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    Presentations 2024
Presentation

Galois Extended Mode

June 21, 2024

Presenters

Scott Arciszewski - Trail of Bits

Description

AES [FIPS-197] is a 128-bit block cipher that underpins most secure communications in the modern era. GCM (NIST SP800-38D) is an authenticated block cipher mode usually used with AES. In this paper, we analyze some limitations of AES-GCM and propose a new block cipher mode, GEM, that extends GCM to provide better security bounds without introducing additional security assumptions. We specify two variants, AES-128-GEM and AES-256-GEM.

Presented at

Workshop on the Requirements for an Accordion Cipher Mode 2024

Downloads

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