New Proof Methods for Attribute-Based Encryption: Achieving Full Security through Selective Techniques

Allison Lewko; Brent Waters

Paper 2012/326

New Proof Methods for Attribute-Based Encryption: Achieving Full Security through Selective Techniques

Allison Lewko and Brent Waters

Abstract

We develop a new methodology for utilizing the prior techniques to prove selective security for functional encryption systems as a direct ingredient in devising proofs of full security. This deepens the relationship between the selective and full security models and provides a path for transferring the best qualities of selectively secure systems to fully secure systems. In particular, we present a Ciphertext-Policy Attribute-Based Encryption scheme that is proven fully secure while matching the efficiency of the state of the art selectively secure systems.

Metadata

Available format(s): PDF
Publication info: Published elsewhere. this is the full version of a paper appearing in Crypto 2012
Contact author(s): alewko @ cs utexas edu
History: 2012-06-12: received
Short URL: https://ia.cr/2012/326
License: CC BY

BibTeX

@misc{cryptoeprint:2012/326,
      author = {Allison Lewko and Brent Waters},
      title = {New Proof Methods for Attribute-Based Encryption: Achieving Full Security through Selective Techniques},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/326},
      year = {2012},
      url = {https://eprint.iacr.org/2012/326}
}