How to convert ed25519 private key to putty ppk?
Update 2019-03-20: https://www.chiark.greenend.org.uk/~sgtatham/putty/releases/0.71.html supports these keys At the time of writing this, the puttygen snapshot from https://www.chiark.greenend.org.uk/~sgtatham/putty/snapshot.html seems to support these keys where 0.70 did not. It’s not explicitly mentioned in the changelog. I tested Development snapshot 2019-01-17.53747ad