Patent ID: 7272717
Filing Date: 2007-09-18
Classification: H04L

Abstract:
1. A system of authentication in which first and second authentication devices authenticate each other, the first authentication device comprising: first management means for managing experience information of a low experience rank, which is unidirectionally generated from experience information of a high experience rank, and for, when a set of its own experience rank and experience information higher than the managed set of experience rank and experience information is delivered in accordance with an experience, managing the delivered set of experience rank and experience information; first certification means for, when a certification request of the its own experience rank is received from the second authentication device, transmitting corresponding experience information in the first management means to the second authentication device; and first verification means for, when a certification request of an experience rank is sent to the second authentication device, verifying experience information obtained from the second authentication device on the basis of the experience information in the first management means, and the second authentication device comprising: