Short CCA-Secure Attribute-Based Encryption

Hiroaki Anada; Seiko Arita

Paper 2017/469

Short CCA-Secure Attribute-Based Encryption

Hiroaki Anada and Seiko Arita

Abstract

Chosen-ciphertext attacks are typical threat on public-key encryption schemes. We propose a technique of individually converting an attribute-based encryption scheme (ABE) which is secure against chosen-plaintext attacks into an ABE scheme which is secure against chosen-ciphertext attacks. Our technique is helpful when a Diffie-Hellman tuple to be verified is in the target group of a bilinear map. The employed technique, the Twin Diffie-Hellman Trapdoor Test of Cash, Kiltz and Shoup, results in expansion of the secret-key length and the decryption cost by a factor of four, while the public-key and the ciphertext lengths and the encryption cost remain almost the same.

Note: The experiment on the twin Diffie-Hellman technique was corrected to describe the asymptotic behavior correctly.

Metadata

Available format(s): PDF
Publication info: Published elsewhere. Minor revision. Proceedings of "IEEE BITS 2017" (co-held with "SMARTCOMP 2017"), and the journal "Advances in Science, Technology and Engineering Systems Journal (ASTESJ)", 2018
DOI: 10.1109/SMARTCOMP.2017.7947045, 10.25046/aj030132
Keywords: public-key cryptography attribute-based encryption direct chosen-ciphertext security twin Diffie-Hellman
Contact author(s): anada @ sun ac jp
History: 2018-05-29: last of 4 revisions; 2017-05-28: received; See all versions
Short URL: https://ia.cr/2017/469
License: CC BY

BibTeX

@misc{cryptoeprint:2017/469,
      author = {Hiroaki Anada and Seiko Arita},
      title = {Short {CCA}-Secure Attribute-Based Encryption},
      howpublished = {Cryptology {ePrint} Archive, Paper 2017/469},
      year = {2017},
      doi = {10.1109/SMARTCOMP.2017.7947045, 10.25046/aj030132},
      url = {https://eprint.iacr.org/2017/469}
}