| 摘要 |
PROBLEM TO BE SOLVED: To provide a malleable pseudonym certificate system and method for a communication network. SOLUTION: In a pseudonym certificate system, a user acquires a root proof from a trusted entity, generates pseudonym certificates based on the root proof, and sends anonymous public keys each equipped with one pseudonym certificate to verifiers. Through use of the pseudonym certificate, the verifier believes that the user's anonymous public key is certified by the trusted entity. The pseudonym certificate contains no information by which the verifier can figure out the real identity of the user. With the malleable pseudonym certificate system, the trusted entity needs only certify once for the user's root public key. The user can generate by him or herself mass anonymous public keys where each anonymous public key includes a distinct pseudonym certificate. COPYRIGHT: (C)2007,JPO&INPIT
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