A Light Weight Cryptographic Solution for 6LoWPAN Protocol Stack

Khairnar, Sushil; Bansod, Gaurav; Dahiphale, Vijay

doi:10.1007/978-3-030-01177-2_71

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…LiCi-2 is a lightweight block cipher that was proposed in 2018 [8]. It adopts a Feistel-type structure.…”

Section: Brief Description On Lici-2mentioning

confidence: 99%

“…After one-round decryption, the difference for the input of the 17th round is ΔL 17 � 0, ΔR 17 � 0. As the differences for subkey RK 16 to RK 9 are all zeros, the difference for the input of the 9th round ΔL 9 � 0, ΔR 9 � 0. e subkey RK 8 will bring in a new difference in RK 8 [21] ; thus the difference for the input of the 8th round is ΔL 8 � 0, ΔR 8 � (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0).…”

Section: (5)mentioning

confidence: 99%

“…Up to now, the security margin on LiCi-1 is enough. To reach better performance, as a successor, LiCi-2 was proposed in 2018 [8]. For LiCi-2, it reduces the total rounds from 31 to 25, and half of the subkeys and a circular shift are omitted for better performance.…”

Section: Introductionmentioning

confidence: 99%

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Related-Key Multiple Impossible Differential Cryptanalysis on Full-Round LiCi-2 Designed for IoT

Zhang

Lai

Wang

et al. 2022

Security and Communication Networks

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LiCi-2 is an ultralightweight block cipher designed for constrained IoT devices. It is a successor of LiCi and has even better performance in both software and hardware implementation. In this paper, based on the idea of related-key multiple impossible differential cryptanalysis, a key recovery attack on full-round LiCi-2 is proposed. First, an interesting property is revealed that, with a single bit difference in the related key, a 10-round differential character with probability of 1 exists on LiCi-2. With an automatic approach, the boundaries of impossible differential distinguishers in terms of single-key setting and related-key setting are explored. Under our construction method, the longest length is 8 rounds for single-key setting and 18 rounds for related-key setting. Finally, based on these 18-round distinguishers, a 25-round key recovery attack is proposed with adding 3 rounds before and 4 rounds after the distinguisher. Our attack needs one related key. The time complexity for our attack is O(2123.44), the memory complexity is O(294), and the data complexity is O(260.68). As far as we know, no full-round attack has previously been reported on LiCi-2.

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“…LiCi-2 is a lightweight block cipher that was proposed in 2018 [8]. It adopts a Feistel-type structure.…”

Section: Brief Description On Lici-2mentioning

confidence: 99%

Section: (5)mentioning

confidence: 99%