Unable to enroll my self-signed keys using "Replace from file" option of "Custom Mode Key Management" on OptiPlex 9010.

Unable to enroll my self-signed keys using "Replace from file" option of "Custom Mode Key Management" on OptiPlex 9010.

It gives error replacing PK/KEK/db key and fails with “Error replacing key. Please make sure that the new key is properly formatted with signature list and serialization headrers” error.

Query # 1- Is it possible to replace PK/KEK/db key with self-signed Openssl CA keys? If yes, please provide supported format details.

If not….

Query # 2- Is it possible to get access to Dell’s ‘test’ keys i.e. private key and public key(which will not give above error)?

Note- Self signed keys are generated using openssl util.

Any help will be greatly appreciated.