一个使用c++编写的Vigenere加解密系统和唯密文破译系统。其中项目名为Vigenere的为加解密系统，为Vigenere_1的为唯密文破解，并附有实验报告。-A Vigenere encryption and decryption system and a ciphertext deciphering system written in C++. One of the projects named Vigenere for the encryption and decryption sys