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H2B: Crypto hash functions based on hybrid ring generators


[ 1 ] Instytut Radiokomunikacji, Wydział Informatyki i Telekomunikacji, Politechnika Poznańska | [ 2 ] Wydział Informatyki i Telekomunikacji, Politechnika Poznańska | [ P ] employee | [ SzD ] doctoral school student

Scientific discipline (Law 2.0)

[2.3] Information and communication technology

Year of publication


Published in

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems

Journal year: 2024 | Journal volume: vol. 43 | Journal number: iss. 2

Article type

scientific article

Publication language


  • bent functions
  • challenge/response-based authentication
  • hybrid ring generators
  • lightweight keyed cryptographic hash functions
  • root of trust

EN Protection of integrated circuits (ICs) against hardware security threats has been tackled by many schemes proposed to mitigate risks associated with an unauthorized access and usage of ICs in general, and intellectual property (IP) cores in particular. Typically, this is accomplished by virtue of hardware roots of trust whose crucial security primitives entail cryptographic hash functions. They provide data integrity services and thus can support the IC authentication protocols employed to counteract potential threats such as untrusted users accessing ICs. However, IC vendors raise concerns regarding the complexity of certain hash functions in terms of area overhead, the impact on the design flow, and testability. These concerns have motivated this work presenting a simple, yet effective, lightweight, scalable cryptographic hash function H2B. It builds on a hybrid ring generator, i.e., an area and time optimized version of a linear feedback shift register, which works in tandem with a nonlinear sequential circuitry whose feedback network comprises bent-like functions. A comprehensive evaluation, including test suits from NIST, show feasibility and efficiency of the proposed scheme and is reported herein.

Pages (from - to)

442 - 455




Ministry points / journal


Impact Factor

2,9 [List 2022]

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