Identity-Based Proxy Signature for Cloud Service in SaaS

Author(s):  
Xi Cao ◽  
Li Xu ◽  
Yuexin Zhang ◽  
Wei Wu
2014 ◽  
Vol 58 (10) ◽  
pp. 2507-2508 ◽  
Author(s):  
Debiao He ◽  
Mingwu Zhang ◽  
Baowen Xu

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Qinlong Huang ◽  
Yue He ◽  
Wei Yue ◽  
Yixian Yang

Data collaboration in cloud computing is more and more popular nowadays, and proxy deployment schemes are employed to realize cross-cloud data collaboration. However, data security and privacy are the most serious issues that would raise great concerns from users when they adopt cloud systems to handle data collaboration. Different cryptographic techniques are deployed in different cloud service providers, which makes cross-cloud data collaboration to be a deeper challenge. In this paper, we propose an adaptive secure cross-cloud data collaboration scheme with identity-based cryptography (IBC) and proxy re-encryption (PRE) techniques. We first present a secure cross-cloud data collaboration framework, which protects data confidentiality with IBC technique and transfers the collaborated data in an encrypted form by deploying a proxy close to the clouds. We then provide an adaptive conditional PRE protocol with the designed full identity-based broadcast conditional PRE algorithm, which can achieve flexible and conditional data re-encryption among ciphertexts encrypted in identity-based encryption manner and ciphertexts encrypted in identity-based broadcast encryption manner. The extensive analysis and experimental evaluations demonstrate the well security and performance of our scheme, which meets the secure data collaboration requirements in cross-cloud scenarios.


2018 ◽  
Vol 32 (3) ◽  
pp. e3867
Author(s):  
Faguo Wu ◽  
Wang Yao ◽  
Xiao Zhang ◽  
Wenhua Wang ◽  
Zhiming Zheng

2011 ◽  
Vol 16 (5) ◽  
pp. 557-566 ◽  
Author(s):  
Jian-hong Chen ◽  
Yu Long ◽  
Ke-fei Chen ◽  
Yong-tao Wang

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