LBlock: a lightweight block cipher. 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 $0.18mu$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.

This software is also peer reviewed by journal TOMS.

References in zbMATH (referenced in 22 articles , 1 standard article )

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  1. Guo, Jian; Jean, Jérémy; Nikolić, Ivica; Sasaki, Yu: Extended meet-in-the-middle attacks on some Feistel constructions (2016)
  2. Karakoç, F.; Demirci, H.; Harmancı, A.E.: AKF: a key alternating Feistel scheme for lightweight cipher designs (2015)
  3. Lallemand, Virginie; Naya-Plasencia, María: Cryptanalysis of full sprout (2015)
  4. Wu, Wenling; Zhang, Lei; Yu, Xiaoli: The DBlock family of block ciphers (2015)
  5. Zhang, Huiling; Wu, Wenling: Structural evaluation for generalized Feistel structures and applications to LBlock and TWINE (2015)
  6. Blondeau, Céline; Bogdanov, Andrey; Wang, Meiqin: On the (in)equivalence of impossible differential and zero-correlation distinguishers for Feistel- and skipjack-type ciphers (2014)
  7. Bulygin, Stanislav; Walter, Michael; Buchmann, Johannes: Full analysis of PRINTcipher with respect to invariant subspace attack: efficient key recovery and countermeasures (2014)
  8. Dong, Le; Wu, Wenling; Wu, Shuang; Zou, Jian: Known-key distinguishers on type-1 Feistel scheme and near-collision attacks on its hashing modes (2014)
  9. Luo, Yiyuan; Lai, Xuejia; Wu, Zhongming; Gong, Guang: A unified method for finding impossible differentials of block cipher structures (2014)
  10. Soleimany, Hadi; Nyberg, Kaisa: Zero-correlation linear cryptanalysis of reduced-round LBlock (2014)
  11. Sun, Siwei; Hu, Lei; Wang, Peng; Qiao, Kexin; Ma, Xiaoshuang; Song, Ling: Automatic security evaluation and (related-key) differential characteristic search: application to SIMON, PRESENT, Lblock, DES(L) and other bit-oriented block ciphers (2014)
  12. Wang, Yanfeng; Wu, Wenling: Improved multidimensional zero-correlation linear cryptanalysis and applications to lblock and TWINE (2014)
  13. Wen, Long; Wang, Mei-Qin; Zhao, Jing-Yuan: Related-key impossible differential attack on reduced-round LBlock (2014)
  14. Bogdanov, Andrey; Boura, Christina; Rijmen, Vincent; Wang, Meiqin; Wen, Long; Zhao, Jingyuan: Key difference invariant bias in block ciphers (2013)
  15. Karakoç, F.; Demirci, H.; Harmancı, A.E.: Biclique cryptanalysis of lblock and TWINE (2013)
  16. Sasaki, Yu; Wang, Lei: Meet-in-the-middle technique for integral attacks against Feistel ciphers (2013)
  17. Suzaki, Tomoyasu; Minematsu, Kazuhiko; Morioka, Sumio; Kobayashi, Eita: TWINE: a lightweight block cipher for multiple platforms (2013)
  18. Walter, Michael; Bulygin, Stanislav; Buchmann, Johannes: Optimizing guessing strategies for algebraic cryptanalysis with applications to EPCBC (2013)
  19. Liu, Ya; Gu, Dawu; Liu, Zhiqiang; Li, Wei: Impossible differential attacks on reduced-round LBlock (2012)
  20. Minier, Marine; Naya-Plasencia, María: A related key impossible differential attack against 22 rounds of the lightweight block cipher LBlock (2012)

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