AUTHORIZATION METHOD USING CODING MECHANISM AND DISPOSABLE PASSWORD

摘要

PURPOSE: An authorization method using a coding mechanism and a disposable password is provided to carry out an authorization protocol and to supply a writing medium readable with a computer having a program to realize the authorization method, by using an algorithm for generating the disposable password while applying one-way function and the coding mechanism in an authorization system. CONSTITUTION: An authorization method using a coding mechanism and a disposable password has four steps. The first step is that an authorization requester calculates second authorization information by using one-way function receiving user identification information, first stored authorization information and user-related information, and generates a key by generating a random number to code the second authorization information and the random number. The second step is that the authorization requester constructs an authorization message including the authorization information, a resultant value by coding the key, the random number and the user identification information. The third step is that the authorization verifier calculates the second authorization information after receiving the authorization message, and codes the random number and the second authorization information to calculate a key value.