It s about algorithm for caesar encode

DES加密C代码带执行程序-DES encryption with C code enforcement procedures

测试对字符串的MD4。运行环境：vs2008 （注意选择“多字符”编译）-Testing of the string MD4. Operating environment: vs2008 (attention to the selection " multi-character" compilation)

An ethernet bridge / VPN program for windows-An ethernet bridge/VPN program for windows

VC实现的图像加密算法，采用Arnold变换，对于初涉信息安全的人员有一定参考价值-The algorithm of encrypted image completed in VC, applying the Arnold transform .It is valuable to people who will devote himself to infomation security

将小于32位的码字用1011编程循环冗余码！ 并且可以检验已编好的循环冗余码是否正确！-Will be less than 32-bit code word to use Cyclic Redundancy Code 1011 programming! And can be tested has been a good cyclic redundancy code is correct!

数字水印技术的基本概念-A survey of Digital watermarking technique. It may an overview about watermarking.

目前企业面临的计算环境和过去有很大的变化，许多数据资源能够依靠网络来远程存取，而且越来越多的通讯依赖于公共网络公共网络（如 Internet），而这些环境并不保证实体间的安全通信，数据在传输过程可能被其它人读取或篡改。-currently facing the enterprise computing environment and past a great change, many data resources to be able to rely on remote network access, and more and more dependent on public communications networks public networks (such as the Internet), which environment is not a guarantee of the security entities communications, data transmission possible by other people read or tampered with.

AES加密软件，用于加密当前文本框中的内容。使用的是美国国家标准（也被ISO所采纳）最新加密算法AES。-AES encryption software, encryption for the current contents of the text box. The use of the American National Standards (also adopted by the ISO) the latest encryption algorithm AES.

最流行的vb程序反编译软件-most popular procedures vb-building software

Base64 加密算法（Author 蒋柏良 Jerry Jiang)-* * DESCRIPTION * Base64 processes input in 24bit chunks by converting each chunk into 4 * bytes of output. It does so by splitting input into four 6bit groups and * using these as indexes in the following substitution table- * const char base64_map[] = * "ABCDEFGHIJKLMNOPQRSTUVWXYZ" * "abcdefghijklmnopqrstuvwxyz" * "0123456789+/" * If an input is not a multiple of 3 bytes, it s padded with zeros. In * this case the output bytes that consist entirely of the pad data are * replaced with = . * * Example * An input of 0x00 0x45 0xF2 is equivalent to 00000000 01000101 11110010 * bit sequence, which s then split into 000000 000100 010111 110010 * and these are substituted to produce the following base64 encoding * A E X y * * RETURN VALUE * b64_length() should return output length for the input of len bytes. * b64_encode() should encode len bytes from src int