Scan-based attack on the LED block cipher using scan signatures

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)

    Abstract

    LED (Light Encryption Device) block cipher, one of lightweight block ciphers, is very compact in hardware. Its encryption process is composed of AES-like rounds. Recently, a scan-based side-channel attack is reported which retrieves the secret information inside the cryptosystem utilizing scan chains, one of design-for-test techniques. In this paper, a scan-based attack method on the LED block cipher using scan signatures is proposed. In our proposed method, we focus on a particular 16-bit position in scanned data obtained from an LED LSI chip and retrieve its secret key using scan signatures. Experimental results show that our proposed method successfully retrieves its 64-bit secret key using 73 plaintexts on average if the scan chain is only connected to the LED block cipher. These experimental results also show the key is successfully retrieved even if the scan chain includes additional some 4000 1-bit registers.

    Original languageEnglish
    Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1460-1463
    Number of pages4
    ISBN (Print)9781479934324
    DOIs
    Publication statusPublished - 2014
    Event2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014 - Melbourne, VIC
    Duration: 2014 Jun 12014 Jun 5

    Other

    Other2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
    CityMelbourne, VIC
    Period14/6/114/6/5

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    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Fujishiro, M., Yanagisawa, M., & Togawa, N. (2014). Scan-based attack on the LED block cipher using scan signatures. In Proceedings - IEEE International Symposium on Circuits and Systems (pp. 1460-1463). [6865421] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2014.6865421