Paper Info
Title
A novel authorization delegation scheme for multimedia social networks by using proxy re-encryption
Abstract
To solve the existing problem of the multimedia social networks platforms, for instance, the copyrighted or private multimedia content can not be safely shared among users, we proposed a novel authorization delegation scheme based on the proxy re-encryption mechanism. This scheme enables one user to delegate digital rights/privileges to another or the group of users, and achieves fine-grained authorization delegation. The ciphertext of content encryption key (CEK) was re-encrypted by the proxy with re-encryption key, which is generated by delegator, and then the ciphertext was sent to the delegatee only who could decrypt the ciphertext. The CCA security of proxy re-encryption was formally proved that this scheme realized the authorization delegation while ensuring the confidentiality of both the sharing content and the delegator's private key. Besides, the privileges can be revoked when the usage control policies have not yet been satisfied. Finally, we demonstrated in detail that the proposed scheme was applied to a multimedia social network prototype called by CyVOD MSN, and it achieved the security share of multimedia content and the functionality of digital rights management, together with better resolving the issue of limited access control list.
Year
DOI
Venue
2016
10.1007/s11042-015-2929-2
Multimedia Tools Appl.
Keywords
Field
DocType
Multimedia social networks, Multimedia security, Authorization, Delegation, Proxy re-encryption, Digital rights management
Computer security,Computer science,Computer network,Encryption,Access control list,Ciphertext,Delegation,Public-key cryptography,Digital rights management,Key (cryptography),Proxy re-encryption
Journal
Volume
Issue
ISSN
75
21
1573-7721
Citations 
PageRank 
References 
8
0.50
26
Authors
4
Name
Order
Citations
PageRank
weining feng180.50
Zhiyong Zhang216418.42
Jian Wang317973.08
linqian han480.50