@misc{cryptoeprint:2006:075, author = {TOMOHIRO HARAYAMA}, title = {ON THE WEIL SUM EVALUATION OF CENTRAL POLYNOMIAL IN MULTIVARIATE QUADRATIC CRYPTOSYSTEM}, howpublished = {Cryptology ePrint Archive, Report 2006/075}, year = {2006}, url = {http://eprint.iacr.org/2006/075}, }