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id :	926
type :	Seminar
dateandtime :	2020-03-11 11:00:00
duration :	60 min.
	Recommended duration for PhD thesis is 90 minutes, for other seminar types, it is 60 minutes. The duration specified here is used to reserve the room.
place :	A101
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departmental :	yes
title :	Efficient Dynamic Searchable Encryption with Forward Privacy
author :	Alptekin Küpçü
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country :	Turkey
abstract :	Searchable symmetric encryption (SSE) enables a client to perform searches over its outsourced encrypted files while preserving privacy of the files and queries. We present a new dynamic SSE scheme that achieves forward privacy, where a newly added file cannot be linked to previous searches. Our scheme is efficient and parallelizable and outperforms the best previous schemes providing forward privacy, and achieves competitive performance with dynamic schemes without forward privacy. We provide a full security proof in the random oracle model. In our experiments on the Wikipedia archive of about four million pages, the server takes one second to perform a search with 100,000 results.
biography :	Alptekin Küpçü received his Ph.D. degree from Brown University Computer Science Department in 2010. Since then, he has been working as a faculty at Koç University, and leading the Cryptography, Security & Privacy Research Group he founded. His research mainly focuses on applied cryptography, with applications to cloud security, privacy-preserving machine learning, peer-to-peer networks, blockchains, and game theory and mechanism design. He has also led the development of the Cashlib cryptographic library, which is available as open source online. Dr. Küpçü has various accomplishments including 5 international patents granted, 11 funded research projects (for 9 of which he was the principal investigator), 2 European Union COST Action management committee memberships, 4 Teaching Awards, 2 Outstanding Young Scientist Awards (BAGEP and GEBİP), METU Parlar Foundation Research Encouragement Award, ACM and IEEE Senior Member Awards, and the Royal Society of UK Newton Advanced Fellowship. For more information, visit https://crypto.ku.edu.tr
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