block cryptosystem

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• Cryptosystem — There are two different meanings of the word cryptosystem. One is used by the cryptographic community, while the other is the meaning understood by the public. General meaning In this meaning, the term cryptosystem is used as shorthand for… …   Wikipedia

• Block cipher modes of operation — This article is about cryptography. For method of operating , see modus operandi. In cryptography, modes of operation is the procedure of enabling the repeated and secure use of a block cipher under a single key.[1][2] A block cipher by itself… …   Wikipedia

• McEliece cryptosystem — In cryptography, the McEliece cryptosystem is an asymmetric encryption algorithm developed in 1978 by Robert McEliece.[1] It was the first such scheme to use randomization in the encryption process. The algorithm has never gained much acceptance… …   Wikipedia

• Cramer–Shoup cryptosystem — The Cramer–Shoup system is an asymmetric key encryption algorithm, and was the first efficient scheme proven to be secure against adaptive chosen ciphertext attack using standard cryptographic assumptions. Its security is based on the… …   Wikipedia

• Naccache–Stern cryptosystem — Note: this is not to be confused with the Naccache–Stern knapsack cryptosystem. The Naccache–Stern cryptosystem is a homomorphic public key cryptosystem whose security rests on the higher residuosity problem. The Naccache–Stern cryptosystem was… …   Wikipedia

• Naccache–Stern knapsack cryptosystem — Note: this is not to be confused with the Naccache–Stern cryptosystem based on the higher residuosity problem. The Naccache–Stern Knapsack Cryptosystem is an atypical public key cryptosystem developed by David Naccache and Jacques Stern in 1997.… …   Wikipedia

• Niederreiter cryptosystem — In cryptography, the Niederreiter cryptosystem is a variation of the McEliece Cryptosystem developed in 1986 by Harald Niederreiter [1]. It applies the same idea to the parity check matrix H of a linear code. Niederreiter is equivalent to… …   Wikipedia

• Damgård–Jurik cryptosystem — The Damgård–Jurik cryptosystem[1] is a generalization of the Paillier cryptosystem. It uses computations modulo ns + 1 where n is an RSA modulus and s a (positive) natural number. Paillier s scheme is the special case with s = 1. The order φ(ns + …   Wikipedia

• Merkle–Hellman knapsack cryptosystem — The Merkle–Hellman knapsack cryptosystem was one of the earliest public key cryptosystems invented by Ralph Merkle and Martin Hellman in 1978.[1] Although its ideas are elegant, and far simpler than RSA, it has been broken.[2] Contents 1… …   Wikipedia

• Okamoto–Uchiyama cryptosystem — The Okamoto–Uchiyama cryptosystem was discovered in 1998 by T. Okamoto and S. Uchiyama. The system works in the group , where n is of the form p2q and p and q are large primes. Contents 1 Scheme definition 1.1 Key generation …   Wikipedia

• cryptology — cryptologist, n. cryptologic /krip tl oj ik/, cryptological, adj. /krip tol euh jee/, n. 1. cryptography. 2. the science and study of cryptanalysis and cryptography. [1635 45; < NL cryptologia. See CRYPTO , LOGY] * * * Introduction …   Universalium