Private functional encryption and secure deduplication
Abstract/Contents
- Abstract
- We consider the security models of two novel encryption schemes: identity-based encryption (IBE) and its generalization to functional encryption (FE), and a new primitive denoted message-locked encryption (MLE). These concepts are motivated by applications such as routing encrypted email and deduplicating encrypted data. Identity-based encryption systems can be used to build encryption schemes that allow searching on encrypted data. We put forward a new notion of security for IBE and FE, called function privacy, that ensures that secret keys do not reveal unnecessary information about the functionality enabled by the key. We develop a general approach to constructing function-private IBE schemes from a variety of standard cryptographic assumptions and extend our ideas to consider a more expressive class of functions. Such schemes enable searching on encrypted data without revealing what is being searched for. In a similar vein, we show that we can strengthen the security notions proposed originally for message-locked encryption (MLE) to consider a larger and more realistic class of adversaries. We also propose constructions for secure deduplication schemes that satisfy these security notions.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2014 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Raghunathan, Ananth |
|---|---|
| Associated with | Stanford University, Department of Computer Science. |
| Primary advisor | Boneh, Dan |
| Thesis advisor | Boneh, Dan |
| Thesis advisor | Trevisan, Luca |
| Thesis advisor | Williams, Ryan (Richard Ryan) |
| Advisor | Trevisan, Luca |
| Advisor | Williams, Ryan (Richard Ryan) |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Ananth Raghunathan. |
|---|---|
| Note | Submitted to the Department of Computer Science. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2014. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2014 by Ananth Raghunathan
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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