Results 161 to 170 of about 25,658,882 (194)
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Recipient Anonymous Ciphertext-Policy Attribute Based Encryption
2013Attribute Based Encryption ABE is a promising and increasingly versatile paradigm. Given the many potential uses of ABE schemes, constructing efficient schemes that provide recipient anonymity via policy hiding while ensuring constant-size secret key and ciphertext with strong security notion is a challenging task.
Y. Sreenivasa Rao, Ratna Dutta
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Traceable-then-revocable ciphertext-policy attribute-based encryption scheme
Future Generation Computer Systems, 2019Abstract A traceable ciphertext-policy attribute-based encryption (T-CPABE) scheme can trace a malicious user, who may leak her/his decryption privilege to a third party for some benefits. However, even if the malicious user is traced, the existing schemes cannot revoke her/him from the cryptosystems.
Zhenhua Liu 0001 +3 more
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An Improved Ciphertext-Policy Attribute-Based Encryption Scheme
2017According to characteristics of mass encryption service in cloud storage, this paper proposed an improved SCP-OOABE scheme which uses the access control tree as a control structure and decomposes key generation and encryption into online and offline phase respectively that could be finished in a short time in online phase.
Hua Zheng, Xi Zhang, Qi Yang
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Multi-authority ciphertext-policy attribute-based encryption with accountability
Proceedings of the 6th ACM Symposium on Information, Computer and Communications Security, 2011Attribute-based encryption (ABE) is a promising tool for implementing fine-grained cryptographic access control. Very recently, motivated by reducing the trust assumption on the authority, and enhancing the privacy of users, a multiple-authority key-policy ABE system, together with a semi-generic anonymous key-issuing protocol, have been proposed by ...
Jin Li 0002 +5 more
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New Ciphertext-Policy Attribute-Based Encryption with Efficient Revocation
2014 IEEE International Conference on Computer and Information Technology, 2014Attribute-based encryption (ABE) is getting popular for its fine-grained access control in cloud computing. However, dynamic user or attribute revocation is a challenge in original ABE schemes. To address this issue, a new cipher text-policy ABE scheme with efficient revocation is proposed.
Longhui Zu, Zhenhua Liu, Juanjuan Li
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Ciphertext-Policy Attribute-Based Delay Encryption
International Journal of Information and Computer Security, 2022Lijiao Chen, Kewei Lv
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Short CCA-Secure Ciphertext-Policy Attribute-Based Encryption
2017 IEEE International Conference on Smart Computing (SMARTCOMP), 2017We propose a technique of individually modifying an attribute-based encryption scheme (ABE) secure against chosen-plaintext attacks (CPA) into an ABE scheme secure against chosen- ciphertext attacks (CCA) in the standard model. We demonstrate the technique in the case of the Waters ciphertext-policy ABE (CP-ABE).
Hiroaki Anada, Seiko Arita
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Ciphertext-Policy Attribute Based Encryption with Large Attribute Universe
2016Ciphertext-policy attribute-based encryption(CP-ABE) has become a crucial technical for cloud computing in that it enables one to share data with users under the access policy defined by himself. Generally, the universe of attributes is not fixed before the system setup in practice.
Siyu Xiao +3 more
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Deploying parallelised ciphertext-policy attributed-based encryption in clouds
International Journal of Computational Science and Engineering, 2018In recent years, cloud storage has become an attractive solution due to its elasticity, availability and scalability. However, the security issue has started to prevent public clouds becoming more popular. Traditional encryption algorithms (both symmetric and asymmetric ones) fail to support achieving effective secure cloud storage due to severe issues
Wenjie Fan +5 more
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A Provably Secure Ciphertext-Policy Hierarchical Attribute-Based Encryption
2015With the booming growth of network technology, the problems of information disclosure are becoming more and more serious. The attribute-based encryption has been one of hotspots for the advantage of fine-grained access control. In this paper, a provably secure ciphertext-policy hierarchical attribute-based encryption is proposed, which can satisfy the ...
Ziying Wang, Jian Wang 0038
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