The following can be used as a template for signing procedures which removes the need for executing as owner and database chaining
–create a test login
CREATE LOGIN test WITH PASSWORD =’abc’, CHECK_POLICY = OFF
GO
–create a test proc
CREATE PROC test_proc
AS
SELECT * FROM sys.dm_exec_query_memory_grants
GO
GRANT EXEC ON test_proc TO PUBLIC
CREATE CERTIFICATE [CodeSigningCertificate]
ENCRYPTION BY PASSWORD = ‘Password123!’
WITH EXPIRY_DATE = ‘2099-01-01’,
SUBJECT = ‘Code Signing Cert’
CREATE LOGIN [CodeSigningLogin] FROM CERTIFICATE [CodeSigningCertificate]
GRANT VIEW SERVER STATE TO [CodeSigningLogin]
ADD SIGNATURE TO test_proc
BY CERTIFICATE [CodeSigningCertificate]
WITH PASSWORD = ‘Password123!’;
–Clean Up
/*
DROP PROC dbo.test_proc
DROP LOGIN [CodeSigningLogin]
DROP CERTIFICATE [CodeSigningCertificate]
DROP LOGIN test
*/