| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for measuring credibility to some extents without disclosing personal information such as a name, or registering user information in commercial transaction such as auction whose anonymity is high. <P>SOLUTION: A user is able to prove the fact of transaction by himself or herself from data(receipt) electronically signatured in an inter-user transaction history. Also, the user is able to open the evaluation of himself or herself or the other party of transaction as a person concerned with transaction by preparing and disclosing data(evaluation information) electronically signatured by additionally writing the evaluation of the other party of transaction in the receipt, and a third person is able to confirm that the evaluation information has been surely prepared by the person concerned with the transaction from the the electronic signature. In the case of future transaction, the user is able to know the reputation of the other party of transaction by collecting the evaluation information of the other party. Thus, it is possible to much more easily know the credibility of the user by displaying inter-user evaluation functions as a graph by using the collected evaluation information. <P>COPYRIGHT: (C)2007,JPO&INPIT |
