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首页> 外文期刊>Journal of Computers >CCA Secure Publicly Verifiable Public Key Encryption Without Pairings Nor Random Oracle and Its Applications
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CCA Secure Publicly Verifiable Public Key Encryption Without Pairings Nor Random Oracle and Its Applications

机译：CCA确保公开可验证的公钥加密，无需配对，也不是随机的Oracle及其应用程序

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—hosen ciphertext security (CCA security)hosen ciphertext security (CCA security)C is now a widely accepted necessary security notion for public key encryption. CCA secure public verifiable public key encryption has many applications such as threshold public key encryption and proxy re-encryption etc. Furthermore, these years “random oracle model” has seen risen criticize by many cryptographers. Hence, researchers give great effort to pursue public key public key encryption with publicly verifiability in the standard model. However, all the existing CCA secure publicly verifiable public key encryption in the standard model relies on costly bilinear pairing. In this paper, based on Hanaoka and Kurosawa’s efficient CCA secure public key encryption under Computational Diffle-Hellman assumption proposed in Asiacrypt’08 and the famous Cramer-Shoup encryption scheme, we try to construct a CCA secure public verifiable public key encryption without pairing in the standard model. As a result of its application, we achieve a CCA secure public verifiable threshold public key encryption without pairing in the standard model, a CCA secure unidirectional proxy re-encryption without pairing in the standard model.
机译：-HOSHEN密文安全（CCA安全性）HOSEN密文安全（CCA安全性）C现在是公钥加密的广泛接受必要的安全概念。 CCA安全公共可验证公钥加密有许多应用程序，如阈值公钥加密和代理重新加密等。此外，这些年“随机oracle模型”已经看到许多加密人员批评。因此，研究人员努力在标准模型中以公开的验证追求公钥公钥加密。但是，所有现有的CCA安全公开可核解的公钥加密在标准模型中依赖于昂贵的双线性配对。在本文中，基于Hanaoka和Kurosawa的高效CCA安全公钥加密，在亚洲亚洲克定的I8和着名的Cramer-Shoup加密方案中提出的计算漫步假设，我们尝试构建一个CCA安全公共可验证公钥加密，而不配对标准模型。由于其应用，我们实现了CCA安全公共可验证阈值公钥加密，而无需在标准模型中配对，CCA确保单向代理重新加密，而不配对标准模型。

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