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搜索结果: 1-15 共查到军事学 Adaptive Security相关记录22条 . 查询时间(0.078 秒)
We propose a generic framework for perfectly hiding UC-Commitment schemes in the Global Random Oracle model of Canetti \textit{el at.} (CCS 14). The main building block of our construction is a novel ...
In this work, we propose two IPE schemes achieving both adaptive security and full attribute-hiding in the prime-order bilinear group, which improve upon the unique existing result satisfying both fea...
Nowadays it is well known that randomness may fail due to bugs or deliberate randomness subversion. As a result, the security of traditional public-key encryption (PKE) cannot be guaranteed any more. ...
Adaptive security embodies one of the strongest notions of security that allows an adversary to corrupt parties at any point during protocol execution and gain access to its internal state. Since it m...
Hierarchical identity-based encryption (HIBE) can be extended to revocable HIBE (RHIBE) if a private key of a user can be revoked when the private key is revealed or expired. Previously, many selectiv...
A recent work of Hemenway et al. (CRYPTO '16) modifies Yao's construction and shows that the resulting scheme is adaptively secure. This is done by encrypting the garbled circuit from Yao's constructi...
In broadcast encryption schemes, a distribution center broadcasts an encrypted message to a subset SS chosen from a universe of receivers and only the intended users are able to decrypt the message. M...
Semi-adaptive security is a notion of security that lies between selective and adaptive security for Attribute-Based Encryption (ABE) and Functional Encryption (FE) systems. In the semi-adaptive model...
We construct an LWE-based key-policy attribute-based encryption (ABE) scheme that supports attributes of unbounded polynomial length. Namely, the size of the public parameters is a fixed polynomial ...
Constrained pseudorandom functions have recently been introduced independently by Boneh and Waters (Asiacrypt’13), Kiayias et al. (CCS’13), and Boyle et al. (PKC’14). In a standard pseudorandom func...
More generally, we show that any n party protocol tolerates leakage of ≈\poly(log\spar) bits from one party at the end of the protocol execution, \emph{if and only if} the protocol has passive adaptiv...
In a functional encryption (FE) scheme, the owner of the secret key can generate restricted decryption keys that allow users to learn specific functions of the encrypted messages and nothing else. In...
We present an adaptively secure functional encryption (FE) scheme based on deterministic finite automata (DFA). The construction uses composite-order bilinear pairings and is built upon the selectivel...
For searching keywords against encrypted data, the public key encryption scheme with keyword search (PEKS), and its an extension called secure-channel free PEKS (SCF-PEKS) have been proposed. In SCF-P...
In this paper we consider \emph{anonymity} in the context of Broadcast Encryption (BE). This issue has received very little attention so far and \emph{all but one} of the currently available BE scheme...

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