System for remote pass-phrase authentication

A system for authentication comprising:

• a first entity in a realm;
• a second entity in the realm;
• an authentication entity selected according to the realm and adapted to authenticate the first entity and the second entity using challenges and responses in accordance with an identifier and a pass-phrase for each of the first entity and the second entity.

A system for authentication comprising:

• a realm identifier associated with a first identifier and a first pass-phrase for a first entity;
• a second identifier and a second pass-phrase for a second entity, said second identifier and said second pass-phrase associated with the realm;
• an authentication entity for the realm, the authentication entity adapted to authenticate the first entity in accordance with the first identifier and the first pass-phrase and the second entity in accordance with the second identifier and the second pass-phrase, and to authenticate the first entity and the second entity in accordance with authentication proofs for the first entity and the second entity.

A system for authentication comprising:

• a realm identifier for a realm associated with a first identifier wherein said realm specifies a character set, case conversion, and hash function for performing authentication calculations, and a first pass-phrase for a first entity;
• a second identifier and a second pass-phrase for a second entity, said second identifier and said second pass-phrase associated with the realm;
• an authentication entity for the realm, the authentication entity adapted to authenticate the first entity in accordance with the first identifier and the first pass-phrase and the second entity in accordance with the second identifier and the second pass-phrase.

A system for authentication comprising:

• a realm identifier associated with a first identifier and a first pass-phrase for a first entity;
• a second identifier and a second pass-phrase for a second entity, said second identifier and said second pass-phrase associated with the realm;
• an authentication entity for the realm, the authentication entity adapted to authenticate the first entity in accordance with the first identifier and the first pass-phrase and the second entity in accordance with the second identifier and the second pass-phrase, and to perform reauthentication for the first entity and the second entity in accordance with a reauthentication cheating technique.