Results 21 to 30 of about 7,609 (190)

Individual Displacements in Hashing with Coalesced Chains [PDF]

open access: yesCombinatorics, 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.
openaire   +2 more sources

A blockchain-based traceable and secure data-sharing scheme [PDF]

open access: yesPeerJ 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
doaj   +2 more sources

Research on the optimization of lightweight nodes in blockchain by selective compression algorithm

open access: yes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
doaj  

A blockchain architecture with master-slave blockchain

open access: yes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
doaj   +2 more sources

Reversible and Plausibly Deniable Covert Channels in One-Time Passwords Based on Hash Chains

open access: yesApplied 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
doaj   +1 more source

Blockchain Processing Technique Based on Multiple Hash Chains for Minimizing Integrity Errors of IoT Data in Cloud Environments

open access: yesSensors, 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
doaj   +1 more source

Key management scheme of distributed IoT devices based on blockchains

open access: yesIET Communications, 2023
With the rapid development of Internet of Things devices and communication technology, the number of devices connected to the Internet of Things is growing exponentially.
Qingyuan Liu   +5 more
doaj   +1 more source

Reliable, Secure, and Efficient Hardware Implementation of Password Manager System Using SRAM PUF

open access: yesIEEE 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
doaj   +1 more source

JAVASCRIPT SECURITY USING CRYPTOGRAPHIC HASH FUNCTIONS

open access: yesСучасні інформаційні системи, 2019
The subject of this research is the development of methods of protection against attacks on third-party JavaScript and the document object model (DOM).
Irada Rahimova   +3 more
doaj   +1 more source

Novel self-renewal hash chain scheme based on (t,n) threshold and division tree

open access: yesTongxin xuebao, 2013
The introduction of renewal hash chain overcame resource-constrained defect in traditional hash chains,but the existing renewable schemes had still held unsatisfactory performance especially on security and complexity.The definitions of repetition ...
Hai-ping HUANG   +4 more
doaj   +2 more sources

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