计算机科学 ›› 2011, Vol. 38 ›› Issue (3): 136-139.
• 计算机网络与信息安全 • 上一篇 下一篇
王之怡，刘铁，康立，谢静，雷刚
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WANG Zhi-yi,LIU Tie,KANG Li,XIE Jing,LEI Gang
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摘要： 在标准模型下的适应性选择消息不可伪造攻击(UCMA)安全模型中，Paterson和Schuldt(PS)构造了双线性映射群中基于计算DH难题的基于身份数字签名算法。PS算法直接利用两组独立的Watcrs身份处理函数去分别处理用户身份和签名消息，因此算法中公钥参数数量很大。新算法提出一种改进的参数选择方法以大大减少公钥参数数量，且能在标准模型下得到安全证明。
关键词: 基于身份的数字签名，标准模型，短的公钥参数
Abstract: In the standard model an UCMA security IBS scheme was proposed by Peterson and Schuldt, which was based on computational Diffie-Hellman problem in bilinear pairing group. Two independent Waters' identity hash functions were directly employed to treat the user's identity and the signature message, respectively, so PS's IBS scheme had a great number of public keys. An improved parameters selecting method was proposed in the new scheme, which only needs a small number of public keys,and the new scheme can be proved security in the standard model.
Key words: Identity-based signature, Standard model, Short public key
王之怡，刘铁，康立，谢静，雷刚. 短公钥的可证明安全基于身份数字签名算法[J]. 计算机科学, 2011, 38(3): 136-139. https://doi.org/
WANG Zhi-yi,LIU Tie,KANG Li,XIE Jing,LEI Gang. Short Public Key Provable Security Identity-based Signature Scheme[J]. Computer Science, 2011, 38(3): 136-139. https://doi.org/
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