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Paper 2016/262

Collaborative Multi-Authority KP-ABE for Shorter Keys and Parameters

Riccardo Longo and Chiara Marcolla and Massimiliano Sala

Abstract

Bilinear groups are often used to create Attribute-Based Encryption (ABE) algo- rithms. In our proposal, a Multiple-Authorities Key-Policy Attribute-Based Encryp- tion scheme is constructed in which the authorities collaborate to achieve shorter keys and parameters, enhancing the efficiency of encryption and decryption. We prove our system secure under an original variation of the bilinear Diffie- Hellman assumption, we also show its relation with other similar assumptions.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint.
Keywords
ABEKP-ABEMulti AuthorityBilinear GroupsDiffie-Hellman Assumptions
Contact author(s)
riccardolongomath @ gmail com
History
2017-12-11: revised
2016-03-08: received
See all versions
Short URL
https://ia.cr/2016/262
License
Creative Commons Attribution
CC BY
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