Abstract
In these day, demands of light-weight block cipher algorithm which can support various platform, architecture and block/key size efficiently have been increasing. The N.S.A (National Security Agency) proposed SIMON and SPECK block ciphers in 2013. SIMON and SPECK support various block size such as 16, 32, 64-bit and key size such as 64, 96, 128, and so on. There are also a lot of researches on implementation of SIMON and SPECK block cipher on various platform and architecture such as on ASIC, AVR(8-bit), MSP430(16-bit), ARM(32-bit), and Intel core. We propose efficient ARM-NEON implementation, optimization methods and implementation results of SIMON and SPECK block cipher by using ARM- NEON SIMD techniques. With these methods, we enhance performance of SIMON and SPECK by 30.3 and 68.9%, compared to previous results respectively
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