The RFID Security Mechanism Based On AES And RSA Encrypt Algorithm

RFID(Radio Frequency Identification) technology is an automatic identification technology which is rising in 60's and being more maturate in 90's,it is a non-contact data acquisition and automatic recognition technology.Contract with other automatic identification technology,RFID has advantages of speed,stability,large storage space, and good security performance.With the promotion of "Golden Card Project", intelligent IC card will be widely used in all areas of the national economy,such as finance,telecommunications,medical,insurance and transportation etc.But because of the openness RFID communication,RFID application take a risk of being attacked,security and privacy issues become a constraint bottleneck to its further development.Based on the analysis of the RFID attacks and its countermeasures,a security mechanism which can enhance the smart card security performance is proposed.This mechanism combines AES(Advanced Encryption Standard) and RSA encryption algorithm,take the advantage of symmetric key encryption algorithm and non -symmetric encryption algorithm respectively,through encryption of AES keys by RSA and the RSA public key by authorized client's RSA private key,protect the important information stored in the smart card,meanwile keep the smart card out of illegal read by unauthorized readers.Firstly,this paper introduces the basic working principle RFID system,discusses the RFID code technology and information integrity technology,introduces the current prevalent contactless smart card-Mifare 1 Series and its supported international standards;then put forward the entire RFID hardware implementation of encryption systems,including smart card,reader and SAM encryption module; Secondly,system software design,including the operation of the smart card processes and the MF RC500 substrate function,LCD driver design and SAM module interface program design;Lastly,focus on the realization of encryption mechanisms and system's FPGA verification result.Through the FPGA simulation verification,we can judge this encryption mechanism meets the actual requirement.The innovations in this thesis are that:take advantage of Mifare 1 smart card's own security feature,accompany with the re-encryption to the data stored on the smart card by embedded SAM module,this security mechanism enhances the entire RFID system security features,c a good solution to the RFID system security and privacy issues.