| 摘要 |
PROBLEM TO BE SOLVED: To effectively prevent an authenticated body from being forged, to facilitate the maintenance, and to evade complexity of the structure of, specially, the authenticated body side by collating feature data with physical features which are read at the time of authentication and deciding whether or not the authenticated body is genuine or false according to the respective matching results. SOLUTION: When a card 4 to be authenticated is inserted into a card reader 3, issue device sign data 4c, feature data 4C, etc., stored on a magnetic stripe 45 are read out and physical features are read as feature data 4D' out of a reference area 43 along a read track set on the card reader 3. The authentication device sign data 2C are deciphered with authentication device open key data 1B and collated with issue device open key data 2B. Issue device sign data 4C are deciphered with the issue device open key data 2B and collated with feature data 4D. The feature data 4D' and feature data 4D are collated with each other. When the respective collated results meet specific conditions, it is decided that the card 4 is a regular card. |
