MS SQL Server :: English: Transparent Data Encryption (TDE)
Github Files: https://github.com/WallyPons/YouTube
File Name: TDE.sql
Advantages:
Strong security at rest — protects physical database and backups.
Transparent implementation — no changes to applications or queries.
Backup safety — encrypted backups can be restored only on servers with the correct certificate/key.
Compliance support — helps meet regulatory requirements (e.g., GDPR, HIPAA, PCI DSS).
Low overhead — minimal runtime performance penalty compared to application-level encryption.
Disadvantages:
At-rest only — does not protect data in memory or in transit (use TLS/SSL for network encryption).
Key management complexity — requires careful backup and storage of certificates/master keys. Losing them = unrecoverable database.
All-or-nothing encryption — cannot encrypt only selected tables or columns (use Cell-Level Encryption for that).
TempDB impact — since TempDB gets encrypted, all databases using it incur some performance overhead.
Limited flexibility in cloud environments — not supported in AWS RDS SQL Server (instead, AWS KMS or storage-level encryption is used).
Chapters:
00:00 Intro
01:38 Verify TDE and DMK
02:35 Create DMK
03:00 Create Certificate
03:44 Assign certificate
05:27 Backup Certificate
06:57 Test Certificate (Backup/Restore DB)
11:58 Removing TDE
14:06 Outro
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