ENCRYPTED IMAGE WITH MATRYOSHKA STRUCTURE, AND MUTUAL AGREEMENT AUTHENTICATION SYSTEM AND METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an authentication system capable of preventing leakage of authentication information and monitoring illegal use of the information in real time.

SOLUTION: A great number of encrypted images are embedded in an encrypted image to perform a sequential authentication procedure. The encrypted image used for authentication comprises: a first encrypted image which can be opened by only a server of any one layer of the authentication system having a plurality of layers; and a second encrypted image which can be opened by only a server of another layer distinguished from the layer. One sealed encrypted image of the first and second encrypted images is embedded and sealed in the other encrypted image.

COPYRIGHT: (C)2010,JPO&INPIT