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EUROCRYPT
2000
Springer
13 years 8 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
FSE
2004
Springer
130views Cryptology» more  FSE 2004»
13 years 10 months ago
Cryptanalysis of a Message Authentication Code due to Cary and Venkatesan
A cryptanalysis is given of a MAC proposal presented at CRYPTO 2003 by Cary and Venkatesan. A nice feature of the CaryVenkatesan MAC is that a lower bound on its security can be pr...
Simon R. Blackburn, Kenneth G. Paterson
ICICS
2004
Springer
13 years 10 months ago
On Some Weak Extensions of AES and BES
In 2002, Murphy and Robshaw introduced an extension BES of AES and argued this could compromise the security of AES. We introduce here two block-ciphers CES and Big-BES that are so...
Jean Monnerat, Serge Vaudenay