数字电视中的加密

rsa加密算法，VC环境，基于对画框的演示rsa算法的程序。-rsa encryption algorithm, VC environment, based on a demonstration of frame rsa algorithm procedure.

QR 码 （从快速响应代码缩写） 是一类矩阵条码商标（或二维条码） 设计为在日本汽车行业的第一次。条码是机器可读的光学标签包含有关它所附加到的项目信息。QR 码使用四个标准化编码模式 （数字、 字母数字、 字节 / 二进制和日文汉字）为了高效地存储数据 ；此外可以使用扩展。

Motivation - A simple DES core  - Fast and Small Version  - Open Source Compatibility I believe that the core complies to NIST-800-17. However, there has been no formal third party verification. The official NIST specification can be downloaded here: 800-17.pdf. For the Triple DES, the NIST reference is located here: 

希尔排序算法: 基本思想：将整个无序序列分割成若干小的子序列分别进行插入排序。 序列分割方法：将相隔某个增量h的元素构成一个子序列。在排序过程中，逐次减小这个增量，最后当h减到1时，进行一次插入排序，排序就完成。增量序列一般采用：ht=2t-1,1≤t≤[log2n]，其中n为待排序序列的长度。-Hill sorting algorithm: the basic idea: the whole sequence disorder is separated into a number of small sub-sequences respectively Insertion Sort. Sequence segmentation method: h will be separated by an incremental elements constitute a subset of sequences. In the sort process, the successive decrease of the increment, and finally reduced to one when h when an insertion sort, sort completed. Incremental sequence generally use: ht = 2t-1, 1 ≤ t ≤ [log2n], in which n is the length of sequence to be sorted.

base64的解码Ｃ语言实现-base64 decoding C Language

MD5加密 MD5加密-MD5 encryption MD5 encryption MD5 encryption

Base64编解码，纯c语言，解码忽略换行符，可以直接解码邮件源码

实现BASE64编码-achieve BASE64 encoding

cox方法展频水印matlab源码，对bitmap图像隐藏信息-frequency watermarking method Show Matlab source of bitmap images for hidden messages

《DES算法的介绍和实现》配套源代码- "DES Algorithm Introduction And Realization" necessary source code