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OPEN SYMMETRIC KEY - Persist Across Sessions

Posted By:      Posted Date: August 28, 2010    Points: 0   Category :Sql Server
We have a client .NET WPF application which connects to a local SQL 2008 Express server.  We are using symmetric SQL encryption to encrypt some columns.  In order to encrypt or decrypt, we must first open the symmetric key.  We have a logon trigger which opens the key automatically for us. Unfortunately, the key is opened A LOT due to the key being closed after each session closes.  This causes the CPU to peg at 100%.  We are using connection pooling and it would be wonderful to have the key remain open across sessions.  Anyone have any thoughts on how to do this?

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