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[James Bromberger <james@xxxxxxx>]

Public bug reported:

Hi,
Since openssh-server 6.5 there is support for a new host key, ed25519. It appears that cloudinit 0.7.6 doesn't generate this; ed25519 is not listed as a valid key type in ssh_util.py. Is this correct that cloud init doesnt generate this host key, and if so, should this be supported? Generation is easy, on new versions of openssh-server:

ssh-keygen  -f /etc/ssh/ssh_host_ed25519_key -N '' -t ed25519

Thanks.
  James

** Affects: cloud-init
     Importance: Undecided
         Status: New


** Tags: ssh

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https://bugs.launchpad.net/bugs/1463067

Title:
  SSH module to generate ed25519 host keys

Status in Init scripts for use on cloud images:
  New

Bug description:
  Hi,
  Since openssh-server 6.5 there is support for a new host key, ed25519. It appears that cloudinit 0.7.6 doesn't generate this; ed25519 is not listed as a valid key type in ssh_util.py. Is this correct that cloud init doesnt generate this host key, and if so, should this be supported? Generation is easy, on new versions of openssh-server:

  ssh-keygen  -f /etc/ssh/ssh_host_ed25519_key -N '' -t ed25519

  Thanks.
    James

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