@misc{cryptoeprint:2002:139, author = {Maria Isabel Gonzalez Vasco and Rainer Steinwandt }, title = {Reaction Attacks on Public Key Cryptosystems Based on the Word Problem }, howpublished = {Cryptology ePrint Archive, Report 2002/139}, year = {2002}, url = {http://eprint.iacr.org/2002/139}, }