| 摘要 |
The invention provides a malleable pseudonym certificate system and method f or a communication network. According to one embodiment of the invention, a user acquires a root proof from a trusted entity, generates one or more pseudonym certificat es 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 believe s 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 certif y once for the user's root public key. The user can generate by him or herself mass anonymo us public keys where each anonymous public key is equipped with a distinct pseudonym certificate.
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