permission denied when ed25519 keys are used for rhcos node

Solution Verified - Updated -

Issue

  • We are using ed25519 keys during OpenShift installation for the rhcos nodes and generating keys using.
 $ ssh-keygen -t ed25519 -N '' -f <path> 
  • The bootstrap.ign includes the public key but once the boot finishes boot up, there is a permission denied message while accessing the node.
ssh core@x.x.x.x
core@x.x.x.x: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

Environment

  • Red Hat OpenShift Container Platform
    • 4.4+

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