Abstract
We introduce an efficient Key-Policy Attribute-Based Encryption (KP-ABE) scheme in prime order groups. Our scheme is semi-adaptively secure under the decisional linear assumption and supports a large universe of attributes and multi-use of attributes. Those properties are critical for real applications of KP-ABE schemes since they enable an efficient and exible access control. Prior to our work, existing KP-ABE schemes with short ciphertexts were in composite order groups or utilized either Dual Pairing Vector Spaces (DPVS) or Dual System Groups (DSG) in prime order groups. However, those techniques brought an efficiency loss. In this work, we utilize a nested dual system encryp- tion which is a variant of Waters' dual system encryption (Crypto' 09) to achieve semi-adaptively secure KP-ABE. As a result, we obtain a new scheme having better efficiency compared to existing schemes while it keeps a semi-adaptive security under the standard assumption. We implement our scheme and compare its efficiency with the previous best work.
Original language | English |
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Title of host publication | ASIA CCS 2017 - Proceedings of the 2017 ACM Asia Conference on Computer and Communications Security |
Publisher | Association for Computing Machinery, Inc |
Pages | 823-834 |
Number of pages | 12 |
ISBN (Electronic) | 9781450349444 |
DOIs | |
State | Published - 2 Apr 2017 |
Event | 2017 ACM Asia Conference on Computer and Communications Security, ASIA CCS 2017 - Abu Dhabi, United Arab Emirates Duration: 2 Apr 2017 → 6 Apr 2017 |
Publication series
Name | ASIA CCS 2017 - Proceedings of the 2017 ACM Asia Conference on Computer and Communications Security |
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Conference
Conference | 2017 ACM Asia Conference on Computer and Communications Security, ASIA CCS 2017 |
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Country/Territory | United Arab Emirates |
City | Abu Dhabi |
Period | 2/04/17 → 6/04/17 |
Bibliographical note
Publisher Copyright:© 2017 ACM.
Keywords
- Attribute based encryption
- Dual system encryption
- Prime order groups
- Short ciphertexts
- Standard assumption