Patent ID: 7649440
Filing Date: 2010-01-19
Classification: H04L,H04W

Abstract:
1. An apparatus for unifying multiple radio frequency identifications (RFIDs), the apparatus comprising: a data arithmetic operator collecting RFIDs of at least one RFID tags, storing the collected RFIDs, and repeatedly performing the collection and storage when a time out event occurs; a hash arithmetic operator concatenating the RFIDs, hashing the concatenated RFIDs, and outputting a hashed single value; a random number generator generating a random number used as an encryption factor to public-key-encrypt the single value; an RFID tag processor controlling locking/unlocking of the RFID tags; a public key arithmetic operator public-key-encrypting the single value using a predetermined public key and the random number as encryption factors and outputting a cipher text; and a radio frequency communicator converting the cipher text into a radio signal and sending the radio signal to a radio section.