Vigenere密码单表代换加密如明文为:wearediscoveredsaveyourself 密钥流为:ddeferfrfdwfefeggasdwfeffrg 密文流为:asfhjkhfkjerhfkjbjkfbdjkfgjk 即Ci=(Ki+Pi) 26 pi=(Ci-Ki) 26 要求实现加密和解密,C或C++描述源程序。 -Vigenere encrypted password alone, such as clear as the table Substitution