快速去除PDF密码设置，不用安装，直接使用

uthash 是一个C语言的哈希表，支持各种结构类型的存储、添加、删除，这些操作都在固定的时间完成，跟哈希表本身的大小无关。键也可以是任何类型的数据。-is a C language uthash the hash table to support a variety of structural types of storage, add, delete, these operators are in a fixed time to complete, with the hash table size in itself has nothing to do. Keys can also be any type of data.

Galois域乘法器的Verilog源码 广泛用于信道编码、计算机代数及椭圆曲线加密等-Galois field multipliers are widely used in the Verilog source channel coding, computer algebra and elliptic curve encryption

MD5算法的VC示例,非常 好!-MD5 algorithm VC example, a very, very good!

hash算法的vb实现.很好用!-hash algorithm to achieve the vb. With good!

Base64编解码程序-Base64 code/decode program

SHA-1Hash函数源码，可以对任何文件做Hash，得到的Hash值为160位。具有抗强碰撞，弱碰撞等能力。虽然王小云已经找到了个别碰撞。但在新的好的hash函数出来之前仍将被广泛使用。-SHA-1Hash function source, any document can be done right hash, the hash value of 160. Anti-collision, the weak capabilities of the collision. Although Bruce Schneier, had found individual collisions. But the new good hash function will be out before widespread use.

MESS 1.07 加密壳源程序-MESS 1.07 encryptions shells source program

资源描述在IP层加密的IPSEC源码，包括各个模块的测试代码，可以针对具体的TCPIP协议栈进行移植，本人已经在uc/tcpip协议栈上进行了移植，测试成功，实现了局域网内多个节点的安全通信

实施一个小程序，以产生一对非对称密钥对要与RSA算法使用。

本文介绍了在JAVA开发环境中如何对文件和数据进行有效的加密，特别是里面API的调用-This paper presents the Java development environment and how to document effective data encryption, in particular inside the API ca