Dynamic password scheme based on quadratic residues
一种基于二次剩余的动态口令算法

Dynamic password based on authentication mechanism for electronic commerce which had an excessive burden of computing and communications and could not control the number and time that each user was entitled to use,the use of complexity of modular square root in quadratic residues,this paper proposed a dynamic password scheme based on quadratic residues to solve these problems.This algorithm had countable and time-bound features,did not require any password or verification table,it could avoid replay attacks...