古典密码学若干算法 (1) 实现移位密码； (2) 实现替换密码； (3) 实现Vigenere密码(选做)； (4) 实现置换密码(换位密码)； (5) 对每一种密码，编写加密字符串和加密文件的两种算法并进行实验。 -A number of classical cryptography algorithm (1) the realization of shift cipher (2) to achieve the replacement of the password

this program implements Substitution and Transposition cipher

使用vc编写的简单的实现凯撒密码代码。语法是，将输入的明文根据其ascll码加上输入的密钥之后换位为相应ascll的密文。-Using vc to write the simple implementation of Caesar cipher code. According to its syntax is that the input plaintext ascll code plus the input key after transposition for the correspondi

移位密码的加密以及攻击方法，Ｃ＋＋文件，密码学初步-Encryption and password attack methods shifts, C++ files, cryptography preliminary