On Attribute-Based Encryption for Circuits from Multilinear Maps
نویسنده
چکیده
Author: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . " May 2013 Supervisor: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . " May 2013 Supervisor: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . " May 2013 Approved for defence Professor: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " . . . . . . " May 2013
منابع مشابه
Attribute-Based Encryption for Circuits from Multilinear Maps
In this work, we provide the first construction of Attribute-Based Encryption (ABE) for general circuits. Our construction is based on the existence of multilinear maps. We prove selective security of our scheme in the standard model under the natural multilinear generalization of the BDDH assumption. Our scheme achieves both Key-Policy and Ciphertext-Policy variants of ABE. Our scheme and its ...
متن کاملEfficient Key-policy Attribute-based Encryption for General Boolean Circuits from Multilinear Maps
We propose an efficient Key-policy Attribute-based Encryption (KP-ABE) scheme for general (monotone) Boolean circuits based on secret sharing and on a very particular and simple form of leveled multilinear maps, called chained multilinear maps. The number of decryption key components is substantially reduced in comparison with the scheme in [6], and the size of the multilinear map (in terms of ...
متن کاملKey-Policy Attribute-Based Encryption for Boolean Circuits from Bilinear Maps
We propose the first Key-policy Attribute-based Encryption (KP-ABE) scheme for (monotone) Boolean circuits based on bilinear maps. The construction is based on secret sharing and just one bilinear map, and can be viewed as an extension of the KP-ABE scheme in [7]. Selective security of the proposed scheme in the standard model is proved, and comparisons with the scheme in [5] based on leveled m...
متن کاملCompact Attribute-Based Encryption and Signcryption for General Circuits from Multilinear Maps
Designing attribute-based systems supporting highly expressive access policies has been one of the principal focus of research in attribute-based cryptography. While attribute-based encryption (ABE) enables fine-grained access control over encrypted data in a multi-user environment, attribute-based signature (ABS) provides a powerful tool for preserving signer anonymity. Attributebased signcryp...
متن کاملGeneral Circuit Realizing Compact Revocable Attribute-Based Encryption from Multilinear Maps
This paper demonstrates new technique for managing revocation in the context of attribute-based encryption (ABE) and presents two selectively secure directly revocable ABE (RABE) constructions – supporting decryption policies realizable by polynomial size Boolean circuits of arbitrary fan-out and – featuring compactness in the sense that the number of revocation controlling components in cipher...
متن کامل