DROP SIGNATURE (Transact-SQL)
DROP [ COUNTER ] SIGNATURE FROM module_name
BY <crypto_list> [ ,...n ]
| ASYMMETRIC KEY Asym_key_name
Is the name of a stored procedure, function, assembly, or trigger.
- CERTIFICATE cert_name
Is the name of a certificate with which the stored procedure, function, assembly, or trigger is signed.
- ASYMMETRIC KEY Asym_key_name
Is the name of an asymmetric key with which the stored procedure, function, assembly, or trigger is signed.
Information about signatures is visible in the sys.crypt_properties catalog view.
Requires ALTER permission on the object and CONTROL permission on the certificate or asymmetric key. If an associated private key is protected by a password, the user also must have the password.
The following example removes the signature of certificate HumanResourcesDP from the stored procedure HumanResources.uspUpdateEmployeeLogin.
DROP SIGNATURE FROM HumanResources.uspUpdateEmployeeLogin
BY CERTIFICATE HumanResourcesDP;
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