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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)
- 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