Cryptology ePrint Archive: Report 2021/1574

Ascon PRF, MAC, and Short-Input MAC

Christoph Dobraunig and Maria Eichlseder and Florian Mendel and Martin Schläffer

Abstract: The cipher suite Ascon v1.2 already provides authenticated encryption schemes, hash, and extendable output functions. Furthermore, the underlying permutation is also used in two instances of Isap v2.0, an authenticated encryption scheme designed to provide enhanced robustness against side-channel and fault attacks. In this paper, we enrich the functionality one can get out of Ascon's permutation by providing efficient Pseudorandom Functions (PRFs), a Message Authentication Code (MAC) and a fast short-input PRF for messages up to 128 bits.

Category / Keywords: secret-key cryptography / Pseudorandom function, MAC, Ascon

Date: received 1 Dec 2021

Contact author: ascon at iaik tugraz at

Available format(s): PDF | BibTeX Citation

Version: 20211203:075647 (All versions of this report)

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