1. A password authentication scheme based upon Rabin's public-key cryptosystems;Chang,1990
2. A user authentication scheme for requiring secrecy in the computer;Evans;Comm. ACM,1974
3. Password authentication based on pubic-key distribution cryptosystem;Harn,1989
4. Password authentication using public-key encryption;Hwang,1983
5. Password authentication using quadratic residue;Laih,1988