Results 31 to 40 of about 14,997,530 (270)
Provably Secure Covert Communication on Blockchain
Cryptography, 2018 Blockchain is a public open ledger that provides data integrity in a distributed manner. It is the underlying technology of cryptocurrencies and an increasing number of related applications, such as smart contracts. The open nature of blockchain together
Juha Partala
doaj +1 more source
Blockchain Certificateless Encryption Mechanism Based on National Secret Algorithm [PDF]
Jisuanji kexueThe blockchain has attracted widespread attention because of its distributed,non-tamperable and inherent immutability features.However,the international cryptographic algorithm used in the blockchain has certain backdoor security risks.Based on the ...
XIANG Yanjie, HUANG Xiaofang, XIANG Kefeng, ZHENG Ji’nan
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Quantum copy-protection of compute-and-compare programs in the quantum random oracle model [PDF]
QuantumCopy-protection allows a software distributor to encode a program in such a way that it can be evaluated on any input, yet it cannot be "pirated" – a notion that is impossible to achieve in a classical setting.
Andrea Coladangelo +2 more
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QuantumCommitting to information is a central task in cryptography, where a party (typically called a prover) stores a piece of information (e.g., a bit string) with the promise of not changing it.
Lijie Chen, Ramis Movassagh
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Modeling Random Oracles Under Unpredictable Queries [PDF]
, 2016 In recent work, Bellare, Hoang, and Keelveedhi (CRYPTO 2013) introduced a new abstraction called Universal Computational Extractors (UCEs), and showed how they can replace random oracles (ROs) across a wide range of cryptosystems. We formulate a new framework, called Interactive Computational Extractors (ICEs), that extends UCEs by viewing them as ...
Pooya Farshim, Arno Mittelbach
openaire +3 more sources
Tíz éves az ORACLE Magyarországon : 1993-2003 [PDF]
, 2003 Az ORACLE Hungary tíz évének története a cég és a partner vállalatok korábbi vezetőinek ...
core +1 more source
Attacks on One Designated Verifier Proxy Signature Scheme
Journal of Applied Mathematics, 2012 In a designated verifier proxy signature scheme, there are three participants, namely, the original signer, the proxy signer, and the designated verifier.
Baoyuan Kang
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Secure Identity-Based Encryption in the Quantum Random Oracle Model [PDF]
, 2012 We give the first proof of security for an identity-based encryption scheme in the quantum random oracle model. This is the first proof of security for any scheme in this model that requires no additional assumptions. Our techniques are quite general and
Mark Zhandry
core +3 more sources
The Random Oracle Methodology, Revisited [PDF]
, 2002 We take a critical look at the relationship between the security of cryptographic schemes in the Random Oracle Model, and the security of the schemes that result from implementing the random oracle by so called "cryptographic hash functions& ...
Ran Canetti +5 more
core +1 more source
Tightly Secure Lattice Identity-Based Signature in the Quantum Random Oracle Model
, 2023 We present a quantumly secure identity-based signature scheme based on the standard short integer solution problem, featuring tight security reductions in the quantum and classic random oracle models. The scheme has short signatures.
Li, Qinyi, Foo, Ernest
core +1 more source