![]() TDE doesn't provide encryption across communication channels. This ability lets software developers encrypt data by using AES and 3DES encryption algorithms without changing existing applications. It lets you follow many laws, regulations, and guidelines established in various industries. TDE protects data at rest, which is the data and log files. It's secured by a certificate that the server's master database stores or by an asymmetric key that an EKM module protects. The database boot record stores the key for availability during recovery. The encryption uses a database encryption key (DEK). TDE does real-time I/O encryption and decryption of data and log files. ![]() But you must plan this kind of protection in advance. This solution prevents anyone without the keys from using the data. One solution is to encrypt sensitive data in a database and use a certificate to protect the keys that encrypt the data. Building a firewall around the database servers.īut a malicious party who steals physical media like drives or backup tapes can restore or attach the database and browse its data.To help secure a database, you can take precautions like: This encryption is known as encrypting data at rest. ![]() Transparent data encryption (TDE) encrypts SQL Server, Azure SQL Database, and Azure Synapse Analytics data files. ![]() Applies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW)
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