Leakage-Resilient Certificateless Signature Under Continual Leakage Model
نویسندگان
چکیده
منابع مشابه
Cryptography Resilient to Continual Memory Leakage
In recent years, there has been a major effort to design cryptographic schemes that remain secure even if part of the secret key is leaked. This is due to a recent proliferation of side channel attacks which, through various physical means, can recover part of the secret key. We explore the possibility of achieving security even with continual leakage, i.e., even if some information is leaked e...
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Current signature and encryption schemes secure against continual leakage fail completely if the key in any time period is fully exposed. We suggest forward security as a second line of defense, so that in the event of full exposure of the current secret key, at least uses of keys prior to this remain secure, a big benefit in practice. (For example if the signer is a certificate authority, full...
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We consider the task of constructing interactive proofs for NP which can provide meaningful security for a prover even in the presence of continual memory leakage. We imagine a setting where an adversarial verifier participates in multiple sequential interactive proof executions for a fixed NP statement x. In every execution, the adversarial verifier is additionally allowed to leak a fraction o...
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We devise the first identity-based encryption (IBE) that remains secure even when the adversary is equipped with auxiliary input (STOC ’09) – any computationally uninvertible function of the master secret key and the identity-based secret key. In particular, this is more general than the tolerance of Chow et al.’s IBE schemes (CCS ’10) and Lewko et al.’s IBE schemes (TCC ’11), in which the leak...
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ژورنال
عنوان ژورنال: Information Technology And Control
سال: 2018
ISSN: 2335-884X,1392-124X
DOI: 10.5755/j01.itc.47.2.17847