How does SQL Server store encrypted data?

Question

The encryption uses a database encryption key (DEK). The database boot record stores the key for availability during recovery. The DEK is a symmetric key. It's secured by a certificate that the server's master database stores or by an asymmetric key that an EKM module protects. 19 апр. 2022 г.

Does SQL Server encrypt data?

You can use encryption in SQL Server for connections, data, and stored procedures. The following topics contain more information about encryption in SQL Server.

How is encrypted data stored?

Storage encryption is the use of encryption for data both in transit and on storage media. Data is encrypted while it passes to storage devices, such as individual hard disks, tape drives, or the libraries and arrays that contain them.

How does encryption work in SQL Server?

Transparent Data Encryption (TDE) in SQL Server protects data at rest by encrypting database data and log files on disk. It works transparently to client existing applications, so they don't need to be changed when TDE is enabled. TDE uses real-time encryption at the page level.

Where are SQL Server encryption keys stored?

It is stored in both the database where it is used and in the master system database.

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