Abstract
Decentralized multi-authority attribute-based encryption (ABE) has been adopted to protect outsourced data. However, there are some security issues. Firstly, the user's attributes information is leaked to the authorities and secondly, the access structure being sent along with ciphertext violates its privacy. To address these issues, an efficient decentralized attribute-based encryption scheme with features of privacy preservation and expressive access structures is proposed. The proposed scheme cannot only prevent user's attributes information leakage, but it also provides a hidden, flexible and expressive structure realizable by Linear Secret Sharing Scheme (LSSS). Moreover, we prove the proposed scheme to be secure against Chosen-Ciphertexts Attacks (CCA) under the standard Decisional Bilinear Diffie-Hellman (DBDH) assumption. In addition, proposed scheme performs efficiently in comparison to existing schemes shown by theoretical and experimental analysis.
| Original language | English |
|---|---|
| Title of host publication | 2017 IEEE Conference on Computer Communications Workshops |
| Subtitle of host publication | INFOCOM WKSHPS |
| Publisher | IEEE |
| Number of pages | 6 |
| ISBN (Electronic) | 9781538627846 |
| ISBN (Print) | 9781538627846 |
| DOIs | |
| Publication status | E-pub ahead of print - 23 Nov 2017 |
| Externally published | Yes |
| Event | 2017 IEEE Conference on Computer Communications Workshops - Atlanta, United States Duration: 1 May 2017 → 4 May 2017 |
Conference
| Conference | 2017 IEEE Conference on Computer Communications Workshops |
|---|---|
| Abbreviated title | INFOCOM WKSHPS |
| Country/Territory | United States |
| City | Atlanta |
| Period | 1/05/17 → 4/05/17 |
Funding
The authors thank the anonymous reviewers for their invaluable comments and suggestions. This work is supported by the National Natural Science Foundation of China (Grant Nos. U1401251, 61272457 and 61402366), the Major Fundamental Research Program of Shaanxi (Grant No. 2016ZDJC-04).