منابع مشابه
Mind Your Coins: Fully Leakage-Resilient Signatures with Graceful Degradation
We construct new leakage-resilient signature schemes. Our schemes remain unforgeable against an adversary leaking arbitrary (yet bounded) information on the entire state of the signer (sometimes known as fully leakage resilience). The main feature of our constructions, is that they offer a graceful degradation of security in situations where standard existential unforgeability is impossible. Th...
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Leakage resilient codes (LRCs) are probabilistic encoding schemes that guarantee message hiding even under some bounded leakage on the codeword. We introduce the notion of fully leakage resilient codes (FLRCs), where the adversary can leak λ0 bits from the encoding process, namely, the message and the randomness involved during the encoding process. In addition the adversary can as usual leak f...
متن کاملLeakage-Resilient Signatures
The strongest standard security notion for digital signature schemes is unforgeability under chosen message attacks. In practice, however, this notion can be insufficient due to “side-channel attacks” which exploit leakage of information about the secret internal state. In this work we put forward the notion of “leakage-resilient signatures,” which strengthens the standard security notion by gi...
متن کاملLeakage Resilient Fully Homomorphic Encryption
We construct the first leakage resilient variants of fully homomorphic encryption (FHE) schemes. Our leakage model is bounded adaptive leakage resilience. We first construct a leakageresilient leveled FHE scheme, meaning the scheme is both leakage resilient and homomorphic for all circuits of depth less than some pre-established maximum set at the time of key generation. We do so by applying id...
متن کاملFully leakage-resilient signatures revisited: Graceful degradation, noisy leakage, and construction in the bounded-retrieval model
We construct new leakage-resilient signature schemes. Our schemes remain unforgeable against an adversary leaking arbitrary (yet bounded) information on the entire state of the signer (sometimes known as fully leakage resilience), including the random coin tosses of the signing algorithm. The main feature of our constructions is that they offer a graceful degradation of security in situations w...
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ژورنال
عنوان ژورنال: Journal of Cryptology
سال: 2012
ISSN: 0933-2790,1432-1378
DOI: 10.1007/s00145-012-9136-3