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http://dx.doi.org/10.6109/jkiice.2017.21.10.1929

High Speed Implementation of LEA on ARMv8  

Seo, Hwa-jeong (Department of IT Engineering, Hansung University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.10, 2017 , pp. 1929-1934 More about this Journal
Abstract
Lightweight block cipher (Lightweight Encryption Algorithm, LEA), is the most promising block cipher algorithm due to its efficient implementation feature and high security level. The LEA block cipher is widely used in real-field applications and there are many efforts to enhance the performance of LEA in terms of execution timing to achieve the high availability under any circumstances. In this paper, we enhance the performance of LEA block cipher, particularly on ARMv8 processors. The LEA implementation is optimized by using new SIMD instructions namely NEON engine and 24 LEA encryption operations are simultaneously performed in parallel way. In order to reduce the number of memory access, we utilized the all NEON registers to retain the intermediate results. Finally, we evaluated the performance of the LEA implementation, and the proposed implementations on Apple A7 and Apple A9 achieved the 2.4 cycles/byte and 2.2 cycles/byte, respectively.
Keywords
ARMv8; LEA; NEON; Parallel Implementation;
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Times Cited By KSCI : 1  (Citation Analysis)
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