一种关于可信平台下身份认证技术的方案，直接匿名证明方案（DAA），该方案可实现匿名性。-A trusted platform on identity authentication technology programs, proof of direct anonymous program (DAA), the program can achieve anonymity.

采用DES/MD5算法，多线程同时加密，支持解密，可移植，可匿名或者注册用户（保留加密记录）登录。-use DES/MD5 arithmetic,multithreads encrypt and decrypt,can copy and remove from one pc to another,can anonymity login or register login(save the encrypt records)