Could not decrypting encrypted DCPs

[unfortunatebi]

Hello everyone, Here's the things, I created a chain certificate for them, and based on the certificate I provided they gave me the DKDM, which contains two files. like this:
1.<KDM_maestro_4255295_d274b185-2ef0-4bd4-9906-9f923b4181b3.xml>
2.<Videoname_FTR_S_FR-XX_51_2K_20231110_SMPTE_OV.xml>

Then I add the first file and found that DCP-o-matic shows:
Could not load KDM
This KDM was made for DCP-o-matic but not for its leaf certificate. (Could not decrypt KDM (error:02000079:rsa routines::oaep decoding error) (256/2048))

Add the second file shows:
Could not load KDM
Could not parse KDM(unrecognised root node CompositionPlaylist(expecting DCinemaSecurityMessage))

So I don't know how to use the two files they gave me to decrypt the DCP.
Please help me, thank you all.

[carl]

It sounds like they made the KDM for the wrong certificate. I would suggest sending them only the leaf certificate from DCP-o-matic, and asking them to remake the DKDM.