Abstract
PIPO is a lightweight block cipher and shows better performance than other block cipher algorithms on low-end microcontrollers (e.g. 8-bit AVR). In addition, PIPO block cipher can utilize the efficient masking method by minimizing the number of non-linear operations. Therefore, PIPO block cipher can prevent side-channel attacks, efficiently. In this paper, we propose an efficient first-order masking technique using a 2-byte random mask by taking an advantage of PIPO block cipher. We present a new OR operation masking technique. Among functions of PIPO, the masked S-layer with 23 AND operations, 5 OR operations, and 46 XOR operations is used. Operations of PIPO block cipher are implemented in AVR assembly languages. The proposed implementation showed 1.5\(\times \) faster performance enhancements compared to the unprotected C implementation in the encryption process and 2.2\(\times \) faster performance enhancements compared to the unprotected optimized assembly implementation.
This work was partly supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No. 2018-0-00264, Research on Blockchain Security Technology for IoT Services, 25%) and this work was partly supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2020R1F1A1048478, 25%) and this work was partly supported by Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government (MSIT) (No. 2021-0-00540, Development of Fast Design and Implementation of Cryptographic Algorithms based on GPU/ASIC, 25%) and this work was partly supported by Institute for Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government (MSIT) (<Q|Crypton>, No. 2019-0-00033, Study on Quantum Security Evaluation of Cryptography based on Computational Quantum Complexity, 25%).
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References
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Kim, H. et al. (2021). Masked Implementation of PIPO Block Cipher on 8-bit AVR Microcontrollers. In: Kim, H. (eds) Information Security Applications. WISA 2021. Lecture Notes in Computer Science(), vol 13009. Springer, Cham. https://doi.org/10.1007/978-3-030-89432-0_14
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DOI: https://doi.org/10.1007/978-3-030-89432-0_14
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