WEWORC
2007
14 years 20 days 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
14 years 20 days 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
14 years 20 days 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
14 years 20 days 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,...