Cryptology ePrint Archive: Report 2020/738


Subhadeep Banik and Avik Chakraborti and Tetsu Iwata and Kazuhiko Minematsu and Mridul Nandi and Thomas Peyrin and Yu Sasaki and Siang Meng Sim and Yosuke Todo

Abstract: In this article, we propose GIFT-COFB, an Authenticated Encryption with Associated Data (AEAD) scheme, based on the GIFT lightweight block cipher and the COFB lightweight AEAD operating mode. We explain how these two primitives can fit together and the various design adjustments possible for performance and security improvements. We show that our design provides excellent performances in all constrained scenarios, hardware or software, while being based on a provably-secure mode and a well analysed block cipher.

Category / Keywords: secret-key cryptography / GIFT, COFB, authenticated encryption, lightweight, lower bound

Date: received 17 Jun 2020

Contact author: giftcofb at googlegroups com

Available format(s): PDF | BibTeX Citation

Version: 20200618:155032 (All versions of this report)

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