一个简单实现RC5加密算法的例子！仅供参考！

DES算法的C语言实现，大家可以参考一下。-DES algorithm to achieve the C language, we can reference.

des加密，必须是8位英文字符，或4位中文字符-des encryption, must be 8 characters in English, or four Chinese characters

sha-1算法是目前常用的数字摘要算法，可以为任意长度的数据生成20字节的数字摘要，是数字签名的基础-sha-1 algorithm is commonly used in digital digest algorithm, for arbitrary length of 20 bytes of data generation digital summary is the basis of digital signatures

PE程序加密壳源程序 -PE procedure encryption shell source program

在卡片上管理密码的工具。密码被标注并集体加密存储在卡片上。因此这是一个安全存储密码的方法-on the card password management tool. Tagging password encryption and collective memory on the card. So this is a safe method of storage of passwords

笔者长期从事移动通信系统的无线链路调制与解调、物理层实现方面的工作。在移动通信GSM系统中，我们进行语音或者业务信道解调时，都会遇到CRC的求解。通常在硬件DSP实现时，特别是40位CRC求解时候，由于生成多项式有41项，DSP最大一次能处理40位，所以使用单个寄存器会遇到一些困难，那么以下这个程序将会解决这一困难（这是针对定点DSP、C55xx的编程实现方法）。-The author has long been engaged in mobile communication system modulation and demodulation of wireless links, the physical layer to achieve work. GSM in the mobile communications system, we have a voice or channel demodulation operations, it will encounter the solution of CRC. DSP hardware usually realize, especially when solving the 40 CRC, as the generation polynomial has 41, DSP can handle the largest 40, so using a single register may encounter some difficulties, then following this process will solve this One difficulty (which is for fixed-point DSP, C55xx realize programming methods).

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.

基于unix下的RSA加密实例分析-under the RSA encryption Case Analysis

给linux的shell脚本加密(ZT).rar-to the shell script encryption (ZT). Rar

安全支持提供器接口（SSPI）源码- Safe support provision connection (SSPI) source code