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中文摘要：
采用多个密钥生成中心共同作用产生用户私钥的思想，基于多线性映射构造了一个基于ID的环签名方案，使得任何一个不可信的密钥生成中心都无法单独伪造有效的环签名，解决了单个密钥生成中心不可信的问题；并将该方案扩展到一般结构。
英文摘要：
An ID-based ring signature scheme was constructed using multilinear pairing on the base of the idea that the generations of the private keys of users were completed by more than one key generation centre. None of the key generation centers could forge a valid ring signature all by itself. All the centers have to collaborate to finish a forgery. The extension of the scheme to support the general access structure was also considered.
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