Cryptographic Functions (Transact-SQL)

The following functions support encryption, decryption, digital signing, and the validation of digital signatures.

Symmetric Encryption and Decryption

EncryptByKey	DecryptByKey
EncryptByPassPhrase	DecryptByPassPhrase
Key_ID	Key_GUID

Asymmetric Encryption and Decryption

EncryptByAsmKey	DecryptByAsmKey
EncryptByCert	DecryptByCert
Cert_ID	AsymKey_ID
CertProperty

Signing and Signature Verification

SignByAsymKey	VerifySignedByAsmKey
SignByCert	VerifySignedByCert

Symmetric Decryption with Automatic Key Handling

DecryptByKeyAutoCert

See Also

Reference

Functions (Transact-SQL)
CREATE CERTIFICATE (Transact-SQL)
CREATE SYMMETRIC KEY (Transact-SQL)
CREATE ASYMMETRIC KEY (Transact-SQL)
Security Catalog Views (Transact-SQL)

Other Resources

Encryption Hierarchy
Permissions Hierarchy

Help and Information

Getting SQL Server 2005 Assistance