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A New ID-Based Proxy Multi-Signature Scheme from Bilinear Pairings 认领 引用 被引量：1
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作者 GU Chun-xiang PAN Heng ZHU Yue-fei 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第1期193-197,共5页
ID-based public key cryptosystem can be a good alternative for certifieate-based public key setting. This paper provides an efficient ID-based proxy multi signature scheme from pairings. In the random oracle model, we... ID-based public key cryptosystem can be a good alternative for certifieate-based public key setting. This paper provides an efficient ID-based proxy multi signature scheme from pairings. In the random oracle model, we prove that our new scheme is secure against existential delegation forgery with the assumption that Hess＇s scheme-1 is existential unforgeable, and that our new scheme is secure against existential proxy multi-signature forgery under the hardness assumption of the computational Diffie-Hellman problem. 展开更多
关键词 ID-based signatures proxy multi-signature ID-based proxy multi signatures bilinear pairlngs provable security
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CONDITIONAL FACTORIZATION BASED ON LATTICE THEORY FOR -INTEGERS 认领 引用
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作者 Zheng Yonghui Zhu Yuefei 《Journal of Electronics(China)》 2008年第2期254-257,共4页
In this paper,the integer N = pkq is called a -integer,if p and q are odd primes with almost the same size and k is a positive integer. Such integers were previously proposed for various cryptographic applications. Th... In this paper,the integer N = pkq is called a -integer,if p and q are odd primes with almost the same size and k is a positive integer. Such integers were previously proposed for various cryptographic applications. The conditional factorization based on lattice theory for n-bit -integersis considered,and there is an algorithm in time polynomial in n to factor these integers if the least significant 「((2k-1)n)/((3k-1)(k+1))」bits of p are given. 展开更多
关键词 LLL-algorithm Number field sieve Elliptic curve method
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