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Cryptographic Functions (Transact-SQL)

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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