Revisiting full-PRF-secure PMAC and using it for beyond-birthday authenticated encryption

Document Type

Book Chapter

Publication Title

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Abstract

This paper proposes an authenticated encryption scheme, called SIVx, that preserves BBB security also in the case of unlimited nonce reuses. For this purpose, we propose a single-key BBB-secure message authentication code with 2n-bit outputs, called PMAC2x, based on a tweakable block cipher. PMAC2x is motivated by PMAC TBC1k by Naito; we revisit its security proof and point out an invalid assumption. As a remedy, we provide an alternative proof for our construction, and derive a corrected bound for PMAC TBC1k.

First Page

258

Last Page

274

DOI

10.1007/978-3-319-52153-4_15

Publication Date

1-1-2017

This document is currently not available here.

Share

COinS