Getting BAD signature for ostree show command

[bhaijiyunus]

Hello Experts,

I am working on ostree for ARM based target device. We have sample development GPG key from which we can successfully sign the ostree commit on host system. On ARM based target device ostree signature verification is successful with sample GPG key.

We have another GPG keys which we got from our PKI team. With the PKI GPG key I am able to sign the ostree commit on host system but on ARM based target device it shows "BAD signature from "

I am using below ostree command on host system to sign the ostree commit.
ostree gpg-sign --repo=ostree_repo --gpg-homedir /home/jbhaijy/.gnupg/ <OSTREE_COMMIT> <KEY-ID>

Could you please tell me what all the possible reasons for "BAD signature" & how should I resolve/debug this issue.

Thanks,
jbhaijy