An ethernet bridge / VPN program for windows

RSA实现数字签名算法 VC++实现，有图形化窗口-Digital Signature Algorithm to RSA

软件模拟CRC冗余校验，可以对任意长度的发送序列求16位校验和，并且可以对接收序列进行检查。有详细的中文注释，和模拟函数-simulation software CRC Redundancy Check, for any length of this sequence for 16 checksum, and to be able to receive sequence for the examination. The Chinese have detailed notes and simulation function

运用 OpenSSL 实现对文件加密-The use of OpenSSL to achieve file encryption

IBM的MARS加密算法-IBMMARS

Des加密的实现-Des achieve encryption

ceaser转换文本加密技术-converting text encryption technology

文件加密，可以对任意文件进行加密-file encryption, to arbitrary files can be encrypted

MD5计算,可以将文件提取出摘要，进行比对，校验，实现指纹算法-MD5, can be extracted document summaries, compare and testing to achieve fingerprint algorithm

大数计算在公钥加密中起到了重要的作用，如何操作大数呢，该程序也许能帮你解决这个问题有所帮助。-calculated in the end, the public key encryption plays an important role in the operation of large numbers do, the program may be able to help you resolve this problem some help.

DES算法实现过程分析-DES algorithm analysis