Paper 2012/075

Efficient identity-based threshold decryption scheme from bilinear pairings

Wei Gao, Guilin Wang, Kefei Chen, Xueli Wang, and Guoyan Zhang

Abstract

Taking advantage of a technique that allows to safely distribute a private key among decryption servers we introduce a new identity-based threshold scheme, proven secure in the random oracle model. This new paring-based scheme features a lot of improvements compared to other schemes that can be found in the literature. Among them the two most noticeable ones are, the efficiency, by reducing the number of pairing computations, and the ability for a user to generate and share a private key without requiring any access to a PKG.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
Identity-based cryptographyThreshold cryptographyProvable securityRandom oracle modelBilinear pairingIdentity-based threshold decryption
Contact author(s)
wangxuyuyan @ gmail com
History
2012-02-26: revised
2012-02-23: received
See all versions
Short URL
https://ia.cr/2012/075
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2012/075,
      author = {Wei Gao and Guilin Wang and Kefei Chen and Xueli Wang and Guoyan Zhang},
      title = {Efficient identity-based threshold decryption  scheme from bilinear pairings},
      howpublished = {Cryptology ePrint Archive, Paper 2012/075},
      year = {2012},
      note = {\url{https://eprint.iacr.org/2012/075}},
      url = {https://eprint.iacr.org/2012/075}
}
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