>>The bouncycastle fails with the same message . BTW
>
>This means I would end up and could with the utility I am using.I would be very interested to know what the cause is when you will find it.

ok it was two separate issues.

The portable PGP I needed to add the public key to the key ring. The bouncycastle was just a wrong path to the public key file causing the code to throw an error..