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The existence of secure indistinguishability obfuscators (iO) has far-reaching implications, significantly expanding the scope of problems amenable to cryptographic study. All known approaches to cons...
Differing-inputs obfuscation (diO), first proposed by Barak et. al. [4], provides stronger security than that provided by indistinguishability obfuscation (iO). An iO scheme provides indistinguishabil...
We construct indistinguishability obfuscation from subexponentially secure Learning With Errors (LWE), bilinear maps, a constant-locality Pseudo Random Generator (PRG), and a new tool called Pseudo Fl...
In a recent work, Lin and Tessaro [LT17] (LT) show that iO may be constructed using i) Functional Encryption (FE) for polynomials of degree LL , ii) Pseudorandom Generators (PRG) with blockwise locali...
The existence of secure indistinguishability obfuscators (iO) has far-reaching implications, significantly expanding the scope of problems amenable to cryptographic study. All known approaches to cons...
Recently, Albrecht, Davidson, Larraia, and Pellet-Mary constructed a variant of the GGH13 without ideals and presented the distinguishing attacks in simplified branching program and obfuscation securi...
Indistinguishability obfuscation (iO) is a powerful cryptographic tool often employed to construct a variety of core cryptographic primitives such as public key encryption and signatures. In this pape...
We show that indistinguishability obfuscation (IO) for all circuits can be constructed solely from secret-key functional encryption (SKFE). In the construction, SKFE need to be able to issue a-priori ...
Lin and Tessaro (Eprint 2017/250) recently proposed indistinguishability obfuscation and functional encryption candidates and proved their security based on a standard assumption on bilinear maps and ...
We propose simple generic constructions of indistinguishability obfuscator (IO). Our key tool is exponentially-efficient indistinguishability obfuscator (XIO), which is the same as IO except that the ...
Recent works (Lin, EUROCRYPT'16, ePrint'16; Lin and Vaikunthanathan, FOCS'16; Ananth and Sahai, EUROCRYPT'17) establish a tight connection between constructions of indistinguishability obfuscation fro...
Indistinguishability Obfuscation (iO) has enabled an incredible number of new and exciting applications. However, our understanding of how to actually build secure iO remains in its infancy. While man...
All constructions of general purpose indistinguishability obfuscation (IO) rely on either meta-assumptions that encapsulate an exponential family of assumptions (e.g., Pass, Seth and Telang, CRYPTO 20...
In this work, we describe a new polynomial-time attack on the multilinear maps of Coron, Lepoint, and Tibouchi (CLT13), when used in candidate iO schemes. More specifically, we show that given the o...
When plugging in a candidate PRG with locality-5 (eg, [Goldreich, ECCC 2010, O'Donnell and Witmer, CCC 2014]), we obtain a construction of IO from subexponential DDH on 5-linear maps and LWE. Previous...

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