Systems, methods and computer program products for two-party key authentication provide additional security against intruders that might gain access to the password database of a server. The client verifies his clear password over an encrypted channel, rather than merely verifying the encrypted password,...http://www.google.com.au/patents/US6064736?utm_source=gb-gplus-sharePatent US6064736 - Systems, methods and computer program products that use an encrypted session for additional password verification
