[Resource Topic] 2011/345: LBlock: A Lightweight Block Cipher *

Welcome to the resource topic for 2011/345

Title:
LBlock: A Lightweight Block Cipher *

Authors: Wenling Wu, Lei Zhang

Abstract:

In this paper, we propose a new lightweight block cipher called LBlock. Similar to many other lightweight block ciphers, the block size of LBlock is 64-bit and the key size is 80-bit. Our security evaluation shows that LBlock can achieve enough security margin against known attacks, such as differential cryptanalysis, linear cryptanalysis, impossible differential cryptanalysis and related-key attacks etc. Furthermore, LBlock can be implemented efficiently not only in hardware environments but also in software platforms such as 8-bit microcontroller. Our hardware implementation of LBlock requires about 1320 GE on 0.18 \mu m technology with a throughput of 200 Kbps at 100 KHz. The software implementation of LBlock on 8-bit microcontroller requires about 3955 clock cycles to encrypt a plaintext block.

ePrint: https://eprint.iacr.org/2011/345

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