| 摘要 |
<p>Predetermined information, correlated with the attribute information of an entity, is used as the secret key for enciphering in the public key cipher system or as the secret key for deciphering the enciphered information, thereby enabling to certify the adequacy of the enciphering or deciphering entity at the destination or source of communication. Also predetermined information, correlated with the attribute information of an entity, is used as the public key for enciphering in the public key cipher system or as the public key for deciphering the enciphered information, thereby enabling to certify the adequacy of the entity at the destination or source of communication, at the enciphering or deciphering side. <IMAGE></p> |
