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Title:
On the Secure Obfuscation of Deterministic Finite Automata
Authors: W. Erik Anderson
Abstract:In this paper, we show how to construct secure obfuscation for Deterministic Finite Automata, assuming non-uniformly strong one-way functions exist. We revisit the software protection approaches originally proposed by [B79,G87,GO96,K80] and revise them to the current obfuscation setting of Barak et al. [BGI+01]. Under this model, we introduce an efficient oracle that retains some small" secret about the original program. Using this secret, we can construct an obfuscator and two-party protocol that securely obfuscates Deterministic Finite Automata against malicious adversaries. The security of this model retains the strong virtual black box" property originally proposed in [BGI+01] while incorporating the stronger condition of dependent auxiliary inputs in [GTK05]. Additionally, we further show that our techniques remain secure under concurrent self-composition with adaptive inputs and that Turing machines are obfuscatable under this model.
ePrint: https://eprint.iacr.org/2008/184
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