![]() ![]() ![]() Service Master Keys can be manually regenerated using this statement: alter service master key regenerate This is also one reason why service accounts should be changed using SQL Server Configuration Manager – because then the Service Master Key encryption is regenerated correctly. This is to account for situations like clusters where the local machine key will be different after a failover. If one of them fails – SQL Server will use the other one and ‘fix’ the failed decryption (if both fail – SQL Server will error). On startup SQL Server can open the Service Master Key with either of these decryptions. There are no user configurable passwords associated with this key – it is encrypted by the SQL Server service account and the local machine key. ![]() Used to encrypt Database Master Keys, Linked Server passwords and Credentials it is generated at first SQL Server startup. There is one per SQL Server instance, it is a symmetric key, and it is stored in the master database. Service Master Key: At the top of the key hierarchy is the Service Master Key. I want to provide some tips for dealing with Database Master Keys, and in particular the case when those keys are encrypted by the Service Master Key.īefore getting into the details, let’s take a quick overview of Service Master Keys, Database Master Keys and how they interact. There’s a lot of things to consider when migrating databases between SQL Server instances. ![]()
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