Results 21 to 30 of about 7,685 (190)
On Fast Verification of Hash Chains
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2010 A hash chain H for a hash function hash(·) is a sequence of hash values 〈xn, xn−1,..., x0 〉, where x0 is a secret value, xi is generated by xi=hash(xi−1) for 1≤i≤n, and xn is a public value. Hash values of H are disclosed gradually from xn−1 to x0. The correctness of a disclosed hash value xi can be verified by checking the equation $x_n \stackrel{?}{=}
Dae Hyun Yum +3 more
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Reversible and Plausibly Deniable Covert Channels in One-Time Passwords Based on Hash Chains
Applied Sciences, 2021 Covert channels enable stealthy communications over innocent appearing carriers. They are increasingly applied in the network context. However, little work is available that exploits cryptographic primitives in the networking context to establish such ...
Jörg Keller, Steffen Wendzel
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Individual Displacements in Hashing with Coalesced Chains [PDF]
Combinatorics, Probability and Computing, 2008 We study the asymptotic distribution of the displacements in hashing with coalesced chains, for both late-insertion and early-insertion. Asymptotic formulas for means and variances follow. The method uses Poissonization and some stochastic calculus.
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Sensors, 2021 As IoT (Internet of Things) devices are diversified in the fields of use (manufacturing, health, medical, energy, home, automobile, transportation, etc.), it is becoming important to analyze and process data sent and received from IoT devices connected ...
Yoon-Su Jeong
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Regional Science Policy &Practice, EarlyView., 2022 Abstract The agri‐food supply chain has been a popular research topic in recent years. The combination of a demand for products of high quality and safety standards and the increasing number of stakeholders in supply chain networks has required the agri‐food business to transform from vertically integrated to vertically operated supply chain networks ...
Thanh_Tuan Chu, Thi Thu Tra Pham
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Reliable, Secure, and Efficient Hardware Implementation of Password Manager System Using SRAM PUF
IEEE Access, 2021 Using Physical Unclonable Functions (PUFs) within the server-side has been recently proposed to address security vulnerabilities of the password (PW) authentication mechanism, including attacks on the database (DB) of user credentials.
Mohammad Mohammadinodoushan +4 more
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A blockchain-based traceable and secure data-sharing scheme [PDF]
PeerJ Computer Science, 2023 The traditional data-sharing model relies on a centralized third-party platform, which presents challenges such as poor transaction transparency and unsecured data security. In this article, we propose a blockchain-based traceable and secure data-sharing
Zhenqi Wang, Shaopeng Guan
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Research on the optimization of lightweight nodes in blockchain by selective compression algorithm
四川大学学报. 自然科学版, 2022 Lightweight nodes in blockchain have the limitation that they cannot participate in the blockchain verification process because they cannot store a complete copy of the blockchain, which weakens the distributed characteristics of the blockchain.
LIU Yun +3 more
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A blockchain architecture with master-slave blockchain
物联网学报, 2021 With the continuous development of blockchain technology, different chains are derived due to different adaptation scenarios.Each chain has its own characteristics, such as public chains like bitcoin and ethereum, a large number of private chains and ...
Pengliu TAN, Lixuran WAN
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Fast Verification of Hash Chains [PDF]
, 2004 A hash chain is a sequence of hash values x i = hash(x i − 1) for some initial secret value x 0. It allows to reveal the final value x n and to gradually disclose the pre-images x n − 1, x n − 2, ... whenever necessary. The correctness of a given value x i can then be verified by re-computing the chain and comparing the result to x n .
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