Pseudonym Systems
نویسندگان
چکیده
Pseudonym systems allow users to interact with multiple orga nizations anonymously using pseudonyms The pseudonyms cannot be linked but are formed in such a way that a user can prove to one organization a statement about his relationship with another Such a statement is called a credential Previous work in this area did not protect the system against dis honest users who collectively use their pseudonyms and credentials i e share an identity Previous practical schemes also relied very heavily on the involve ment of a trusted center In the present paper we give a formal de nition of pseudonym systems where users are motivated not to share their identity and in which the trusted center s involvement is minimal We give theoretical con structions for such systems based on any one way function We also suggest an e cient and easy to implement practical scheme
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تاریخ انتشار 1999