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How to close symmetric key?
CLOSE ALL SYMMETRIC KEYS will close any database master key that was opened in the current session by using the OPEN MASTER KEY statement. Information about open keys is visible in the sys.
Which of the following statement decrypts a symmetric key?
Explanation: OPEN SYMMETRIC KEY decrypts a symmetric key and makes it available for use.
Why is symmetric key risky?
The biggest problem with symmetric key encryption is that you need to have a way to get the key to the party with whom you are sharing data. Encryption keys aren’t simple strings of text like passwords. They are essentially blocks of gibberish. As such, you’ll need to have a safe way to get the key to the other party.
Which sets procedure options in SQL Server?
8. _____________ sets procedure options in SQL Server. Explanation: sp_procoption sets exactly one option to configure a stored procedure for auto execution when SQL Server starts up.
When to open and close symmetric keys in MSDN?
MSDN says keys close when a session ends. Is it possible to open a key at the beginning of a session and leave it open for all queries? Yes. Create (database) MASTER KEY first, then BACKUP, DROP, and CREATE the certificate (importing from earlier BACKUP), but this time WITHOUT a password.
How to open a symmetric key in SQL Server?
OPEN SYMMETRIC KEY (Transact-SQL) 1 Syntax. To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation. 2 Arguments. Is the name of the symmetric key to be opened. 3 Remarks. Open symmetric keys are bound to the session not to the security context. 4 Permissions. 5 Examples. 6 See Also
What are the additional requirements for open symmetric key?
Additional requirements vary, depending on the decryption mechanism: DECRYPTION BY CERTIFICATE: CONTROL permission on the certificate and knowledge of the password that encrypts its private key. DECRYPTION BY ASYMMETRIC KEY: CONTROL permission on the asymmetric key and knowledge of the password that encrypts its private key.
Is the password used to protect the symmetric key?
Is the password that was used to protect the symmetric key. Open symmetric keys are bound to the session not to the security context. An open key will continue to be available until it is either explicitly closed or the session is terminated.