Sxdh assumption
WebMay 16, 2012 · dual system encryption under the SXDH assumption via dual pairing vector spaces [29, 30], which is a technique to achiev e orthogonality in prime-order groups. This is the first work to instantiate WebMay 2, 2004 · An aggregate signature scheme (recently proposed by Boneh, Gentry, Lynn, and Shacham) is a method for combining n signatures from n different signers on n different messages into one signature of unit length. We propose sequential aggregate signatures, in which the set of signers is ordered. The aggregate signature is computed by having each ...
Sxdh assumption
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WebThe privacy of our construction relies on the SXDH assumption over bilinear groups via complexity leveraging. AB - Recently, Kiayias, Zacharias and Zhang-proposed a new E2E verifiable e-voting system called 'DEMOS' that for the first time provides E2E verifiability without relying on external sources of randomness or the random oracle model; ... WebThe external Diffie–Hellman (XDH) assumption is a mathematic assumption used in elliptic curve cryptography. The XDH assumption holds that there exist certain subgroups of …
WebAug 21, 2024 · In this work, we show how to construct indistinguishability obfuscation from subexponential hardness of four well-founded assumptions. We prove: Let $τ\\in (0,\\infty), δ\\in (0,1), ε\\in (0,1)$ be arbitrary constants. Assume sub-exponential security of the following assumptions, where $λ$ is a security parameter, and the parameters $\\ell,k,n$ …
WebAssuming the hardness of the Symmetric eXternal Diffie-Hellman (SXDH) problem, our scheme contains only 14 elements in the proof and remains independent of the size of the language and the witness. Moreover, our scheme has tighter simulation soundness than the previous schemes.Technically, we refine and extend a partitioning technique from a … WebAug 6, 2024 · In this section, we describe an efficient rerandomizable signature scheme, whose security is proved under the SXDH assumption. Our construction is inspired from …
WebBoth our schemes are based on SXDH, which is a well-studied standard assumption, and secure in the standard model. Furthermore, our schemes are quite ffit, incurring an ffi loss by only a small constant factor from previous bounded function hiding schemes. Keywords: functional encryption, inner product, function hiding, un-bounded, bilinear maps
WebJan 25, 2024 · 2.3 Subspace Assumptions via SXDH. In this subsection, we present subspace assumptions derived from the SXDH assumption. We will rely on these … marco\u0027s pizza wentzvilleWebWe present efficient Identity-Based Encryption (IBE) and signature schemes under the Symmetric External Diffie-Hellman (SXDH) assumption in bilinear groups. In both the IBE … marco\u0027s pizza westerville ohioWebFrom Rerandomizability to Sequential Aggregation: Efficient Signature Schemes Based on SXDH Assumption. Sanjit Chatterjee and R. Kabaleeshwaran Abstract. An aggregate … marco\u0027s pizza westcottWebunder the SXDH assumption. 1.1 Our Contribution Our rst contribution is to propose an e cient rerandomizable signature scheme under the SXDH assumption. We then use the … ct to georgia driveWebSpecifically, we show how to adapt the recent DLIN-based instantiation of Lewko (EUROCRYPT 2012 ) to the SXDH assumption. To our knowledge, this is the first work to instantiate either dual system encryption or dual pairing vector spaces under the SXDH assumption. Furthermore, our work could be extended to many other functional encryption. marco\u0027s pizza wauseon ohioWebFunctional encryption (FE) is a novel cryptographic paradigm. In comparison to conventional encryption schemes, FE allows producing secret keys skf corresponding to a function f that decrypt encryptions of x0 to f(x0). Recently, Lin proposed FE for arbitrary degree polynomials from the SXDH assumption to an exact multilinear map (CRYPTO’17). marco\u0027s pizza west carrollton ohWebschemes, we show the performance in the SXDH setting. Our schemes are instantiated with the Kiltz–Pan–Wee structure-preserving signature scheme from the SXDH assumption [6] and the Groth–Sahai proof system in the SXDH setting [5]. We also note that all the five schemes in this table are instantiated in prime order groups. marco\u0027s pizza wentzville mo