PRIVACY ENHANCED IDENTITY SCHEME USING AN UN-LINKABLE IDENTIFIER

摘要

A Privacy enhanced identity scheme that may use public and private key cryptography to selectively distribute attributes of a token holder to a relying party. A challenge message {Rnonce, RID}, where Rnonce is a reader nonce and RID is a reader identifier (330). Methods may also include, responsive to the challenge message, sending a response message including at least an encrypted private token identifier TID and a session key k (360). In response to a challenge from a reader. The token sends a message that includes token identifier that is un-linkable to other identifier sent from the same token (370).