| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic transaction system, which is used by companies in electronic transaction and provides company evaluation information on the companies to their transaction partners. SOLUTION: An electronic transaction system, which is user by companies in electronic transaction and provides company evaluation information on the companies to their transaction partners, is provided. The electronic transaction system comprises an evaluator certificate acquiring means of acquiring an evaluator certificate, which is authorized by a certificator who certificates that an evaluator who created company evaluation information belongs to a public center, and a company certificate acquiring means of acquiring a company certificate, which certificates correctness of the evaluator certificate by authorizing a public key of the company. In addition, the electronic transaction system also comprises a certificate providing means of providing the evaluator certificate and the company certificate to a transaction partner. |
