This is a DVD decryption source program.

这是RC5算法的实现-This is the realization of RC5 Algorithm

文件验证，利用MD5算法做文件的HASH，得到统一结果判断文件内容的一致性-File Hash

pki资料，是希望入门pki的人的最好的参考资料-pki data entry pki is the best reference.

this about cryptography. takes text as input and decrypt it and then aagin in plane text-this is about cryptography. takes text as input and decrypt it and then aagin in plane text

RegistTimes RegistDays时间限制控制控件。(有源代码）工作在：D2 D3 D4 D5。作者：Mats Asplund。-RegistTimes RegistDays controls time limit control. (Source code) in: D2 D3 D4 D5. Author: Mats Asplund.

RSA算法 :首先, 找出三个数, p, q, r, 其中 p, q 是两个相异的质数, r 是与 (p-1)(q-1) 互质的数...... p, q, r 这三个数便是 person_key，接著, 找出 m, 使得 r^m == 1 mod (p-1)(q-1)..... 这个 m 一定存在, 因为 r 与 (p-1)(q-1) 互质, 用辗转相除法就可以得到了..... 再来, 计算 n = pq....... m, n 这两个数便是 public_key ，编码过程是, 若资料为 a, 将其看成是一个大整数, 假设 a < n.... 如果 a >= n 的话, 就将 a 表成 s 进位 (s

随着二维码的不断发展，生活中有越来越多的二维码识别程序，本程序识别典型的二维码，为本人课程设计时写的代码，在识别时仅识别典型的二维码。

Universal De-embedding Procedure

md5算法,采用c++实现的md5_16位实现-md5 algorithm, used to achieve the c-achieving md5_16

The Cryptography API: Next Generation(CNG) is a new and agile framework in Windows Vista, which implements an extensible provider model that allows you to load a provider by specifying the required cryptographic algorithm rather than having to hardcode a specific provider. -The Cryptography API: Next Generation (CNG) is a new and agile framework in Windows Vista, which implements an extensible provider model that allows you to load a provider by specifying the required cryptographic algorithm rather than having to hardcode a specific provider.