AUTHENTICATED RADIO FREQUENCY IDENTIFICATION AND KEY DISTRIBUTION SYSTEM THEREFOR

摘要

An authenticated RFID system is provided that uses elliptic curve cryptog raphy (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and ECPVS can be used to hide a po rtion of the RFID tag that contains sensitive product identifying informatio n. As a result, smaller tags can be used or multiple signatures can be writt en at different stages in a manufacturing or supply chain. A key management system is used to distribute the verification keys and aggregate signature s chemes are also provided for adding multiple signatures to the RFID tags, fo r example in a supply chain.