| Summary: | 碩士 === 淡江大學 === 資訊工程學系 === 92 === In an anonymous proxy signature scheme, proxy signatures can be validated without knowing proxy signers. Shum and Wei [17] first proposed the related proxy signature scheme. However, their scheme has heavy burden caused by trusted alias issuing authorities and authenticated secure channels. To remove trusted authorities, a new anonymous proxy signature scheme is proposed by us. For the group-oriented applications, an anonymous multi-proxy signature scheme is also proposed by us. Moreover, the anonymity of our anonymous multi-proxy signature scheme is so strong that any proxy signer cannot know the identity of anyone in the proxy group.
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