💼 4.1.3 Ensure SQL server's Transparent Data Encryption (TDE) protector is encrypted with Customer-managed key - Level 2 (Automated)

• ID: /frameworks/cis-azure-v1.5.0/04/01/03

Description

Transparent Data Encryption (TDE) with Customer-managed key support provides increased transparency and control over the TDE Protector, increased security with an HSM-backed external service, and promotion of separation of duties.

With TDE, data is encrypted at rest with a symmetric key (called the database encryption key) stored in the database or data warehouse distribution. To protect this data encryption key (DEK) in the past, only a certificate that the Azure SQL Service managed could be used. Now, with Customer-managed key support for TDE, the DEK can be protected with an asymmetric key that is stored in the Azure Key Vault. The Azure Key Vault is a highly available and scalable cloud-based key store which offers central key management, leverages FIPS 140-2 Level 2 validated hardware security modules (HSMs), and allows separation of management of keys and data for additional security.

Based on business needs or criticality of data/databases hosted on a SQL server, it is recommended that the TDE protector is encrypted by a key that is managed by the data owner (Customer-managed key).

Similar

• Internal
  • ID: dec-c-7861ef38

Sub Sections

Section	Sub Sections	Internal Rules	Policies	Flags	Compliance

Policies (1)

Policy	Logic Count	Flags	Compliance
🛡️ Azure SQL Server Transparent Data Encryption Protector is not encrypted with Customer-managed key🟢	1	🟢 x6	no data

Internal Rules

Rule	Policies	Flags
✉️ dec-x-230b5e35	1