Efficient Cloud-based Secret Shuffling via Homomorphic Encryption
Research output: Contribution to book/Conference proceedings/Anthology/Report › Conference contribution › Contributed › peer-review
Contributors
Abstract
When working with joint collections of confidential data from multiple sources, e.g., in cloud-based multi-party computation scenarios, the ownership relation between data providers and their inputs itself is confidential information. Protecting data providers' privacy desires a function for secretly shuffling the data collection. We present the first efficient secure multi-party computation protocol for secret shuffling in scenarios with a central server. Based on a novel approach to random index distribution, our solution enables the randomization of the order of a sequence of encrypted data such that no observer can map between elements of the original sequence and the shuffled sequence with probability better than guessing. It allows for shuffling data encrypted under an additively homomorphic cryptosystem with constant round complexity and linear computational complexity. Being a general-purpose protocol, it is of relevance for a variety of practical use cases.
Details
Original language | English |
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Title of host publication | 2020 IEEE Symposium on Computers and Communications, ISCC 2020 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (electronic) | 978-1-7281-8086-1 |
Publication status | Published - Jul 2020 |
Peer-reviewed | Yes |
Publication series
Series | IEEE Symposium on Computers and Communications |
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Volume | 2020-July |
ISSN | 1530-1346 |
Conference
Title | 2020 IEEE Symposium on Computers and Communications, ISCC 2020 |
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Duration | 7 - 10 July 2020 |
City | Rennes |
Country | France |
External IDs
Scopus | 85094123617 |
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Keywords
ASJC Scopus subject areas
Keywords
- homomorphic encryption, Privacy-preserving computation, secret shuffling, secure multiparty computation