LINUX环境下的LDPC代码； 有独立的编码，通道模型和解码模块； 并且有实例。-LINUX environment of LDPC code; Have independent coding, channel model and decoding module; and there are examples.

DES加密算法模块，取自GNU/Linux中加密的源码，对长于8位的密码进行循环DES加密-DES encryption algorithm module, taken from the GNU / Linux source code encryption for longer than eight reuse passwords DES encryption