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Cryptographic Treatment of CryptDB's Adjustable Join

Author(s)
Popa, Raluca Ada; Zeldovich, Nickolai
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DownloadMIT-CSAIL-TR-2012-006.pdf (335.3Kb)
Other Contributors
Parallel and Distributed Operating Systems
Advisor
Nickolai Zeldovich
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Abstract
In this document, we provide a cryptographic treatment of the adjustable join protocol from CryptDB. We also discuss how our scheme could be used outside of CryptDB because it provides a simple functionality that may be needed in other settings. Intuitively, it is a pseudorandom permutation where an external party not knowing the secret key can nonetheless adjust a ciphertext under one key to a ciphertext under a different key, given an adjustment token from a party that knows the secret key.
Date issued
2012-03-25
URI
http://hdl.handle.net/1721.1/69859
Series/Report no.
MIT-CSAIL-TR-2012-006
Keywords
SQL queries, encrypted database

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