1、 实验要求：用高级语言实现IDEA算法的加密

使用的是BCB5开发的一个简单的3DES的DEMO，对文件采用的是密文挪用来处理短块。-Using BCB5 developed a simple 3DES of DEMO, the document is used ciphertext diverted to deal with the short block.

MIME base64 简单的编解码,主要用于学习之用-A simple MIME base64 encoding and decoding.

将其他文件隐藏在BMP图像中！好-other documents hidden in BMP image! Good

密码算法速度快于其他密码算法-Cipher faster than other cryptographic algorithms

公钥加密程序，采用非对称密钥，这里以类的形式调用-Public key encryption procedures, the use of non-symmetric key, where to type the form of call

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.

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

md5算法的java源代码-md5 algorithm source code of java

pgp加密例子 -pgp encryption example

Base64 encoding and decoding functions coded in c sharp for simple encryption works. Also source code for increasing speed of asp.net apps by combining javascripts.