基于口令的服务器辅助RSA签名协议的分析

s the password can be easily remembered by people, which makes application protocol of password-based has broad space, which also includes server-aided-based computation. Firstly, this paper detailed introduced the method from the weak password to be strong security. Then, analyze the existing server-aided RSA signature schemes with the help of single server based on password, server-aided RSA signature schemes with the help of two servers and server-aided signature scheme based on password without servers’ public keys.