Kryptering af databasetabeller i SQL Server 2008

Du har forskellige muligheder her.

• Du kan bruge symmetrisk kryptering til dine data:

  OPRET TABELsalg (...)

Opret symmetrisk nøgle:

CREATE CERTIFICATE cert_sales WITH SUBJECT = N'Sales certificate',
START_DATE = N'2009-01-01', EXPIRY_DATE = N'2018-12-31';

CREATE SYMMETRIC KEY symkey_sales WITH ALGORITHM = AES_256 
ENCRYPTION BY CERTIFICATE cert_sales

Krypter data:

TRUNCATE TABLE sales;
OPEN SYMMETRIC KEY symkey_sales DECRYPTION BY CERTIFICATE cert_sales;
INSERT INTO sales() SELECT a, ENCRYPTBYKEY(Key_Guid(N'symkey_sales'), B) FROM T2;
CLOSE SYMMETRIC KEY symkey_sales;

Dekrypter data:

OPEN SYMMETRIC KEY symkey_sales DECRYPTION BY CERTIFICATE cert_sales;
SELECT a, CAST(DecryptByKey(B) as nvarchar(100)) FROM sales;
CLOSE SYMMETRIC KEY symkey_sales;

• Du kan bruge asymmetrisk kryptering til dine data
• Du kan bruge gennemsigtig datakryptering for kryptering af alle databasefiler:

Opret hovednøgle:

USE master
go
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'My$Strong$Password$123'

Opret certifikat:

CREATE CERTIFICATE DEK_EncCert WITH SUBJECT = 'DEK Encryption Certificate'

Opret DEK:

USE MySecretDB
go
CREATE DATABASE ENCRYPTION KEY WITH ALGORITHM = AES_256
ENCRYPTION BY SERVER CERTIFICATE DEK_EncCert

Slå kryptering til:

ALTER DATABASE MySecretDB SET ENCRYPTION ON

• Du kan bruge BitLocker - komplet volumenkryptering