Results 11 to 20 of about 876 (241)
Revocable attribute-based proxy re-encryption [PDF]
Journal of Mathematical Cryptology, 2021 Abstract Attribute-based proxy re-encryption (ABPRE), which combines the notions of proxy re-encryption (PRE) and attribute-based encryption (ABE), allows a semi-trusted proxy with re-encryption key to transform a ciphertext under a particular access policy into a ciphertext under another access policy, without revealing any ...
Fucai Luo, Saif M. Al-Kuwari
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IEEE Access, 2023 With the frequent occurrence of private data breaches, it is now more necessary than ever to address how to protect private data. The combination of Ciphertext-Policy Attribute-Based Encryption (CP-ABE) and blockchain typically enables secure storage and
Caimei Wang +5 more
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Lazy-mode Ciphertext-update Based Approach for CP-ABE Attribute Change [PDF]
Jisuanji kexue, 2022 Ciphertext-policy attribute-based encryption(CP-ABE) can be used to realize secure data sharing in cloud computing environments.However,user attribute change(attribute revocation and addition) in CP-ABE is a tricky problem.Generally,attribute change is ...
LEI Xue-jiao, WANG Yin-long, Nurmamat HELIL
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An Outsourced Attribute-Based Encryption Scheme Supporting Attribute Revocation [PDF]
Jisuanji gongcheng, 2017 Traditional Ciphertext-Policy Attribute-Based Encryption(CP-ABE) schemes have large computational overhead in key generation,decryption and attribute revocation processes.Aiming at this problem,this paper proposes an outsourced CP-ABE scheme which ...
LIU Zhusong,PENG Jiapeng
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Revocable Ciphertext-Policy Attribute-Based Encryption in Data Outsourcing Systems from Lattices
Jisuanji kexue yu tansuo, 2020 Attribute-based encryption mechanism is widely used in outsourcing environment because of its charac-teristics of “one-to-many” communication. However, users attributes often change dynamically.
YU Jinxia, YANG Chaochao, ZHANG Qichao, YAN Xixi
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Revocable and Decentralized Attribute-Based Encryption
The Computer Journal, 2016 In this paper, we propose a revocable and decentralized attribute-based encryption (ABE) system that splits the task of decryption key generation across multiple attribute authorities (AAs) without requiring any central party such that it achieves attribute revocation by simply stopping updating of the corresponding private key.
Hui Cui 0001, Robert H. Deng
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Expiration and Revocation of Keys for Attribute-Based Signatures [PDF]
, 2015 Attribute-based signatures, introduced by Maji et al., are signatures that prove that an authority has issued the signer “attributes” that satisfy some specified predicate. In existing attribute-based signature schemes, keys are valid indefinitely once issued.
Stephen R. Tate, Roopa Vishwanathan
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IEEE Access, 2020 With the advancement of information and communication technology (ICT), the medical sector is undergoing a massive transformation. Health records are being digitized, stored remotely in the cloud and shared with different stakeholders.
Kennedy Edemacu +2 more
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CP-ABE Scheme with Attribute Revocation Under Environment of Multi-attribute Authority [PDF]
Jisuanji gongcheng, 2018 For the attribute-based encryption scheme,a single authority has the problem of low efficiency and easy disclosure of user keys.Through the establishment of a decentralized attribute authority and agent reencryption technology,a Ciphertext-policy ...
ZHANG Yulei,LIU Wenjing,MA Yanli,WANG Caifen
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Revocable Attribute-Based Encryption Scheme Assisted by Edge and Cloud [PDF]
Jisuanji gongchengUploading data from Internet of Things (IoT) devices to the cloud has become a mainstream data management solution. However, cloud-based data management is associated with security risks.
ZHANG Weihang, ZHONG Yongyan, XIANG Yuanzhu, DING Shichan
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