Patent ID: 8490155
Filing Date: 2013-07-16
Classification: G06F

Abstract:
1. A computer implemented method of detecting a duplication of a secure micro, the method comprising: providing a processor and a memory, generating by the processor authentication time difference information associated with a value of a difference between a time when a host is finally authenticated in a first address and a time when the host is authenticated in a second address; comparing by the processor the authentication time difference information with a first reference value and a second reference value, the second reference value being less than the first reference value; and determining by the processor whether the secure micro is duplicated based on a result of the comparing; and wherein the determining whether the secure micro is duplicated is done prior to the host receiving access to any program, wherein when the secure micro is determined to be duplicated based on the result of the comparing, then the secure micro of each authenticated host is denied a program access authority of the secure micro, and wherein when the secure micro has been determined to be duplicated, then the time for the host of the first address to be authenticated with an authentication proxy (AP) server is greater than the time for the host of the second address to be authenticated with the (AP) server, and wherein, when the value of the authentication time difference information is between the first reference value and the second reference value, the determining collects identifications (IDs) of the secure micro, and determines whether the secure micro is duplicated based on a number of same collected IDs of the secure micro, and wherein the second reference value is set to be less than an average time, and the average time is an average value of a time from when power is supplied to the host to when authentication of the host is completed.