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EncryptByCert (Transact-SQL)
SQL Server 2005
Encrypts data with the public key of a certificate.
Transact-SQL Syntax Conventions
This function encrypts data with the public key of a certificate. The ciphertext can only be decrypted with the corresponding private key. Such asymmetric transformations are very costly compared to encryption and decryption using a symmetric key. Asymmetric encryption is therefore not recommended when working with large datasets such as user data in tables.
This example encrypts the plaintext stored in @cleartext with the certificate called JanainaCert02. The encrypted data is inserted into table ProtectedData04.
INSERT INTO [AdventureWorks].[ProtectedData04]
values( N'data encrypted by certificate ''Shipping04''',
EncryptByCert(Cert_ID('JanainaCert02'), @cleartext) );
GO
