文件加密技术的案例文件加密技术很多，其中W

循环异或-XOR cycle

ntstrsafe lib and csq.lib

des加密　ElGamal算法既能用于数据加密也能用于数字签名，其安全性依赖于计算有限域上离散对数这一难题。 　　密钥对产生办法。首先选择一个素数p，两个随机数, g 和x，g, x

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.

一个由java语言编写的MD5加密算法的实现.-a java language from the MD5 encryption algorithm achieved.

最快速的可满足性分析工具软件，曾经获得比赛的冠军，能够让学习者，学很多的编程技巧-The fastest satisfiability analysis tool software, has won the championship, will allow learners, learning a lot of programming skills

线形移位存储器生成流密码-linear displacement flow generated password memory

运用 OpenSSL 实现对文件加密-The use of OpenSSL to achieve file encryption

md5是常用的加密算法，但是在vc中没有系统的类可以用。本程序完成了md5类，使用简单。不是国内网上流传的类。-md5 is a commonly used encryption algorithm, but in vc no class system can be used. This procedure was completed md5 categories, using a simple. Rather than domestic circulating online class.

Proguard是强大的Java字节码混淆器，含有源代码，可以根据自己需求修改编译。满足自身需求。 也可以作为爱好者自学的好材料。