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基于证书代理重加密方案

Certificate-based proxy re-encryption scheme
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摘要 代理重加密方案使一个半可信的代理者将用委托者的公钥加密的密文转换成用受委托者公钥加密的密文,在转换其间代理者不能获得相关的明文信息。基于证书的公钥密码体制克服了传统公钥密码体制和基于身份密码体制的缺点与不足,为此将证书加密体制与代理重加密结合起来,提出了一个在随机预言模型下的适应性选择密文安全的基于证书代理重加密方案。 The proxy re-encryption allows a semi-trust proxy to transform a ciphertext which is encrypted under the delegator＇s public key into delegatee＇s public key,during the transformation,the proxy can＇t learn any information about the plaintext. The certificate-based encryption overcomes the defect of the traditional public key encryption and identity-based encryption. This paper combines the certificate-based encryption and the proxy re-encryption,proposes a certificate-based proxy re-encryption scheme,which is proved secure against the chosen ciphertext security in the random oracle.
作者 赵雪霞 赵晶晶
机构地区 河海大学计算机与信息学院
出处 《信息技术》 2015年第4期148-152,共5页 Information Technology
关键词 代理重加密 证书加密 随机预言模型 proxy re-encryption certificate-based encryption random oracle
分类号 TN918.4 [电子电信—通信与信息系统]
  • 相关文献

参考文献10

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二级参考文献22

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共引文献8

信息技术
2015年 第4期

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