Browse > Article
http://dx.doi.org/10.6109/jkiice.2015.19.7.1608

An Efficient Hardware Implementation of Lightweight Block Cipher LEA-128/192/256 for IoT Security Applications  

Sung, Mi-Ji (School of Electronic Engineering, Kumoh National Institute of Technology)
Shin, Kyung-Wook (School of Electronic Engineering, Kumoh National Institute of Technology)
Abstract
This paper describes an efficient hardware implementation of lightweight encryption algorithm LEA-128/192/256 which supports for three master key lengths of 128/192/256-bit. To achieve area-efficient and low-power implementation of LEA crypto- processor, the key scheduler block is optimized to share hardware resources for encryption/decryption key scheduling of three master key lengths. In addition, a parallel register structure and novel operating scheme for key scheduler is devised to reduce clock cycles required for key scheduling, which results in an increase of encryption/decryption speed by 20~30%. The designed LEA crypto-processor has been verified by FPGA implementation. The estimated performances according to master key lengths of 128/192/256-bit are 181/162/109 Mbps, respectively, at 113 MHz clock frequency.
Keywords
Lightweight Encryption Algorithm; LEA; IoT Security; Information Security; Secret Key Encryption;
Citations & Related Records
연도 인용수 순위
  • Reference