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Simon and Speck Lightweight Block Ciphers for Internet of Things: A Review

P. T. Poornendhu

Abstract


Now-a-days Internet of Things plays a major role in our day-to-day life. The information is to be secured in such an environment confidentially without any security attacks. The U.S. National Security Agency (NSA) developed the Simon and Speck families of lightweight block ciphers as an aid for securing applications in very constrained environments where AES may not be suitable. Simon and Speck, are normally comes in a variety of widths and key sizes. While many lightweight block ciphers exist, most were designed to perform well on a single platform and were not meant to provide high performance across a range of devices. The aim of Simon and Speck is to fill the need for secure, flexible, and analyzable lightweight block ciphers. Both perform exceptionally well across the full spectrum of lightweight applications, but Simon is tuned for optimal performance in hardware, and Speck for optimal performance in software. Simplicity, security, and flexibility are ever-present yet conflicting goals in cryptographic design. These constraints on IOT enabled devices results in the emergence of a new field, Lightweight Cryptography. Recently a number of software and hardware implementation of lightweight ciphers are designed for IoT applications. These are broadly classified as Hash functions, Stream ciphers, and block ciphers. Software implementations have lower cost and provide more flexibility on manufacturing and maintenance.

 

Keywords: Block ciphers, IoT, ciphers, lightweight cryptography (LWC)


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References


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