一种高效的可选择验证完整性和消息源的加密体制
An Efficient Encryption Scheme with Choosable Process of Verifying Integrity and Source of Messages
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摘要: 该文改进了P．Paillier等提出的公钥加密体制．提高了体制的效率，并证明了改进后加密体制的安全性与原体制的安全性是等价的。在不增加密文长度的情况下，进一步把此体制改进成高效的加密+签名体制，如果消息的接收方认为有必要，可以随时验证明文消息的完整性和消息的确切来源。Abstract: The efficiency of a public-key encryption scheme proposed by P. Paillier et al. is improved. The equivalence of security of the improved encryption scheme and that of the original encryption scheme is proved. Without increasing the size of the ciphertext, the scheme is further modified into an efficient signcryption scheme. If necessary, the receiver can verify the integrity and source of the message at any time.
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Paillier P, Pointcheval D. Efficient public-key cryptosystem provably secure against active adversaries.[J]. Advances in Cryptology-ASIACRYPT9.1999,LNCS Vol. 1716:163-[2]Catalano D, Gennaro R, Graham N H. The bit security of Paillierencryption scheme and its applications.[J]. Advances in Cryptology-EUROCRYPTO0.2001,LNCS Vol. 2045:229-[3]Damgard I, Jurik M. A generalization, a simplification and some applications of Pailliers probabilistic public-key system.[J].Advances in Cryptology-PKC9.2001,LNCS Vol. 1992:119-[4]Okamoto T, Uchiyama S. A new public key cryptosystem as secure as factoring.[J]. Advances in Cryptology EUROCRYPTO9.1998,LNCS Vol. 1043:309-[5]Cramer R, Shoup V. Universal hash proofs and a Paradigm for adaptive chosen ciphertext secure public-key encryption.[J].Advances in Cryptology EUROCRYPTO0.2002,LNCS Vol.2332:45-[6]Zheng Y L. Digital signcryption or how to achieve cost (signature encryption) -
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