Ivan Damgård

Regardez d'autres dictionnaires:

• Ivan Damgård — is a professor at the University of Aarhus in Denmark. He researches and teaches cryptography and is known among other things for the Merkle Damgård construction used in most modern cryptographic hash functions such as SHA 1 and MD5. He… …   Wikipedia

• Ivan Damgard — Ivan Damgård Ivan Damgård, cryptologue danois et professeur à l Université de Aarhus (Danemark). Fondateur de la société Cryptomathic, il est plus connu pour la construction qui porte son nom, la construction de Merkle Damgård, une structure… …   Wikipédia en Français

• Damgård–Jurik-Kryptosystem — Das Damgård–Jurik Verschlüsselungssystem ist ein semantisch sicherer, asymmetrischer Verschlüsselungsalgorithmus. Es wurde 2001 an der Konferenz PKC von den beiden Kryptographen Ivan Damgård und Mads Jurik vorgestellt[1]. Das Verfahren ist… …   Deutsch 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-Damgård construction — In cryptography, the Merkle Damgård construction or Merkle Damgård hash function is a method to build cryptographic hash functions. All popular hash functions follow this generic construction.A cryptographic hash function must be able to process… …   Wikipedia

• Merkle–Damgård construction — In cryptography, the Merkle–Damgård construction or Merkle–Damgård hash function is a method to build collision resistant cryptographic hash functions from collision resistant one way compression functions.[1]:145 This construction was used in… …   Wikipedia

• One-way compression function — In cryptography, a one way compression function is a function that transforms two fixed length inputs to an output of the same size as one of the inputs. The transformation is one way , meaning that it is difficult given a particular output to… …   Wikipedia

• Claw-free permutation — In mathematical and computer science field of cryptography, a group of three numbers (x,y,z) is said to be a claw of two permutations f0 and f1 if f0(x) = f1(y) = z. A pair of permutations f0 and f1 are said to be claw free if there is no… …   Wikipedia

• Threshold cryptosystem — In cryptography, a cryptosystem is called a threshold cryptosystem , if in order to decrypt an encrypted message a number of parties exceeding a threshold is required to cooperate in the decryption protocol. The message is encrypted using a… …   Wikipedia

• Damgaard-Jurik cryptosystem — The Damgård Jurik cryptosystem [Ivan Damgård, Mads Jurik: [http://www.brics.dk/RS/00/45/ A Generalisation, a Simplification and Some Applications of Paillier s Probabilistic Public Key System] . Public Key Cryptography 2001: 119 136] is a… …   Wikipedia