一個動態(tài)的可追蹤匿名認證方案
A Dynamic Anonymous Authentication Scheme with Identity Escrow
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摘要: 該文提出了一個支持身份追蹤的匿名認證方案。該方案有下列優(yōu)點：(1)用戶動態(tài)加入和吊銷特別方便，管理員僅需在公告牌上公布和刪除該成員的相關數(shù)據(jù)。(2)示證人可以靈活地、主動地選擇匿名范圍，即他可以任意選取多個合法的用戶并說明自己在其中。(3)追蹤示證人的具體身份是受限制的，管理員無法單獨實現(xiàn)身份追蹤，必須和驗證者合作才能共同追蹤示證人的身份。另外，在抵抗外部攻擊和偽裝攻擊方面，該方案具有任意彈性，明顯的優(yōu)于Boneh(1999)的1-彈性方案。
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關鍵詞:
- 匿名認證;身份追蹤;k-彈性
Abstract: A new anonymous authentication scheme with traceable identity is proposed. This scheme has the following advantages: (1) It is easy for users to dynamically join and leave, the only thing needs to do is manager add or delete the relevant data of users. (2) The prover can unrestrictedly choose a group of users and declare that himself belong to it, so he can choose his anonymous scope initiatively and freely. (3) In the process of trace the identity of prover, the right of manager is restricted, he needs cooperation with the verifiers to reveal the identity of the prover. In the aspect of against outside attack and masking attack, compared with the scheme 1-resilient of Boneh(1999), this scheme can realize arbitrary resilience . -
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