Using the KDM generator in your PC should work. 
You created a DKDM in your PC, by default it will create the DKDM for the dcpomatic generated certificate. Your laptop installation generated a different certificate.

Really bad idea deleting your project, the key for decrypting the DCP was in it.

If you are not sure how to use KDMs, reencode your DCP without encryption and forget the KDMs. If you are learning or experimenting, keep working on it!

Manuel AC

On Thu, Jan 19, 2017 at 10:52 PM, Aditya Indo DCP via DCPomatic <dcpomatic@carlh.net> wrote:
Hi Woehl

I have to compare the keys at DOM Preference between my PC and my laptop for generating KDM, the result is failed. How to fix it because I just have the DKDM, the DCP project file I have removed.
Maybe last method i must generating the KDM with my PC?

2017-01-20 1:22 GMT+07:00 Wolfgang Woehl <tito@online.de>:

> On 19 Jan 2017, at 19:11, Aditya Indo DCP via DCPomatic <dcpomatic@carlh.net> wrote:
>
> Dear
>
> I want to create KDM using my laptop with new version of DOM, the DKDM from my PC when i transcode DCP and export the DKDM to my laptop, but message error :
>
> Could not decrypt KDM (error:04065072:rsa rountines:RSA_EAY_PRIVATE_DECRYPT:padding check failed)
>
The most likely cause for the error is that you either

a) used the wrong public key when generating the KDM

or

b) used the wrong private key when decrypting the KDM’s payloads

Best, Wolfgang





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Aditya

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