Patent ID: 8086861
Filing Date: 2011-12-27
Classification: G06F,H04L

Abstract:
1. An information processing terminal that provides a plurality of notified parties with notification of accumulation of entries indicating data that shows a status change, the information processing terminal comprising: a cumulative storage section that holds respective cumulative hashes of entries corresponding to each of the plurality of notified parties, wherein the respective cumulative hashes are used for detecting tampering of a log of an entry; a multi-log measurement section that commands to update, on the basis of one entry, the respective cumulative hashes corresponding to the plurality of notified parties held in the cumulative storage section; and a verification request section that transmits to a particular notified party from the plurality of notified parties data containing data made by affixing a digital signature to a particular cumulative hash from the respective cumulative hashes held in the cumulative storage section, wherein the particular cumulative hash corresponds to the particular notified party.