CAN Crypto FPGA Chip to Secure Data Transmitted Through CAN FD Bus Using AES-128 and SHA-1 Algorithms with A Symmetric Key

Paper #:
  • 2017-01-1612

Published:
  • 2017-03-28
DOI:
  • 10.4271/2017-01-1612
Citation:
Doan, T. and Ganesan, S., "CAN Crypto FPGA Chip to Secure Data Transmitted Through CAN FD Bus Using AES-128 and SHA-1 Algorithms with A Symmetric Key," SAE Technical Paper 2017-01-1612, 2017, doi:10.4271/2017-01-1612.
Pages:
8
Abstract:
Robert Bosch GmBH proposed in 2012 a new version of communication protocol named as Controller area network with Flexible Data-Rate (CANFD), that supports data frames up to 64 bytes compared to 8 bytes of CAN. With limited data frame size of CAN message, and it is impossible to be encrypted and secured. With this new feature of CAN FD, we propose a hardware design - CAN crypto FPGA chip to secure data transmitted through CAN FD bus by using AES-128 and SHA-1 algorithms with a symmetric key. AES-128 algorithm will provide confidentiality of CAN message and SHA-1 algorithm with a symmetric key (HMAC) will provide integrity and authentication of CAN message. The design has been modeled and verified by using Verilog HDL – a hardware description language, and implemented successfully into Xilinx FPGA chip by using simulation tool ISE (Xilinx). Verification are done by applying direct test bench with National Institute of Standards and Technology (NIST) test vectors for AES-128, SHA-1, CAN crypto encryption and decryption cores. The performance of CAN crypto encryption and decryption cores show that they are suitable to be embedded into ECUs for securing data transmitted through CAN FD bus.
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