Vigenere编码的加密和解密过程，希望能对某些learner有点帮助。-Vigenere code encryption and decryption process, in hopes of some learner helpful.

The Vigenère cipher is a method of encrypting alphabetic text by using a series of different Caesar ciphers based on the letters of a keyword. It is a simple form of polyalphabetic substitution.

Vigenere Encryption example in Borland Delphi.