这个是RSA密钥对生成器，使用RSA EURO

密码学的数字签名算法 来自国外教材-Cryptography Digital Signature Algorithm materials from abroad

VC知识库文章 - C-S模式考试程序制作详解-VC-C-S model produced Elaborates on examination procedures

vc++ md5类工程，有完整的VC源码，可成功编译-vc++ md5-type project, the VC has a complete source code can be compiled successfully

RC2算法源代码-RC2 algorithm source code

base64的解码Ｃ语言实现-base64 decoding C Language

Universal Asynchronous Receiver

在PB中通过读取硬盘序列号实现软件加密-in PB by reading drive serial number encryption software

MD5算法的实现。MD5以512位分组来处理输入的信息，且每一分组又被划分为16个32位子分组，经过了一系列的处理后，算法的输出由四个32位分组组成，将这四个32位分组级联后将生成一个128位散列值。 -MD5 algorithm. MD5 to 512 groups to deal with the importation of information and each group was also divided into 16 groups of 32 seats, After a series of processing, the output from the algorithm 4 32 subgroups, 4 32 this group will generate a cascade 128 hash value.

This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.-This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

凯撒加密，用java实现 非扩展算法，C=M*K，有加密和解密两步-Caesar encryption, using java to achieve non-expansion algorithm, C = M* K, have a two-step encryption and decryption