NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Observations on COMET

Published

Author(s)

Daniel J. Bernstein, Henri Gilbert, Meltem Sonmez Turan

Abstract

This note provides two observations on COMET, a second round candidate of the NIST lightweight cryptography standardization process. The first observation uses a long message to detect the use of weak keys, whereas the second observation focuses on the resistance of COMET against slide attacks. These observations do not invalidate the security claims of the designers
Citation
Cryptology ePrint Archive
Volume
2020
Pub Weblink
https://eprint.iacr.org/2020/1445
Pub Type
Websites

Download Paper

Local Download

Keywords

COMET, distinguishers, Lightweight cryptography, slide attacks, weak subkeys
Cryptography

Citation

Bernstein, D. , Gilbert, H. and Sonmez Turan, M. (2020), Observations on COMET, Cryptology ePrint Archive, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931099, https://eprint.iacr.org/2020/1445 (Accessed October 13, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created November 15, 2020, Updated October 12, 2021
Was this page helpful?