Paper 2016/787

On the security of new vinegar-like variant of multivariate signature scheme

Yasufumi Hashimoto

Abstract

In IMACC 2015 and Inscrypt 2015, Zhang and Tan proposed new vinegar-like variants of multivariate signature schemes. While their aims were to enhance the security of broken schemes, the security is much less than expected. In this note, we describe how to recover a public key of the original scheme.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
multivariate public-key cryptosystemsnew vinegar-like variant
Contact author(s)
hashimoto @ math u-ryukyu ac jp
History
2016-08-18: received
Short URL
https://ia.cr/2016/787
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/787,
      author = {Yasufumi Hashimoto},
      title = {On the security of new vinegar-like variant of multivariate signature scheme},
      howpublished = {Cryptology ePrint Archive, Paper 2016/787},
      year = {2016},
      note = {\url{https://eprint.iacr.org/2016/787}},
      url = {https://eprint.iacr.org/2016/787}
}
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