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More on Impossibility of Virtual Black-Box Obfuscation in Idealized Models
Virtual Black-Box Obfuscation Idealized Models
2015/12/29
The celebrated work of Barak et al. (Crypto’01) ruled out the possibility of virtual blackbox
(VBB) obfuscation for general circuits. The recent work of Canetti, Kalai, and Paneth
(TCC’15) extended ...
More on the Impossibility of Virtual-Black-Box Obfuscation with Auxiliary Input
Auxiliary Input Virtual-Black-Box
2014/3/6
We show that if there exist indistinguishability obfuscators for a certain class C of circuits then there do not exist independent-auxiliary-input virtual-black-box (VBB) obfuscators for any family of...
Virtual Black-Box Obfuscation for All Circuits via Generic Graded Encoding
secret-key cryptography Obfuscation
2014/3/10
We present a new general-purpose obfuscator for all polynomial-size circuits. The obfuscator uses graded encoding schemes, a generalization of multilinear maps. We prove that the obfuscator exposes no...