[PDF] Top 20 Attribute-Based Encryption for Circuits from Multilinear Maps

... We now describe how to modify our construction to use the GGH [GGH12a] graded algebras analogue of multilinear maps. The translation of our scheme above is straightforward to the GGH setting. Please note ... See full document

... user from accessing sensitive data in cryptosystems by revoking the private key of a user when the private key is revealed or ...public-key encryption (PKE), which employs the public-key infrastructure ... See full document

... system encryption techniques, introduced by Wa- ters [29], have been successful approaches for constructing fully-secure ABE (for simple ...for circuits, namely the GGHSW ...general circuits is the ... See full document

... Our results. Inspired by the work of Gorbunov, Vaikuntanathan, and Wee [GVW13] we con- struct an LWE-based ABE for functions that are represented as polynomial-size arithmetic circuits. Moreover, the system ... See full document

... Graded multilinear encodings have found extensive applications in cryptography ranging from non-interactive key exchange protocols, to broadcast and attribute-based encryption, and even ... See full document

... revocation based totally on vector commitment and institution consumer ...homomorphic encryption algorithm is also used for growing particular id for the ...ciphertext-coverage attribute-based ... See full document

... Paper organization The paper is organized into eight sections. The next section fixes the basic terminology and notation used throughout the paper. The third section discusses the scheme in [7], illustrates the ... See full document

... “full attribute-hiding” [BW07, ...functional encryption [BSW11], for which we cannot hope to achieve simulation-based security for all circuits as achieved in this work [BSW11, ...functional ... See full document

... “bootstrap” from rather mild assumptions in a standard cryptographic group to much stronger multilinear assumptions in a group (or groups, in the asymmetric setting) equipped with a κ -linear ...randomized ... See full document

... Bilinear maps (κ = 2) and multilinear maps have a lot of cryptographic applications, see [16,27,6] and [7,26,22,25], ...bilinear maps, built with pairings on elliptic curves, the construction ... See full document

... attack based on Boneh and Lipton’s subexponential algorithm for solving the discrete logarithm in black box fields ...us from realizing applications such that Papamanthou et ...“compact” maps. ... See full document

... arithmetic circuits to achieve iO, thus yielding the first iO construction from degree-5 multilinear ...of circuits C, the degree of the above polynomials can be reduced to 5 if we ... See full document

... by-one from normal to semi-functional, which have completely random R 2 component. Traditional dual systems achieve this by first adding an R 2 component to the secret key that is correlated with the ... See full document

... general circuits more practical in terms of both ef- ficiency and security [BGG + 14], [GGHZ14], ...are based on lattices, while others [GGH + 13b], [GGHZ14], [Att14] employ multilinear map [GGH13a], ... See full document

... Attribute-based encryption (ABE) was introduced in [10] as a generalization of identity-based encryption ...one based on Boolean circuits with exactly one output wire ... See full document

... The other significant requirement in the context of ABE is user revocation, a tool for changing the users’ decryption rights. Over time many users’ private keys might get compromised, users might leave or be dismissed ... See full document

... using attribute-based encryption and attribute-based proxy Re-encryption to solve security threats in CCTV ...safe from a variety of security threats because the video ... See full document

... On distributional vs. static assumptions. An interesting feature of our formulation is the following: Many assumptions, like DDH, normally require a distributional formulation – where the challenger chooses a, b, and c ... See full document

... Multilinear maps. For the past couple of years, cryptographic multilinear maps have found numerous applications in the design of cryptographic protocols, the most salient example of which is ... See full document

... Ciphertext-policy attribute-based encryption (CP-ABE) to solve the problems faced by encryption ...hierarchy attribute-based encryption scheme is proposed in cloud ...of ... See full document