WEWORC
2007
13 years 5 months ago
2007
The cryptanalysis of the cryptographic hash function Tiger has, until now, focussed on finding collisions. In this paper we describe a preimage attack on the compression function ...
WEWORC
2007
13 years 5 months ago
2007
Abstract. Courtois, Finiasz and Sendrier proposed in 2001 a practical code-based signature scheme. We give a rigorous security analysis of a modified version of this scheme in the...
WEWORC
2007
13 years 5 months ago
2007
The stream ciphers Py, Pypy and Py6 were designed by Biham and Seberry for the ECRYPT-eSTREAM project in 2005. The ciphers were promoted to the ‘Focus’ ciphers of the Phase II ...
WEWORC
2007
13 years 5 months ago
2007
This paper presents two key-recovery attacks against the last modi cation to Achterbahn-128/80 proposed by the authors at SASC 2007 due to the previous attacks. The 80-bit variant,...