Results 41 to 50 of about 1,639 (211)

Access Control in Healthcare IoT: A Comprehensive Survey

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
This survey analyses access control mechanisms in Healthcare IoT, reviewing traditional and emerging models, identifying security and privacy challenges, and highlighting open research issues. It provides a comparative perspective to support the design of secure, scalable, and patient‐centric healthcare IoT systems.
Aleena Nazir   +3 more
wiley   +1 more source

Formal Proofs for the Security of Signcryption [PDF]

open access: yesJournal of Cryptology, 2002
Signcryption is an asymmetric cryptographic method that provides simultaneously both message confidentiality and unforgeability at a low computational and communication overhead. In this paper we propose realistic security models for signcryption, which give the attacker power to choose both messages/signcryptexts as well as recipient/sender public ...
Joonsang Baek   +2 more
openaire   +1 more source

DRFL: A Dual‐Encryption and Reputation Evaluation Defence Against Malicious Attacks on Federated Learning

open access: yesIET Communications, Volume 20, Issue 1, January/December 2026.
Federated learning (FL) enables collaborative model training without collecting user data but faces security risks such as privacy breaches, poisoning, and free‐rider attacks. To address these challenges, we propose DRFL, a defense mechanism integrating dual encryption, reputation evaluation and blockchain to enhance security and transparency ...
Zheng Yuan   +5 more
wiley   +1 more source

Blockchain‐Enabled Privacy‐Preserving Access Control for EHRs Sharing With Optimized User and Attribute Revocation

open access: yesIET Information Security, Volume 2026, Issue 1, 2026.
Electronic health records (EHRs) have become a crucial application in cloud computing environments, necessitating advanced privacy‐preserving access control mechanisms. Ciphertext policy attribute‐based encryption (CP‐ABE) is a widely recognized solution for secure access control in outsourced data environments.
Khanadech Worapaluk   +2 more
wiley   +1 more source

Toward Dynamic Attribute-Based Signcryption (Poster) [PDF]

open access: yes, 2011
This paper presents an ongoing work toward the proposal of the new concept of the attribute-based cryptosystem. In SCN2010, Gagné, Narayan, and Safavi-Naini proposed attribute-based signcryption (ABSC) with threshold structure.
Atsuko Miyaji   +5 more
core   +1 more source

A Provably Secure Proxy Signcryption Scheme Using Bilinear Pairings

open access: yesJournal of Applied Mathematics, 2014
As people in modern societies are busier than any human era and computer network has profound impact on how people work and live through fast and convenient information exchange, people need more help from each other to accomplish more work via network ...
Nai-Wei Lo, Jia-Lun Tsai
doaj   +1 more source

An efficient signcryption scheme with key privacy and its extension to ring signcryption

open access: yesJournal of Computer Security, 2010
In Information Processing Letters (2006), Tan pointed out that the anonymous signcryption scheme proposed by Yang, Wong and Deng (YWD) in ISC 2005 provides neither confidentiality nor anonymity. However, no discussion has been made on how a secure scheme can be made and there is no secure scheme available to date.
Chung Ki Li   +4 more
openaire   +2 more sources

Fraud Detection in Privacy Preserving Health Insurance System Using Blockchain Technology

open access: yesEngineering Reports, Volume 7, Issue 8, August 2025.
A privacy‐preserving and fraud‐detection‐enabled health insurance claim system has been proposed that addresses the dual challenges of privacy preservation and fraud detection in health insurance claims. The proposed model enables both patients and healthcare providers to submit claims securely, ensuring patient anonymity while effectively detecting ...
Md. Mazharul Islam   +4 more
wiley   +1 more source

Identity Based Generalized Signcryption Scheme in the Standard Model

open access: yesEntropy, 2017
Generalized signcryption (GSC) can adaptively work as an encryption scheme, a signature scheme or a signcryption scheme with only one algorithm. It is more suitable for the storage constrained setting.
Xiaoqin Shen, Yang Ming, Jie Feng
doaj   +1 more source

Lattice-based ring signcryption for consortium blockchain

open access: yesJournal of King Saud University: Computer and Information Sciences, 2023
Ring signcryption with no group administrator satisfies the decentralization and blockchain anonymity. In this article, we construct new lattice-based ring signcryption scheme suitable for consortium blockchain (CB-LRSCS), in which the smart contract ...
Huifang Yu, Zhirui Lv
doaj   +1 more source

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