Question

A proc I have uses a .NET function to decrypt data from the database. However, I’m getting this failure from the database.

A .NET Framework error occurred during execution of user-defined routine or aggregate “[Function name]”:
System.ArgumentNullException: Buffer cannot be null.

Any ideas why?

Thanks.

Answer 1

Found the issue, was passing in a null to the function, and that blew it up. Reversing the way it was called helped to, such as instead of this:

select ..
where fn_decrypt(Field) = @myfield

I changed it to:

declare @myfieldenc ..
set @myfieldenc = fn_encrypt(@myfield)

select ..
where Field = @myfieldenc