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** Changed in: gnome-keyring
       Status: Unknown => Confirmed

** Changed in: gnome-keyring
   Importance: Unknown => Medium

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https://bugs.launchpad.net/bugs/1464296

Title:
  Ubuntu unable to handle ssh keys with PBKDF

Status in GNOME keyring services:
  Confirmed
Status in gnome-keyring package in Ubuntu:
  Triaged

Bug description:
  Today I wanted to upgrade the security of my SSH keys to use PBKDF.
  After struggling with ssh-agent I realised that either Gnome Keyring
  was unable to handle the new ssh key or it was a problem with ssh-
  agent.

  After troubleshooting historic bugs with ssh-agent I was unable to
  make it work. It always returned the error "Agent admitted failure to
  sign using the key on big endian machines"

  The problem seems to be that Gnome Keyring is unable to handle the
  complex newly encoded passphrase.

  Steps to reproduce:

  1. Create a SSH key with PBKDF

  ssh-keygen -b 4096 -o -a 500

  2. Either overwrite or create new keys with default identity id_rsa
  3. Protect it with a strong password (256-But Hex Key)
  4. Delete previous keys stored by ssh-agent

  ssh-add -D (for manual entries)
  ssh-add -d (for automatic entries)

  5. Reset ssh-agent to be extra confident that ssh-agent is not storing
  anything in memory

  killall ssh-agent; eval `ssh-agent`

  6. Add the new key

  ssh-add

  7. You may get an error when trying to use keys to ssh a server saying
  "Agent admitted failure to sign using the key on big endian machines"

  Disabling ssh-agent means that I'm able to input password in console
  and use my private key. I can then log in to my server OK. So I don't
  think there are  problems with the generation of keys either

  
  About my machine:
  Ubuntu 15.04

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