Paper 2011/701

Decentralized Attribute-Based Signatures

Tatsuaki Okamoto and Katsuyuki Takashima

Abstract

In this paper, we present the first decentralized multi-authority attribute-based signature (DMA-ABS) scheme, in which no central authority and no trusted setup are required. The proposed DMA-ABS scheme for general (non-monotone) predicates is fully secure(adaptive-predicate unforgeable and perfect private) under a standard assumption, the decisional linear (DLIN) assumption, in the random oracle model. Our DMA-ABS scheme is comparably as efficient as the most efficient ABS scheme. As a by-product, this paper also presents an adaptively secure DMA functional encryption (DMA-FE) scheme under the DLIN assumption.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
attribute-based signaturesdecentralized multi-authority systemnon-monotone predicatesfunctional encryption
Contact author(s)
Takashima Katsuyuki @ aj mitsubishielectric co jp
History
2012-07-27: last of 2 revisions
2011-12-23: received
See all versions
Short URL
https://ia.cr/2011/701
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2011/701,
      author = {Tatsuaki Okamoto and Katsuyuki Takashima},
      title = {Decentralized Attribute-Based Signatures},
      howpublished = {Cryptology ePrint Archive, Paper 2011/701},
      year = {2011},
      note = {\url{https://eprint.iacr.org/2011/701}},
      url = {https://eprint.iacr.org/2011/701}
}
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