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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

Encryption Hashing

HASHBYTES

Copying Certificates

CERTENCODED (Transact-SQL)

CERTPRIVATEKEY (Transact-SQL)

See Also

Reference

Built-in Functions (Transact-SQL)

CREATE CERTIFICATE (Transact-SQL)

CREATE SYMMETRIC KEY (Transact-SQL)

CREATE ASYMMETRIC KEY (Transact-SQL)

Security Catalog Views (Transact-SQL)

Concepts

Encryption Hierarchy

Permissions Hierarchy (Database Engine)