计算机科学 ›› 2012, Vol. 39 ›› Issue (6): 64-67.
• 计算机网络与信息安全 • 上一篇 下一篇
邹秀斌,崔永泉,付才
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摘要： 目前，大多数HIRE方案都是基于素数阶双线性群的，其密钥和密文中的参数都是在素数阶双线性群上的取值。构造了一种基于组合阶双线性群的HIRE方案。密钥元组中各个参数从一素数阶群中取值，而密文元组的各个参数等于两个不同素数阶群的元素之积，其中一素数阶群的元素充当盲化因子。盲化后的密文能够增强新HIRE方 案的安全性。在实际解密过程中，密文中的盲化因子对解密并没有任何影响。新的HIRE方案在标准模型下实现了选择身份攻击安全。
关键词: HIRE, IBE，组合阶双线性群，CCA
Abstract: Presently, most of the HIRE schemes are based on the prime order bilinear groups. hhe author constructed a HIRE scheme based on composite order bilinear groups. The component parameters of secret key tuple are those elemenu in an group of prime order while the ones of ciphertext tuple arc the products of some elements in two groups,which are of different prime order, and elements in one of these groups, which act as blind factors. hhe blinded cipher-text enhances the security of the new HIRE scheme. The blind factors of the ciphertext have no effects on the decryption. hhe new HIBE scheme is selectivcID secure in the standard model.
Key words: HIRE, IBE, Composite order bilinear groups, CCA
邹秀斌,崔永泉,付才. 一种基于组合阶双线性对群的HIBE方案[J]. 计算机科学, 2012, 39(6): 64-67. https://doi.org/
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