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AES-XTS Encryption Mode Support for TDE Tablespace Encryption

Security → Encryption

Transparent Database Encryption (TDE) tablespace encryption now supports Advanced Encryption Standard (AES) XTS (XEX-based mode with ciphertext stealing mode) in CREATE TABLESPACE statements. Earlier versions of Oracle Database TDE used AES-CFB cipher mode.

Business Benefit: AES-XTS provides improved security and better performance, especially on platforms where TDE can take advantage of parallel processing and specialized instructions built into processor hardware.

Release Availability
11.2
12.1
12.2
18c
19c
21c
23ai
Parent Feature
Transparent Data Encryption (TDE) for Tablespaces
Available On
  • Oracle Database FREE
  • Enterprise Edition
  • Oracle Database Appliance
  • Exadata
  • Exadata Cloud Service / Cloud@Customer
  • Database Cloud Service Standard Edition
  • Database Cloud Service Enterprise Edition
  • Database Cloud Service Enterprise Edition - High Performance
  • Database Cloud Service Enterprise Edition - Extreme Performance

Notes:

Free: TDE online method to encrypt/rekey/decrypt an existing tablespace is not supported

EE, ODA, and Exa: Requires the Oracle Advanced Security option

Initial Release
23ai