Here are the Encyption and Decryption programs to various types of ciphers in C++.
Cipher : A cipher is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure. An alternative, less common term is encipherment.
Encryption : A message is plaintext (sometimes called cleartext). The process of disguising a message in such away as to hide its substance is encryption.
Decryption : An encrypted message is ciphertext. The process ofturning ciphertext back into plaintext is decryption.