Journal of the Korea Society of Computer and Information (한국컴퓨터정보학회논문지)

Korean Society of Computer Information (한국컴퓨터정보학회)
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Software Implementation of Lightweight Block Cipher CHAM for Fast Encryption

  • Kim, Taeung (Division of Business Administration, Chonbuk National University) ;
  • Hong, Deukjo (Dept. of Information & Technology Engineering, Chonbuk National University)
  • Received : 2018.07.30
  • Accepted : 2018.10.05
  • Published : 2018.10.31
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Abstract

CHAM is a lightweight block cipher, proposed in ICISC 2017. CHAM-n/k has the n-bit block and the k-bit key, and designers recommend CHAM-64/128, CHAM-128/128, and CHAM-128/256. In this paper, we study how to make optimal software implementation of CHAM such that it has high encryption speed on CPUs with high computing power. The best performances of our CHAM implementations are 1.6 cycles/byte for CHAM-64/128, 2.3 cycles/byte for CHAM-128/128, and 3.8 cycles/byte for CHAM-128/256. The comparison with existing software implementation results for well-known block ciphers shows that our results are competitive.

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References

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