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    Presentations 2024
Presentation

Accordion mode based on Hash-Encrypt-Hash

June 21, 2024

Presenters

Pablo Garcia Fernandez - University of Luxembourg

Description

NIST is planning a call for a tweakable variable-input-length strong pseudorandom permutation (VIL-SPRP), coined as “an Accordion mode”. In this paper, we survey tweakable VIL constructions, specially focusing on those based on the Hash-Encrypt-Hash paradigm (including HCTR and similar designs) in terms of their applicability as an Accordion mode, and discuss their efficiency and shortcomings. Furthermore, we also introduce an improved version that achieves Beyond Birthday Bound (BBB) security.

Presented at

Workshop on the Requirements for an Accordion Cipher Mode 2024

Event Details

Location

    National Cybersecurity Center of Excellence (NCCoE)
9700 Great Seneca Highway
Rockville, MD 20850

Related Topics

Security and Privacy: encryption

Created June 20, 2024, Updated June 21, 2024