Encryption

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Using authenticators with SQL Server encryption

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Authenticators are additional data that gets encrypted along with the data to be stored in an encrypted manner. When it comes to decrypt the data, if the right authenticator isn't specified, SQL Server doesn't return the data in the decrypted form. Rather, a NULL value is returned, just as if the wrong key was used.

2009-06-12

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Question of the Day

Encoding NULL

What is returned from this code in SQL Server 2025?

SELECT BASE64_ENCODE(NULL)

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