collusion key attack 共谋密钥攻击
Improved schemes have advantages of nonrepudiation, using insecure channel, against the public key substitution attack and collusion attack etc.
改进后的方案具有不可否认性,不使用安全信道,以及抵抗公钥替换攻击和合谋攻击等优点。
At present, there are three kinds of traitor tracing schemes against collusion key attack, which are symmetrical traitor tracing schemes and dissymmetrical traitor tracing schemes;
目前,对抗共谋密钥攻击的叛徒追踪方案主要有对称追踪方案、非对称追踪方案、门限追踪方案;
Proposed a pay-TV scheme with user revocation, but it is a private-key scheme, also it does not provide multiple-service capability and meantime can not resist collusion attack.
Mu等人提出了一个可撤销用户的付费电视方案,但其方案是私钥方案,并且没有提供多服务的功能,同时也不能抵抗共谋攻击。
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