virginia密码加密解密，随机产生密钥进行加密。并分别统计了明文和密文中字幕出现的频率，分别对明文和密文进行了重合指数的计算。 运行时，需要把装有明文的in.txt放在程序的同一目录下，并且明文不支持符号，数字，只支持字母-virginia password encryption and decryption, randomly generated keys for encryption. And, respectively, the statistics clearly and sub

现代密码学中古典密码仿射变换,将原始仿射变换中只有26个字幕的置换表扩展为ASICII中85个可打印字符,可用于账号密码等的加密.-Affine transformation of modern cryptography, classical cryptography, the original affine transformation, only 26 subtitles replacement table extension 85 in ASICII printable character

现代密码学中古典密码仿射变换,将原始仿射变换中只有26个字幕的置换表扩展为ASICII中85个可打印字符,可用于账号密码等的加密.-Affine transformation of modern cryptography, classical cryptography, the original affine transformation, only 26 subtitles replacement table extension 85 in ASICII printable character