标准模型下基于身份第三方受约束匿名加密方案

针对基于身份加密方案中匿名性和密钥托管问题,利用阶为合数的双线性群,基于Waters方案和Goyal思想,提出一个标准模型下可证安全的基于身份第三方权利受约束匿名加密方案。分析表明,基于困难问题下DBDH假设和DL假设,证明该方案满足匿名性和第三方权利受约束性质,所提方案不仅可以保护接收者的隐私,同时还解决了密钥托管问题。...

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Bibliographic Details
Published in计算机工程与科学 Vol. 37; no. 2; pp. 269 - 275
Main Author 明洋 韩娟 张琳 周俊
Format Journal Article
LanguageChinese
Published 长安大学信息工程学院,陕西西安,710064 2015
Subjects
DBDH假设
DL假设
IBE
匿名
第三方权利受约束
DL assumption
匿名
DL假设
第三方权利受约束
anonymous
DBDH assumption
reducing trust in the PKG
DBDH假设
IBE
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ISSN1007-130X
DOI10.3969/j.issn.1007-130X.2015.02.013

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Summary:针对基于身份加密方案中匿名性和密钥托管问题,利用阶为合数的双线性群,基于Waters方案和Goyal思想,提出一个标准模型下可证安全的基于身份第三方权利受约束匿名加密方案。分析表明,基于困难问题下DBDH假设和DL假设,证明该方案满足匿名性和第三方权利受约束性质,所提方案不仅可以保护接收者的隐私,同时还解决了密钥托管问题。
Bibliography:reducing trust in the PKG; anonymous ; IBE ; DBDH assumption; DL assumption
43-1258/TP
MING Yang, HAN Juan,ZHANG Lin,ZHOU Jun （ School of Information Engineering, Chang＇ an University, Xi＇ an 710064, China）
Due to anonymity and key escrow problem in the IBE scheme, a reducing trust in the PKG and anonymous identity-based encryption scheme is proposed based on the scheme of Waters and the ideas of Goyal on composite order groups, which is secure without random oracles in the standard model. The analysis shows that the scheme satisfies anonymity and reduces trust in the PKG under the DBDH assumption and DL assumptions. It can not only protect receivers＇ privacy, but effectively solve the key escrow problem.
ISSN:1007-130X
DOI:10.3969/j.issn.1007-130X.2015.02.013