Paper 2020/1445 Original: eprint.iacr.org/2020/1445 ↗

Observations on COMET

Daniel J. Bernstein
Henri Gilbert
Meltem Sonmez Turan
Abstract

This note presents two attacks against COMET, a second-round candidate in the NIST lightweight cryptography standardization process. The first attack uses a long message to detect the use of weak keys, whereas the second attack focuses on the resistance of COMET against slide attacks. These attacks do not invalidate the security claims of the designers.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Preprint.
History
2020-11-19: last updated
2020-11-19: published
Short URL
https://ia.cr/2020/1445
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2020/1445,
      author = {Daniel J.  Bernstein and Henri Gilbert and Meltem Sonmez Turan},
      title = {Observations on COMET},
      howpublished = {Cryptology {ePrint} Archive, Paper 2020/1445},
      year = {2020},
      url = {https://eprint.iacr.org/2020/1445}
}
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