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New proof methods for attribute-based encryption: achieving full security through selective techniques. (English) Zbl 1296.94128
Safavi-Naini, Reihaneh (ed.) et al., Advances in cryptology – CRYPTO 2012. 32nd annual cryptology conference, Santa Barbara, CA, USA, August 19–23, 2012. Proceedings. Berlin: Springer (ISBN 978-3-642-32008-8/pbk). Lecture Notes in Computer Science 7417, 180-198 (2012).
Summary: 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.
For the entire collection see [Zbl 1246.94010].

94A60 Cryptography
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