Patent ID: 8058973
Filing Date: 2011-11-15
Classification: H04L,H04W

Abstract:
1. A radio frequency identification system comprising: a radio frequency identification tag having an identification code and a set of verifiable data stored therein; and a radio frequency identification reader which sends a reading request to the radio frequency identification tag, requesting to read a first portion of the set of verifiable data, wherein the radio frequency identification tag further comprises a controller, which, if the radio frequency identification tag receives the reading request from the radio frequency identification reader, and if a locking operation has not been performed on a second portion of the set of verifiable data, then the controller controls the locking operation to be performed on the second portion of the set of verifiable data, so that, from then on, any data of the second portion of the set of verifiable data cannot be read, wherein the set of verifiable data includes n digital signatures SIG wherein k=n*0.5 if n is even; and k=n*0.5+0.5 or k=n*0.5-0.5 if n is odd.