On the Role of Cryptography in Privacy-Preserving Cloud Computing
Event details
| Date | 15.05.2018 |
| Hour | 10:00 › 12:00 |
| Speaker | Christian Mouchet |
| Location | |
| Category | Conferences - Seminars |
EDIC candidacy exam
Exam president: Prof. Carmela Troncoso
Thesis advisor: Prof. Jean-Pierre Hubaux
Co-examiner: Prof. Bryan Ford
Abstract
The concept of cloud computing typically refers to a computation environment that is logically and physically owned by different entities. Such separation of concerns allows for convenient centralization of hardware resources, which facilitates maintenance and amortizes costs. Unfortunately, this also raises concerns about potential privacy violations such as abuse or leakage of sensitive data by the providers of these services.
This work discusses the role cryptography in privacy-preserving cloud computing. First, by presenting a hierarchical classification of such systems based on the notion of cryptographically defined trust boundaries. Then, two concrete systems are analyzed and positioned within this theoretical context. An important result is presented, stating that the most general class, in which input data is distributed between multiple distrusting clients, cannot be realized by any 2-party cryptographic scheme. Finally, promising research directions acknowledging this impossibility result are proposed.
Background papers
On the Impossibility of Cryptography Alone for Privacy-Preserving Cloud Computing, by Marten van Dijk and Ari Juels. 5th USENIX Workshop on Hot Topics in Security (HotSec' 2010).
Big Data Analytics over Encrypted Datasets with Seabed,by Antonis Papadimitriou et all. USENIX Symposium on Operating Systems Design and Implementation (OSDI ’16).
Efficiently Outsourcing Multiparty Computation under Multiple Keys, by Andreas Peter et all. IEEE Transactions on Information Forensics and Security (2013).
Exam president: Prof. Carmela Troncoso
Thesis advisor: Prof. Jean-Pierre Hubaux
Co-examiner: Prof. Bryan Ford
Abstract
The concept of cloud computing typically refers to a computation environment that is logically and physically owned by different entities. Such separation of concerns allows for convenient centralization of hardware resources, which facilitates maintenance and amortizes costs. Unfortunately, this also raises concerns about potential privacy violations such as abuse or leakage of sensitive data by the providers of these services.
This work discusses the role cryptography in privacy-preserving cloud computing. First, by presenting a hierarchical classification of such systems based on the notion of cryptographically defined trust boundaries. Then, two concrete systems are analyzed and positioned within this theoretical context. An important result is presented, stating that the most general class, in which input data is distributed between multiple distrusting clients, cannot be realized by any 2-party cryptographic scheme. Finally, promising research directions acknowledging this impossibility result are proposed.
Background papers
On the Impossibility of Cryptography Alone for Privacy-Preserving Cloud Computing, by Marten van Dijk and Ari Juels. 5th USENIX Workshop on Hot Topics in Security (HotSec' 2010).
Big Data Analytics over Encrypted Datasets with Seabed,by Antonis Papadimitriou et all. USENIX Symposium on Operating Systems Design and Implementation (OSDI ’16).
Efficiently Outsourcing Multiparty Computation under Multiple Keys, by Andreas Peter et all. IEEE Transactions on Information Forensics and Security (2013).
Practical information
- General public
- Free
Contact
- EDIC - [email protected]