CREATE FUNCTION [usermanagement].[MD5Encript](@str [nvarchar](200))
RETURNS [nvarchar](200) WITH EXECUTE AS CALLER
AS
EXTERNAL NAME [MD5Encryption].[UserDefinedFunctions].[MD5Encript]
GO
It gives error like
Msg 6528, Level 16, State 1, Procedure MD5Encript, Line 1 [Batch Start Line 2]
Assembly 'MD5Encryption' was not found in the SQL catalog of database 'SB'.
Please help