| Abstract |
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Speck family of lightweight block cipher was publicly released by National Security Agency (NSA), USA in June 2013. Speck has been designed with ten instances which provides excellent performance in both hardware and software. Speck is optimized for performance on microcontrollers. This paper will present the result of randomness testing using NIST statistical test suite for SPECK cipher family, which are Speck128/128, Speck128/192, and Speck128/256. Nine data categories are applied to generate the input sequence (either plaintext or key) for each algorithm. Randomness is important for cryptography module to ensure that the cipher is unpredictable before it becomes available. From the analysis conducted, some failures were identified in some data categories. |
