编码，译码，破译Vigenere密码.转帖-to encrypt and decrypt Vigenere Cipher,and how to break it.

古典密码课设。C++ 多表古典加密方法主要有Playfair体制、Vigenere体制、Beaufor体制、Vernam体制和Hill体制，用高级语言实现其中一种体制的加密和解密算法。 -Classical cryptography class-based. C++ multi-table classical encryption methods Playfair system, Vigenere system, Beaufor system, Vernam system and Hill

Ciphers are used to produce messages which can be understood only by the sender and authorized receivers, so ciphers can be used for secret correspondence in situations where the message may fall into the wrong hands. The process of converting a

可以直接运行的加密解密程序，输入字母，忽略大小写(Can be directly run encryption and decryption program, enter letters, ignore the case)