接着提出了一个基于身份的可证明安全的群签名方案。
Then, we propose a provably secure and ID-Based group signature scheme.
在标准模型下设计高效可证明安全的签名方案具有现实意义。
To design a signature scheme which are efficient and provably secure in the standard model is suitable for applications.
在随机预言模型下，该方案在适应性选择密文攻击下是可证明安全的。
In the random oracle model, the scheme is provably secure against adaptive chosen ciphertext attacks.
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