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The qualification certification methodological null suffering certification person who
The qualification certification methodological null suffering certification person who
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机译：资格认证方法论的空忍者认证人
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摘要
PROBLEM TO BE SOLVED: To realize authentication of qualification with a simple and small program size by much decreasing a processing amount executed by an authenticated party and an authentication party for each authentication phase in a qualification authentication method using variable authentication information and to provide a method for secure authentication immune to tapping on a communication line. ;SOLUTION: A party to be authenticated calculates current authentication and authentication of a succeeding time by using a unidirectional function on the basis of a random number, a user ID and a password, encrypts them by applying exclusive OR to them so that other party than the party to be authenticated cannot cryptanalyze the data, transmits the result to an authentication party together with a user ID of the party to be authenticated to the authentication party. Furthermore, the authentication party receives above 3 information sets from the party to be authenticated, compares a validity confirmation parameter calculated by using the unidirectional function with the authentication parameter registered in a preceding authentication phase on the basis of the current authentication data, discriminates that the current authentication is established when they are coincident and registers the succeeding authentication data as the succeeding authentication parameter.;COPYRIGHT: (C)2001,JPO
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