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INDOCRYPT
2005
Springer
13 years 10 months ago
Cryptanalysis of the Quadratic Generator
Let p be a prime and let a and c be integers modulo p. The quadratic congruential generator (QCG) is a sequence (vn) of pseudorandom numbers defined by the relation vn+1 ≡ av2 n...
Domingo Gómez, Jaime Gutierrez, Álva...
ICISC
2007
125views Cryptology» more  ICISC 2007»
13 years 6 months ago
A Cryptanalysis of the Double-Round Quadratic Cryptosystem
In the 80’s Matsumoto and Imai [8] proposed public key cryptosystems based on the difficulty of solving systems of polynomials in several variables. Although these first schemes...
Antoine Scemama
EUROCRYPT
2000
Springer
13 years 9 months ago
A NICE Cryptanalysis
We present a chosen-ciphertext attack against both NICE cryptosystems. These two cryptosystems are based on computations in the class group of non-maximal imaginary orders. More pr...
Éliane Jaulmes, Antoine Joux
ACISP
2007
Springer
13 years 11 months ago
On Building Hash Functions from Multivariate Quadratic Equations
Recent advances in hash functions cryptanalysis provide a strong impetus to explore new designs. This paper describes a new hash function mq-hash that depends for its security on t...
Olivier Billet, Matthew J. B. Robshaw, Thomas Peyr...