![]() In particular, LEA(Lightweight Encryption Algorithm) is the lightweight symetric block cipher proposed by NSRI(National Security Research Institute) in 2013. ![]() This system has been published in various systems such as DES(Data Encryption Standard), IDEA(International Data Encryption Algorithm), SKIPJACK, MISTY, Camellia, SEED, LEA(Lightweight Encryption Algorithm) and AES(Advanced Encryption Standard) algorithm. The Symmetric cryptography system to be discussed is a system which the key for encryption and decryption is identical. It is expected that the development of IoT service will inflate the chance of potential security threats, as the IoT service utilizes applications and heterogeneous network through smart devices or sensors. In a world where the personal portable mobile devices such as PDAs(Personal Data Assistant) and cell phones are evolving rapidly, information security has become inarguably the most important issue than ever. With present network system, it is possible to transmit various formats of data including e-mail, picture, videos and voices.
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