Paper 2016/075

Weaknesses in Hadamard Based Symmetric Key Encryption Schemes

Gajraj Kuldeep, Devendra Kumar Yadav, and A. K. Sharma

Abstract

In this paper security aspects of the existing symmetric key encryption schemes based on Hadamard matrices are examined. Hadamard matrices itself have symmetries like one circulant core or two circulant core. Here, we are exploiting the inherent symmetries of Hadamard matrices and are able to perform attacks on these encryption schemes. It is found that entire key can be obtained by observing the ciphertext.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Preprint. MINOR revision.
Contact author(s)
gajrajkuldeep @ gmail com
History
2016-01-28: received
Short URL
https://ia.cr/2016/075
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/075,
      author = {Gajraj Kuldeep and Devendra Kumar Yadav and A.  K.  Sharma},
      title = {Weaknesses in Hadamard Based Symmetric Key Encryption Schemes},
      howpublished = {Cryptology ePrint Archive, Paper 2016/075},
      year = {2016},
      note = {\url{https://eprint.iacr.org/2016/075}},
      url = {https://eprint.iacr.org/2016/075}
}
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