How to Secure Database with Transparent Data Encryption?
This article describes the process of encrypting data on SQL Server with Transparent Data Encryption (TDE). It covers how TDE improves database security, implementation steps, performance effects, and solutions to potential problems. It is an important guide for database administrators.
What is TDE?
TDE SQL Server, Azure SQL Database ve Azure Synapse Analytics veri dosyalarını şifreler. Bu şifreleme, “data at rest” olarak bilinir.
TDE encrypts the database and uses a certificate to protect the encryption keys. This prevents people who do not have the key from accessing the data.
Purpose of TDE
The aim of TDE is to prevent the database files from being copied to another server or the database from being backed up and restored to another SQL server. With TDE, data is encrypted on disk (data at rest).
How Does It Work?
TDE provides real-time encryption and decryption of data (MDF) and log (LDF) files. A database encryption key (DEK) is used for encryption. The DEK is a symmetric key and is stored in the master database. The database boot record stores this key for use during restore.
