Paper 2008/020

CCA2 Secure IBE: Standard Model Efficiency through Authenticated Symmetric Encryption

Eike Kiltz and Yevgeniy Vahlis

Abstract

We propose two constructions of chosen-ciphertext secure identity-based encryption (IBE) schemes. Our schemes have a security proof in the standard model, yet they offer performance competitive with all known random-oracle based schemes. The efficiency improvement is obtained by combining modifications of the IBE schemes by Waters and Gentry with authenticated symmetric encryption.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. CT-RSA 2008
Contact author(s)
evahlis @ cs toronto edu
History
2008-06-23: revised
2008-01-22: received
See all versions
Short URL
https://ia.cr/2008/020
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2008/020,
      author = {Eike Kiltz and Yevgeniy Vahlis},
      title = {CCA2 Secure IBE: Standard Model Efficiency through Authenticated Symmetric Encryption},
      howpublished = {Cryptology ePrint Archive, Paper 2008/020},
      year = {2008},
      note = {\url{https://eprint.iacr.org/2008/020}},
      url = {https://eprint.iacr.org/2008/020}
}
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