International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

J. Rosenthal

Publications

Year
Venue
Title
2006
EPRINT
Cryptanalysis of the CFVZ cryptosystem
J. J. Climent E. Gorla J. Rosenthal
The paper analyzes a new public key cryptosystem whose security is based on a matrix version of the discrete logarithm problem over an elliptic curve. It is shown that the complexity of solving the underlying problem for the proposed system is dominated by the complexity of solving a fixed number of discrete logarithm problems in the group of an elliptic curve. Using an adapted Pollard rho algorithm it is shown that this problem is essentially as hard as solving one discrete logarithm problem in the group of an elliptic curve.

Coauthors

J. J. Climent (1)
E. Gorla (1)