Results 81 to 90 of about 4,580 (206)

A Hybrid PoS–PoW Blockchain Framework for Secure Cyber Threat Intelligence Sharing: Design, Implementation, and Evaluation

open access: yesBig Data and Cognitive Computing
Many blockchain-based cyber threat intelligence (CTI) sharing systems emphasize immutability and auditability, but often treat CTI submissions as ordinary blockchain transactions without explicitly separating content validation from publication anchoring.
Ahmed El-Kosairy, Heba Kamal Aslan
doaj   +1 more source

Blockchain-Based Privacy-Preserving Authentication and Access Control Model for E-Health Users

open access: yesInformation
The advancement of e-health systems has resulted in substantial enhancements in healthcare delivery via effective data management and accessibility.
Abdullah Alabdulatif
doaj   +1 more source

XHash: Efficient STARK-friendly Hash Function [PDF]

open access: yes
Zero-knowledge proofs are widely used in real-world applications for authentication, access control, blockchains, and cryptocurren- cies, to name a few.
Léo Perrin   +4 more
core  

Distributed k-ary System: Algorithms for Distributed Hash Tables [PDF]

open access: yes, 2006
This dissertation presents algorithms for data structures called distributed hash tables (DHT) or structured overlay networks, which are used to build scalable self-managing distributed systems. The provided algorithms guarantee lookup consistency in the
Ghodsi, Ali
core  

RiceChain-Plus: an enhanced framework for blockchain-based rice supply chain systems-ensuring security, privacy, and efficiency [PDF]

open access: yesPeerJ Computer Science
The rice supply chain is a complex system that demands effective management to ensure reliability and efficiency, given the involvement of multiple stakeholders.
Bello Musa Yakubu   +2 more
doaj   +2 more sources

Hash First, Argue Later: Adaptive Verifiable Computations on Outsourced Data [PDF]

open access: yes, 2016
Proof systems for verifiable computation (VC) have the potential to make cloud outsourcing more trustworthy. Recent schemes enable a verifier with limited resources to delegate large computations and verify their outcome based on succinct arguments ...
Markulf Kohlweiss   +11 more
core   +1 more source

Optimal Parameter Selection for Efficient Memory Integrity Verification Using Merkle Hash trees [PDF]

open access: yes, 2004
A secure, tamper proof execution environment is critical for trustworthy network computing. Newly emerging hardware, such as those developed as part of the TCPA and Palladium initiatives, enables operating systems to implement such an environment ...
Sirer, Emin Gun   +3 more
core  

Universal Hash Proofs and a Paradigm for Adaptive Chosen Ciphertext Secure Public-Key Encryption

open access: yes, 2001
We present several new and fairly practical public-key encryption schemes and prove them secure against adaptive chosen ciphertext attack. One scheme is based on Paillier's Decision Composite Residuosity (DCR) assumption, while another is based in the ...
Shoup, Victor, Cramer, Ronald
core  

A Rigorous Correctness Proof for Pastry

open access: yes, 2016
International audiencePeer-to-peer protocols for maintaining distributed hash tables, such as Pastry or Chord, have become popular for a class of Internet applications.
Stephan Merz   +8 more
core   +1 more source

Round-Optimal Privacy-Preserving Protocols with Smooth Projective Hash Functions [PDF]

open access: yes, 2012
International audienceIn 2008, Groth and Sahai proposed a powerful suite of techniques for constructing non-interactive zero-knowledge proofs in bilinear groups.
Olivier Blazy   +5 more
core   +1 more source

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