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Abstract: This short note describes an improvement to the first two of the three public key cryptosystems proposed by Zheng and Seberry, which are provably secure against chosen ciphertext attacks. The improvement removes a shortcoming with the original cryptosystems, which occurs when they are used for both confidentiality and sender authentication purposes. (Update)
Context of citations to this paper: More
...and k 2 are defined in the same way as in SCS1. C kh is a slightly modified version of a scheme that has received special attention in [23, 3] (see also earlier work [25] Now assume that there is an attacker for SCS1. Call this attacker ASCS1 . We show how A SCS1 can be...
.... k 1 ; k 2 ) k = hash(y x b mod p) It turns out C kh is a slightly modified version of a scheme that has received special attention in [29, 3]. See also earlier work [33] Using a similar argument as that in [29, 3] we can show in the following that for C kh , it is...
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BibTeX entry: (Update)
Y. Zheng. Improved public key cryptosystems secure against chosen ciphertext attacks, February 1994. http://citeseer.ist.psu.edu/zheng94improved.html More
@techreport{ zheng94improved,
author = "Yuliang Zheng",
title = "Improved Public Key Cryptosystems Secure against Chosen Ciphertext Attacks",
year = "1994",
url = "citeseer.ist.psu.edu/zheng94improved.html" }
Citations (may not include all citations):659 Random oracles are practical: A paradigm for designing effic.. - Bellare, Rogaway - 1993
601 A public key cryptosystem and a signature scheme based on di.. (context) - ElGamal - 1985
428 IEEE Transactions on Information Theory (context) - Diffie, Hellman et al. - 1976
358 Universal classes of hash functions (context) - Carter, Wegman - 1979
334 How to generate cryptographically strong sequences of pseudo.. (context) - Blum, Micali - 1984
206 Federal Information Processing Standards Publication FIPS PU.. (context) - of, Technology et al. - 1995
191 New hash functions and their use in authentication and set e.. (context) - Wegman, Carter - 1981
147 Efficient signature generation by smart cards (context) - Schnorr - 1991
63 An efficient probabilistic public key encryption scheme whic.. (context) - Blum, Goldwasser - 1985
40 Computation of discrete logarithms in prime fields - LaMacchia, Odlyzko - 1991
23 Immunizing public key cryptosystems against chosen ciphertex.. - Zheng, Seberry - 1993
14 Simultaneous security of bits in the discrete log (context) - Peralta - 1985
8 HAVAL --- a one-way hashing algorithm with varialbe length o.. (context) - Zheng, Pieprzyk et al. - 1993
7 The discrete logarithm hides O (context) - Long, Wigderson - 1988
4 STRANDOM --- a cryptographically strong pseudo-random number.. (context) - Zheng - 1993
3 Another method for obtaining security against chosen ciphert.. (context) - Lim, Lee - 1994
2 A practical digital multisignature scheme based on discrete .. - Hardjono, Zheng - 1993
Documents on the same site (http://www.sis.uncc.edu/~yzheng/papers/): More
Structures of Cryptographic Functions with Strong.. - Seberry, Zhang, Zheng (1994) (Correct)
Sibling Intractable Function Families and Their.. - Zheng, Hardjono.. (1992) (Correct)
Signcryption and Its Applications in Efficient Public Key Solutions - Zheng (1997) (Correct)
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