106 search results - page 14 / 22 » Cryptanalysis of Koyama Scheme |
ASIACRYPT
2007
Springer
14 years 4 months ago
2007
Springer
Due to recent breakthroughs in hash functions cryptanalysis, some new hash schemes have been proposed. GRINDAHL is a novel hash function, designed by Knudsen, Rechberger and Thomse...
CRYPTO
2007
Springer
14 years 4 months ago
2007
Springer
In this paper, we present a practical attack on the signature scheme SFLASH proposed by Patarin, Goubin and Courtois in 2001 following a design they had introduced in 1998. The att...
IJBC
2006
13 years 9 months ago
2006
As a powerful cryptanalysis tool, the method of return-map attacks can be used to extract secret messages masked by chaos in secure communication schemes. Recently, a simple defen...
COMPSEC
2004
13 years 9 months ago
2004
In a (t, n) threshold proxy signature scheme, which is a variant of the proxy signature scheme, the proxy signature key is shared among a group of n proxy signers delegated by the ...
ICISC
2007
13 years 11 months ago
2007
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...