Identity Based (ID2S) Authenticated Exchange Protocols

Résumé

In the two-server a key password-authenticated exchange (PAKE) protocol, a sender divides its password and stores into two shares of its association in the two servers, individually, and the two servers then progressing to authenticate the client without memorising the password of the client. And In case one server is distrusted by an opponent, the password of the user is asked to endure strong. The author introduces two compilers that transform any two-party PAKE protocol to a two-server PAKE protocol by the identity-based cryptography, called ID2S PAKE protocol. By the compilers, we can assemble ID2S PAKE protocols which achieve understood authentication. As long as the underlying two-party PAKE protocol and identity-based encryption or signature system have provable protection without casual oracles, the ID2S PAKE protocols constructed by the compilers can be proven to be secure without random oracles. Associated with the Katz et al.

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