Research On Security IC Card Chip Design Technology Based On Lightweight Cryptography

With the extensive application of IC card in the financial,medical,social security,identity authentication and other fields,IC card processing and storing more and more information that is also become more and more important.Once appear to leak sensitive information,its damage is becoming more and more serious.At present,there are still some problems in the research of IC card information security,which cannot solve the security threats brought by IC card data storage and data transmission effectively.In view of the above problems,this article carried out research work based on lightweight password of security IC card,the completion of the main work are as follows:(1)Based on the analysis of the existing IC card's development needs,the paper studied the security threats faced by IC card information storage and transmission.Combining with the reality of IC card itself,this paper puts forward the overall architecture of security IC card based on lightweight password,The system module,system control,storage structure and 7816 communication module are designed and implemented,and the function module of the security IC card is designed and implemented under the premise that the IC card is limited to the design resources.In addition,the design of each module is optimized.(2)Based on the analysis of the existing IC card secure storage and transmission scheme,this paper puts forward the secure storage mechanism based on remote key management and the bus safe transmission mechanism based on sequence code for the problem of imperfect key management and security of bus protection.The secure storage mechanism generates the storage key by using the password and the random number generated in the IC card by calling the password algorithm Keccak-f [200] and encrypts the plaintext data in the IC card using the lightweight password algorithm PRESENT by the storage key.Secure transmission mechanism constructed the bus scrambling module by using the sequence code Trivium to structure the encrypted communication of the internal data of the IC card,thus ensured the safe transmission of the data.(3)On the basis of the realization of the security IC card,a simulation verification platform is built and the functional modules of the security IC card are simulated and verified.The performance of the safety memory module and the bus safety transmission module designed in this paper are analyzed.The overall function of the chip is verified.Based on the analysis and research of data storage security and transmission security in IC card,this paper designed and implemented the secure storage mechanism based on key remote storage and the bus security transmission mechanism based on sequence cipher,which solves the problem that the existing IC card key management is not perfect and bus protection is low.