项目中使用的经典加密算法代码，非常实用的代码，放心使用-Classic encryption algorithm code used in the project, very useful code, ease of use

LPC2138下加密/解密算法,完整MDK工程文件,测试通过,也可方便移植到其他平台.A5加密算法速度非常快.占用内存非常少,只需几十个字节就能工作,可用于流加密.-LPC2138 under the encryption/decryption algorithms, complete MDK project file, the test can also be easily ported to other platforms. A5 encryption algorithm is very f

SHA-256加密算法，可计算出字符串或文件的HASH值，带测试程序。-SHA-256 encryption algorithm to calculate the value HASH string or file with the test procedures.

基于STM32F10X的DES加密算法,可直接用于项目设计,可以直接编译.-STM32F10X based DES encryption algorithm, can be directly used for project design, can be directly compiled.