visualization of Algorithms

          - Comprehensive Cryptanalysis Functions, Integrated Online Help

• Jcryptool

          JCrypTool (JCT) is an open-source e-learning platform, allowing to experiment
          comprehensively with cryptography on MAC OS, Windows and Linux.

          - JCrypTool enables students, teachers, developers, and anyone else interested in
            cryptography to apply and analyze cryptographic algorithms in a modern, easy-
            to-use application. The JCT plaform creates a new way of e-learning by not just
            encouraging users to learn about cryptography and apply the algorithms
            themselves, but also to develop their own cryptographic plug-ins and extend the
            JCrypTool platform in new directions.