| 短公钥的可证明安全基于身份数字签名算法 |
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| 引用本文： | 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. |
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| 作者姓名： | 王之怡 刘铁 康立 谢静 雷刚 |
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| 作者单位： | 1. 西南财经大学经济信息工程学院,成都,610074
2. IBM中国研究院,北京,100193 |
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| 基金项目： | 本文受国家自然科学基金青年项目“电子商务协议交易相关安全属性的形式化验证”(60903201)资助。 |
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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。
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| 关 键 词： | 基于身份的数字签名，标准模型，短的公钥参数 |
Short Public Key Provable Security Identity-based Signature Scheme |
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| 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. |
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| Authors: | WANG Zhi-yi LIU Tie KANG Li XIE Jing LEI Gang |
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| Affiliation: | (School of Economics Information Engineering,Southwestern University of Finance & Economics,Chengdu 610074,China) (IBM Research-China,Beijing 100193,China) |
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| 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. |
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| Keywords: | Identity-based signature Standard model Short public key |
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