Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC

Sermin Kocaman

doi:10.55859/ijiss.1719283

Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC

Abstract

Since traditional cryptographic algorithms often fall short in resource-constrained environments due to their high computational complexity and memory requirements, lightweight cryptography has emerged as a practical alternative. Recent advancements in lightweight block ciphers have led to the proposal of the Industrial Internet of Things Block Cipher (IIoTBC) for applications within the Industrial Internet of Things, where computational resources and energy are constrained. IIoTBC is a 64-bit block cipher algorithm that offers two design alternatives — IIoTBC-A for 8-bit microcontrollers and IIoTBC-B for 16-bit microcontrollers — allowing it to be tailored to different hardware specifications. The designers gave a 13-round impossible differential path of IIoTBC; however, the lower bounds of the number of active S-boxes along with their corresponding probability in differential cryptanalysis were not disclosed, which are critical for evaluating the cipher’s overall resistance to such attacks. This paper presents a Mixed Integer Linear Programming-based differential cryptanalysis of the IIoTBC algorithm, incorporating exact probabilities in addition to the number of minimum active S-boxes. The analysis identifies a differential characteristic with a probability of 2^{-52} over 15-round. To enhance the structural evaluation with the cipher’s cryptographic randomness, the Strict Avalanche Criterion test also complements the analysis. These combined analyses offer valuable insights into the security posture of the cipher and its reliability for practical applications.

Keywords

References

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Details

Primary Language

English

Subjects

Cryptography

Journal Section

Research Article

Authors

Sermin Kocaman ^*
0000-0001-8334-8587
Türkiye

Publication Date

September 29, 2025

Submission Date

June 13, 2025

Acceptance Date

August 20, 2025

Published in Issue

Year 2025 Volume: 14 Number: 3

DOI

https://doi.org/10.55859/ijiss.1719283

IZ

https://izlik.org/JA39RX88XC

Cite

RIS / Bibtex

APA

Kocaman, S. (2025). Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC. International Journal of Information Security Science, 14(3), 1-14. https://doi.org/10.55859/ijiss.1719283

AMA

1.Kocaman S. Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC. IJISS. 2025;14(3):1-14. doi:10.55859/ijiss.1719283

Chicago

Kocaman, Sermin. 2025. “Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC”. International Journal of Information Security Science 14 (3): 1-14. https://doi.org/10.55859/ijiss.1719283.

EndNote

Kocaman S (September 1, 2025) Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC. International Journal of Information Security Science 14 3 1–14.

IEEE

[1]S. Kocaman, “Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC”, IJISS, vol. 14, no. 3, pp. 1–14, Sept. 2025, doi: 10.55859/ijiss.1719283.

ISNAD

Kocaman, Sermin. “Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC”. International Journal of Information Security Science 14/3 (September 1, 2025): 1-14. https://doi.org/10.55859/ijiss.1719283.

JAMA

1.Kocaman S. Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC. IJISS. 2025;14:1–14.

MLA

Kocaman, Sermin. “Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC”. International Journal of Information Security Science, vol. 14, no. 3, Sept. 2025, pp. 1-14, doi:10.55859/ijiss.1719283.

Vancouver

1.Sermin Kocaman. Differential Cryptanalysis and Cryptographic Randomness Evaluation of a Lightweight Block Cipher IIoTBC. IJISS. 2025 Sep. 1;14(3):1-14. doi:10.55859/ijiss.1719283