Abstract
The SMS4 cryptosystem has been used in the Wireless LAN Authentication and Privacy Infrastructure (WAPI) standard for providing data confidentiality in China. So far, reliability has not been considered a primary objective in original version. However, a single fault in the encryption/decryption process can completely change the result of the cryptosystem no matter the natural or malicious injected faults. In this paper, we proposed low-cost structure-independent fault detection scheme for SMS4 cryptosystem which is capable of performing online error detection and can detect a single bit fault or odd multiple bit faults in coverage of 100 percent. Finally, the proposed techniques have been validated on Virtex-7 families FPGA platform to analyze its power consumption, overhead and time delay. It only needs 85 occupied Slices and 8.72mW to run a fault-tolerant scheme of SMS4 cryptosystem with 0.735ns of detection delay. Our new scheme increases in minimum redundancy to enhance cryptosystem’s reliability and achieve a better performance compared with the previous scheme.
Highlights
With the rapid development of network and digitization, the information protection has nowadays became an absolutely requirement
In this paper we did some research on the SMS4 cryptosystem of fault detection
We showed the traditional scheme of error detective method on SMS4 and presented a new fault detection scheme based on parity code
Summary
With the rapid development of network and digitization, the information protection has nowadays became an absolutely requirement. A scheme is put forward in [7], which used reverse functions to recover the original input for the encryption/decryption process; [8,9] can applied to the internal function, round function, or entire encryption process levels, based on the hardware-redundant-based concurrent error detection schemes. Another category of fault detection methods is based on parity codes [10,11,12].
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