Improved Cryptanalysis of SHAMATA-BC

Adem Atalay; Orhun Kara; Ferhat Karakoç

Paper 2008/513 Original: eprint.iacr.org/2008/513 ↗

Improved Cryptanalysis of SHAMATA-BC

Adem Atalay

Orhun Kara

Ferhat Karakoç

Abstract

We state the design flaws of the 1-round block cipher SHA\-MATA-BC, designed by Fleishmann and Gorski by using the building blocks of SHAMATA hash function. We fix the flaws and then show that the amended version of SHAMATA-BC is much weaker. We believe that there is no connection between security level of SHAMATA as a hash function and that of SHAMATA-BC as a block cipher.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Preprint.
History: 2008-12-09: last updated; 2008-12-09: published
Short URL: https://ia.cr/2008/513
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2008/513,
      author = {Adem Atalay and Orhun Kara and Ferhat Karakoç},
      title = {Improved Cryptanalysis of SHAMATA-BC},
      howpublished = {Cryptology {ePrint} Archive, Paper 2008/513},
      year = {2008},
      url = {https://eprint.iacr.org/2008/513}
}