Identity-Based Proxy Signature for Cloud Service in SaaS

2012 ◽  
Author(s):  
Xi Cao ◽  
Li Xu ◽  
Yuexin Zhang ◽  
Wei Wu
Keyword(s):  
Cloud Service ◽  
Proxy Signature ◽  
Identity Based

Insecurity of an Efficient Identity-Based Proxy Signature in the Standard Model

2014 ◽  
Vol 58 (10) ◽  
pp. 2507-2508 ◽  
Author(s):  
Debiao He ◽  
Mingwu Zhang ◽  
Baowen Xu
Keyword(s):  
Standard Model ◽  
Proxy Signature ◽  
The Standard Model ◽  
Identity Based

scholarly journals Adaptive Secure Cross-Cloud Data Collaboration with Identity-Based Cryptography and Conditional Proxy Re-Encryption

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Qinlong Huang ◽  
Yue He ◽  
Wei Yue ◽  
Yixian Yang
Keyword(s):  
Service Providers ◽  
Cloud Service ◽  
Security And Privacy ◽  
Broadcast Encryption ◽  
Cloud Data ◽  
Identity Based ◽  
Identity Based Cryptography ◽  
And Performance ◽  
Cryptographic Techniques ◽  
Data Collaboration

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.

Identity-based proxy signature over NTRU lattice

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

Identity-based key-insulated proxy signature without random oracles

2011 ◽  
Vol 16 (5) ◽  
pp. 557-566 ◽  
Author(s):  
Jian-hong Chen ◽  
Yu Long ◽  
Ke-fei Chen ◽  
Yong-tao Wang
Keyword(s):  
Proxy Signature ◽  
Random Oracles ◽  
Identity Based
Sign in / Sign up

Export Citation Format

Share Document