Base64编码/解码器

CRC校验中叠加和校验方法的生成，校验等功能函数源码。-CRC verification and validation methods of superposition generation, calibration source, such as performance function.

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

高级加密标准AES优胜算法Rijndael c语言源代码。-Advanced Encryption Standard algorithm Rijndael winning c language source code.

RC4加密算法源码-RC4 encryption algorithm source code

tutorial on how to create your own yahoo messenger client

A simple cpp program, that receives a file, does a bit-wise "not" for every character, and adds "not" to the extension. Repeated running does the same and removes the "not" from extension. This a "pseudo-encryption", but very useful to avoid automated filtering software. This way it is possible to send "exe" files (or anything else) without the emails being blocked... First - send the source code, have your (enlightened) recipient compile it, then send the "notted" file. The code is not very efficient though, I only had 30 minutes to invest... :)-A simple cpp program, that receives a file, does a bit-wise "not" for every character, and adds "not" to the extension. Repeated running does the same and removes the "not" from extension. This is a "pseudo-encryption", but very useful to avoid automated filtering software. This way it is possible to send "exe" files (or anything else) without the emails being blocked... First - send the source code, have your (enlightened) recipient co

这是jacobi迭代算法-iterative algorithm to caculate Jacobi(matrix?)

密码学中的Miller Rabin素性检测算法。人工编写，用这个来学习或者是交作业，绝对是过关利器。-Cryptography Miller Rabin primality testing algorithm. Artificial preparation, use this to learn or交作业is definitely a sharp object boundary.

单位基数64；

一个DES加密的实现-a realization of the DES encryption