计算机与现代化 ›› 2009, Vol. 8 ›› Issue (8): 137-139.doi: 10.3969/j.issn.1006-2475.2009.08.038
• 信息安全 • 上一篇 下一篇
陈华1,2,蔡光兴1
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CHEN Hua1,2，CAI Guang-xing1
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摘要： 针对现有的基于身份签名系统的密钥托管问题，提出了一种新的基于身份的无可信中心签名方案。新方案通过将两个部分公钥绑定相同的一个身份，从而解决了密钥托管问题。在随机预言模型下，基于CDHP困难问题，新方案被证明能够抵抗适应性选择消息和身份的存在性伪造攻击。
关键词: 基于身份的签名方案, 密钥托管问题, 无可信中心, 双线性对, 随机预言模型
Abstract: An efficient IDbased signature scheme without trusted party is proposed, against the problem of key escrow of IDbased signature system. The new scheme could solve the key escrow problem through binding two partially public keys with a same identity. Under the random oracle model, it has been proved secure against existential forgery on adaptively chosen message and ID attack based on the hardness of the computation diffiehellman problem(CDHP).
Key words: ID-based signature scheme, key escrow, non-trusted party, bilinear parings, random oracle model
中图分类号:
TP309
陈华;蔡光兴. 可证明安全的基于ID的无可信中心签名方案[J]. 计算机与现代化, 2009, 8(8): 137-139.
CHEN Hua;CAI Guang-xing. Provably Secure ID-based Signature Scheme Without Trusted Party[J]. Computer and Modernization, 2009, 8(8): 137-139.
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http://www.c-a-m.org.cn/CN/Y2009/V8/I8/137
