METHOD AND SYSTEM CONTROLLING ACCESS TO A RESOURCE

专利名称：METHOD AND SYSTEM CONTROLLING

ACCESS TO A RESOURCE RESTRICTED TOCERTAIN TIME SLOTS, THE ACCEDING ANDACCESSED RESOURCES NOT HAVING A REALTIME CLOCK

发明人：CLERC, FABRICE,GIRAULT, MARC申请号：EP00900664.4申请日：20000126公开号：EP1149361A1公开日：20011031

摘要：The invention concerns a method for controlling access to an electronic key foran electronic lock, within a predetermined time slot, which consists in: previous to allattempt at accessing, storing in the lock a control time value (VHS), delivered by a realtime clock of an external validating entity; then, at each accessing attempt, in the key,reading a time slot (PH); storing a testing time value (VHC), delivered by the validatingentity; transmitting from the key to the lock the time value (PH) and the testing timevalue (VHC); in the lock, verifying the conformity of the testing time value (VHC) with thetime value (PH), and with the control time value VHS); in case of conformity, allowingaccess, and updating the control time value (VHS), from the transmitted testing timevalue (VHC); in case there is no conformity, access is prohibited.

申请人：LA POSTE

地址：4, Quai du Point du Jour 92777 Boulogne Billancourt Cédex FR

国籍：FR

代理机构：Loisel, Bertrand

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