A structured set of data held in a computer, esp. one that is accessible in various ways.

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Encrypted database: how to deal with general queries?

My question is quite related to the concept of homomorphic encryption, which is not practical at all nowadays. In short, I would like to know how to query encrypted databases. Simple queries which ...
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How are symmetric cryptographic keys stored?

If you have a symmetric key which is negotiated via SRP protocol between a mobile device (e.g. smartphone) and a server, what would be a safe way to persist this resulting key on each side? On the ...