Quagmire ciphers and group theory: What is a Beaufort cipher?

Thomas Kaeding

Paper 2022/1488

Quagmire ciphers and group theory: What is a Beaufort cipher?

Thomas Kaeding

Abstract

We show that a Beaufort cipher is simultaneously both a quagmire 1 and a quagmire 2 cipher, which includes it in the set of quagmire 4 ciphers as well, albeit as a degenerate one. The Beaufort is one of a family of ciphers that share this property.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Preprint.
Keywords: beaufort vigenere group theory quagmire
Contact author(s): kaeding @ blackswan duckdns org
History: 2022-12-01: last of 2 revisions; 2022-10-29: received; See all versions
Short URL: https://ia.cr/2022/1488
License: CC BY

BibTeX

@misc{cryptoeprint:2022/1488,
      author = {Thomas Kaeding},
      title = {Quagmire ciphers and group theory: What is a Beaufort cipher?},
      howpublished = {Cryptology {ePrint} Archive, Paper 2022/1488},
      year = {2022},
      url = {https://eprint.iacr.org/2022/1488}
}