Paper 2018/736

Improved Signature Schemes for Secure Multi-Party Computation with Certified Inputs

Marina Blanton and Myoungin Jeong

Abstract

The motivation for this work comes from the need to strengthen security of secure multi-party protocols with the ability to guarantee that the participants provide their truthful inputs in the computation. This is outside the traditional security models even in the presence of malicious participants, but input manipulation can often lead to privacy and result correctness violations. Thus, in this work we treat the problem of combining secure multi-party computation (SMC) techniques based on secret sharing with signatures to enforce input correctness in the form of certification. We modify two currently available signature schemes to achieve private verification and efficiency of batch verification and show how to integrate them with two prominent SMC protocols.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. MAJOR revision.ESORICS 2018
Contact author(s)
mblanton @ buffalo edu
History
2018-08-15: received
Short URL
https://ia.cr/2018/736
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2018/736,
      author = {Marina Blanton and Myoungin Jeong},
      title = {Improved Signature Schemes for Secure Multi-Party Computation with Certified Inputs},
      howpublished = {Cryptology ePrint Archive, Paper 2018/736},
      year = {2018},
      note = {\url{https://eprint.iacr.org/2018/736}},
      url = {https://eprint.iacr.org/2018/736}
}
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