Paper 2017/469

Short CCA-Secure Attribute-Based Encryption

Hiroaki Anada and Seiko Arita


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.

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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
10.1109/SMARTCOMP.2017.7947045, 10.25046/aj030132
public-key cryptographyattribute-based encryptiondirect chosen-ciphertext securitytwin Diffie-Hellman
Contact author(s)
anada @ sun ac jp
2018-05-29: last of 4 revisions
2017-05-28: received
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      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},
      note = {\url{}},
      url = {}
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