Cryptology ePrint Archive: Report 2017/205

ZETA: Towards Tagless Authenticated Encryption

Anindya Shankar Bhandari and Dipanwita Roy Chowdhury

Abstract: Tag-based message authentication is a popular cryptographic technique to digitally sign messages. However, for short messages, it often incurs additional costs due to large tags. In this paper, we propose a new scheme that achieves tagless message authentication. The scheme leverages a trade-off between character support and complexity of forgery to provide information security and authenticity.

Category / Keywords: Authenticated Encryption; Minimum Tag Expansion; Authentication; Encryption; Sequence Number; Initialization Vector

Date: received 28 Feb 2017, last revised 25 Jul 2017

Contact author: anindyaorasb at gmail com

Available format(s): PDF | BibTeX Citation

Note: Clarifications to Security Analysis

Version: 20170725:172646 (All versions of this report)

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