Paper 2021/1660

Identity-Based Matchmaking Encryption without Random Oracles

Danilo Francati, Alessio Guidi, Luigi Russo, and Daniele Venturi

Abstract

Identity-based matchmaking encryption (IB-ME) is a generalization of identity-based encryption where the sender and the receiver can both specify a target identity: if both the chosen target identities match the one of the other party, the plaintext is revealed, and otherwise the sender’s identity, the target identity, and the plaintext remain hidden. Previous work showed how to construct IB-ME in the random oracle model. We give the first construction in the plain model, based on standard assumptions over bilinear groups.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. INDOCRYPT 2021
DOI
10.1007/978-3-030-92518-5_19
Keywords
Identity-based encryptionmatchmaking encryptionplain model
Contact author(s)
russol @ eurecom fr
dfrancati @ cs au dk
venturi @ di uniroma1 it
History
2021-12-17: received
Short URL
https://ia.cr/2021/1660
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2021/1660,
      author = {Danilo Francati and Alessio Guidi and Luigi Russo and Daniele Venturi},
      title = {Identity-Based Matchmaking Encryption without Random Oracles},
      howpublished = {Cryptology ePrint Archive, Paper 2021/1660},
      year = {2021},
      doi = {10.1007/978-3-030-92518-5_19},
      note = {\url{https://eprint.iacr.org/2021/1660}},
      url = {https://eprint.iacr.org/2021/1660}
}
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