Cryptography Stack Exchange
Cryptography Stack Exchange

Questions tagged [cryptdb]

CryptDB is an SQL-Aware encrypted database system from MIT

"CryptDB is a system that provides practical and provable confidentiality in the face of these attacks for applications backed by SQL databases. It works by executing SQL queries over encrypted data using a collection of efficient SQL-aware encryption schemes"

https://css.csail.mit.edu/cryptdb/

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Is there a security analysis of CryptDB?

It's interesting to see critical thinking being applied to CryptDB in contrast to all the hoopla around it here. CryptDB is not a major theoretical breakthrough but potpourri of technologies to make it work. But then: I am curious whether there has…
sashank
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CryptDB data re-encryption and onion layers

From the CryptDB paper , I understood that the onion layers once decrypted are not re-encrypted. Only columns which are queried infrequently will be re-encrypted to higher onion layers. But if we know which type of functions are to be used, then why…
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Weakening of Paillier cryptosystem due to ciphertext equivalence and order in CryptDB

The Paillier cryptosystem is probabilistic in nature and IND-CPA secure. By design given two ciphertexts one cannot distinguish whether decrypting those two ciphertexts will result in same or different plaintexts. But in certain situations like…
sashank
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Open source implementations of Symmetric Searchable Encryption and Order Preserving Encryption

Are there open source implementations of SSE and OPE? Can anyone please point to sample codes, if available. EDIT If cryptDB is not an option, what other options are available? (Indeed, these schemes are weak — which is why cryptDB proposes onion…
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How to prove Security of Onion Layers of encryption?

CryptDB has Onion layers of Encryption to provide wider functionality from weaker forms of encryption. How do we prove such things are indeed secure ? Intuitively It seems ok. Are there any parallels in theory that is related say, security of…
sashank
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How to implement order-preserving encryption without CryptDB

Which cryptographic algorithm is suitable for implementing order-preserving encryption without using CryptDB?
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SQL-Like queries in CRYPTDB doesn't work

I have downloaded and built Cryptdb and it works well. Most of queries on encrypted database run without any issue but, the query with LIKE key word receives an error. mysql> select * from pptbl; +------+-------+ | id | name | +------+-------+ |…
sheykholeslam
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