A string representation of a series of hex values may not be printable, and may not even convert neatly to an encoding such a utf-8. In many cases, this is not an issue as the string is a binary ...

Use python to implement common classic algorithms in cryptography, such as Vigenere, 3DES, RSA, ElGamal, Diffie-Hellman, RSA signature, ElGamal signature, HMAC, hash algorithm, column shift, AES, etc.