Paper 2016/656

Improving Practical UC-Secure Commitments based on the DDH Assumption

Eiichiro Fujisaki

Abstract

At Eurocrypt 2011, Lindell presented practical static and adaptively UC-secure commitment schemes based on the DDH assumption. Later, Blazy {\etal} (at ACNS 2013) improved the efficiency of the Lindell's commitment schemes. In this paper, we present static and adaptively UC-secure commitment schemes based on the same assumption and further improve the communication and computational complexity, as well as the size of the common reference string.

Note: This is an extended abstract of the paper with the same title that appears in SCN 2016.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. MINOR revision.SCN 2016
Keywords
universally composable commitmentsadaptive securityand public-key cryptography
Contact author(s)
eiichiro fujisaki @ gmail com
History
2016-06-28: received
Short URL
https://ia.cr/2016/656
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/656,
      author = {Eiichiro Fujisaki},
      title = {Improving Practical UC-Secure Commitments based on the DDH Assumption},
      howpublished = {Cryptology ePrint Archive, Paper 2016/656},
      year = {2016},
      note = {\url{https://eprint.iacr.org/2016/656}},
      url = {https://eprint.iacr.org/2016/656}
}
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