Paper 2016/508

Collapse-binding quantum commitments without random oracles

Dominique Unruh

Abstract

We construct collapse-binding commitments in the standard model. Collapse-binding commitments were introduced by Unruh (Eurocrypt 2016) to model the computational-binding property of commitments against quantum adversaries, but only constructions in the random oracle model were known. Furthermore, we show that collapse-binding commitments imply selected other security definitions for quantum commitments, answering an open question by Unruh (Eurocrypt 2016).

Note: Minor changes following suggestions from the Asiacrypt 2016 reviewers.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
A major revision of an IACR publication in ASIACRYPT 2016
Keywords
Quantum cryptographycommitmentshash functions
Contact author(s)
unruh @ ut ee
History
2016-08-23: revised
2016-05-25: received
See all versions
Short URL
https://ia.cr/2016/508
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/508,
      author = {Dominique Unruh},
      title = {Collapse-binding quantum commitments without random oracles},
      howpublished = {Cryptology ePrint Archive, Paper 2016/508},
      year = {2016},
      note = {\url{https://eprint.iacr.org/2016/508}},
      url = {https://eprint.iacr.org/2016/508}
}
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