SIGNBYCERT (Transact-SQL)
Applies to:
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Signs text with a certificate and returns the signature.
Transact-SQL syntax conventions
Syntax
SignByCert ( certificate_ID , @cleartext [ , 'password' ] )
Note
To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation.
Arguments
certificate_ID
Is the ID of a certificate in the current database. certificate_ID is int.
@cleartext
Is a variable of type nvarchar, char, varchar, or nchar that contains data that will be signed.
' password '
Is the password with which the certificate's private key was encrypted. password is nvarchar(128).
Return Types
varbinary with a maximum size of 8,000 bytes.
Remarks
Requires CONTROL permission on the certificate.
Examples
The following example signs the text in @SensitiveData
with certificate ABerglundCert07
, having first decrypted the certificate with password "pGFD4bb925DGvbd2439587y". It then inserts the cleartext and the signature in table SignedData04
.
DECLARE @SensitiveData NVARCHAR(max);
SET @SensitiveData = N'Saddle Price Points are
2, 3, 5, 7, 11, 13, 17, 19, 23, 29';
INSERT INTO [SignedData04]
VALUES( N'data signed by certificate ''ABerglundCert07''',
@SensitiveData, SignByCert( Cert_Id( 'ABerglundCert07' ),
@SensitiveData, N'pGFD4bb925DGvbd2439587y' ));
GO
See Also
VERIFYSIGNEDBYCERT (Transact-SQL)
CERT_ID (Transact-SQL)
CREATE CERTIFICATE (Transact-SQL)
ALTER CERTIFICATE (Transact-SQL)
DROP CERTIFICATE (Transact-SQL)
Encryption Hierarchy