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EUROCRYPT
2006
Springer

Private Circuits II: Keeping Secrets in Tamperable Circuits

12 years 5 months ago
Private Circuits II: Keeping Secrets in Tamperable Circuits
Abstract. Motivated by the problem of protecting cryptographic hardware, we continue the investigation of private circuits initiated in [16]. In this work, our aim is to construct circuits that should protect the secrecy of their internal state against an adversary who may modify the values of an unbounded number of wires, anywhere in the circuit. In contrast, all previous works on protecting cryptographic hardware relied on an assumption that some portion of the circuit must remain completely free from tampering. We obtain the first feasibility results for such private circuits. Our main result is an efficient transformation of a circuit C, realizing an arbitrary (reactive) functionality, into a private circuit C realizing the same functionality. The transformed circuit can successfully detect any serious tampering and erase all data in the memory. In terms of the information available to the adversary, even in the presence of an unbounded number of adaptive wire faults, the circuit C...
Yuval Ishai, Manoj Prabhakaran, Amit Sahai, David
Added 22 Aug 2010
Updated 22 Aug 2010
Type Conference
Year 2006
Where EUROCRYPT
Authors Yuval Ishai, Manoj Prabhakaran, Amit Sahai, David Wagner
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