计算机科学 ›› 2009, Vol. 36 ›› Issue (9): 28-31.
• 计算机网络与信息安全 • 上一篇 下一篇
陆阳,李继国,肖军模
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LU Yang,LI Ji-guo, XIAO Jun-mo
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摘要： 基于证书的公钥密码体制有效克服了基于身份的公钥密码体制和传统公钥密码体制中存在缺陷，成为一种颇受关注的公钥体制。以SK-IBE方案和EIGamal公钥加密方案作为构件，提出了一个高效的基于线对和基于证书的加密方案，并在随机预言模型下给出了安全性证明。在p-BDHI假设下，该方案被证明是IND-CBE-CCA安全的。在效率方面，该方案仅在解密时计算一个线对，因此方案的总体性能是高效的，经对比分析，优于现有的其它CBE方案。
关键词: 基于证书的加密方案，线对，IND-CBE-CCA，随机预言模型
Abstract: The certificate-based encryption (CBE) is a new PKC paradigm which combines traditional publi}key encryption (PKE) and identity based encryption (IBE) while preserving their features. CBE provides an efficient implicit certification mechanism for a PKI and allows a form of automatic certificate revocation,while it is not subjected to the private key escrow problem and secret key distribution problem inherent in IBE. This paper presented an efficient pairing-based CBE scheme and proved it to be IND-CBE-CCA secure in the random oracle model based on the hardness of the p-BDHI problem. Compared with other existing CBE schemes, this scheme has obvious advantage in the computation performance.
Key words: Certificate-based encryption,Pairing,IND-CBE-CCA, Random oracle model
陆阳,李继国,肖军模. 一个高效的基于证书的加密方案[J]. 计算机科学, 2009, 36(9): 28-31. https://doi.org/
LU Yang,LI Ji-guo, XIAO Jun-mo. Efficient Certificate-based Encryption Scheme[J]. Computer Science, 2009, 36(9): 28-31. https://doi.org/
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