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Paper 2015/048

On Obfuscation with Random Oracles

Ran Canetti and Yael Tauman Kalai and Omer Paneth

Abstract

Assuming trapdoor permutations, we show that there exist function families that cannot be VBB-obfuscated even if both the obfuscator and the obfuscated program have access to a random oracle. Specifically, these families are the robust unobfuscatable families of [Bitansky-Paneth, STOC 13]. Our result stands in contrast to the general VBB obfuscation algorithms in more structured idealized models where the oracle preserves certain algebraic homomorphisms [Canetti-Vaikuntanathan, ePrint 13; Brakerski-Rothblum, TCC 14; Barak et al., Eurocrypt 14].

Metadata
Available format(s)
PDF
Publication info
A minor revision of an IACR publication in TCC 2015
Contact author(s)
omer @ bu edu
History
2015-01-22: received
Short URL
https://ia.cr/2015/048
License
Creative Commons Attribution
CC BY
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