| 摘要 |
<p>A message authorization system in which a sender sub-system (101) and a verifier sub-system (102) each have inherent secret information and inherent public information set corresponding to the secret information, the sender sub-system (101) including an authorization data producing unit (12) for producing authorization data dependent on the public information of the verifier sub-system and the secret information of the sender sub-system (101), and the verifier sub-system (102) including a data verification unit (22) for verifying authorization data received jointly with an electronic document from the sender sub-system based on the public information of the sender sub-system (101). <IMAGE></p> |
