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The GGH15 multilinear maps have served as the foundation for a number of cutting-edge cryptographic proposals. Unfortunately, many schemes built on GGH15 have been explicitly broken by so-called ``zer...
New Multilinear Maps from CLT13 with Provable Security Against Zeroizing Attacks
multilinear maps obfuscation CLT13
2017/9/28
We devise the first weak multilinear map model for CLT13 multilinear maps (Coron et al., CRYPTO 2013) that captures all known classical polynomial-time attacks on the maps. We then show important appl...
Zeroizing Attacks on Indistinguishability Obfuscation over CLT13
Multilinear Maps CLT13 Indistinguishability Obfuscation
2016/12/8
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...
Preventing CLT Zeroizing Attacks on Obfuscation
Multilinear Maps CLT13 Indistinguishability Obfuscation
2016/12/7
We describe a defense against zeroizing attacks on indistinguishability obfuscation (iO) over the CLT13 multilinear map construction. This defense applies to the most recent extension of the attack by...
In recent work Cheon, Han, Lee, Ryu, and Stehl磂 presented an attack on the multilinear
map of Coron, Lepoint, and Tibouchi (CLT). They show that given many low-level encodings
of zero, the CLT multi...