Loading OpenSSH certificate into ssh-agent without the private key

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I'm storing my ssh keys on a yubikey and hence I don't have any private key file on disk. This gives me a problem when I'm also using OpenSSH Certificates to authenticate. If I would like to bring the certificate with me using the ssh-agent I need to add it to the agent some how.



This is done automatically if I have a private key called priv and a cert called priv-cert.pub. But since I don't have a file I cant find a way to add the certificate file to the agent.



Does anyone have a clue how to do this?



It seems there is no support for this, I found this feature request: https://bugzilla.mindrot.org/show_bug.cgi?id=2472







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    up vote
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    I'm storing my ssh keys on a yubikey and hence I don't have any private key file on disk. This gives me a problem when I'm also using OpenSSH Certificates to authenticate. If I would like to bring the certificate with me using the ssh-agent I need to add it to the agent some how.



    This is done automatically if I have a private key called priv and a cert called priv-cert.pub. But since I don't have a file I cant find a way to add the certificate file to the agent.



    Does anyone have a clue how to do this?



    It seems there is no support for this, I found this feature request: https://bugzilla.mindrot.org/show_bug.cgi?id=2472







    share|improve this question
























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I'm storing my ssh keys on a yubikey and hence I don't have any private key file on disk. This gives me a problem when I'm also using OpenSSH Certificates to authenticate. If I would like to bring the certificate with me using the ssh-agent I need to add it to the agent some how.



      This is done automatically if I have a private key called priv and a cert called priv-cert.pub. But since I don't have a file I cant find a way to add the certificate file to the agent.



      Does anyone have a clue how to do this?



      It seems there is no support for this, I found this feature request: https://bugzilla.mindrot.org/show_bug.cgi?id=2472







      share|improve this question














      I'm storing my ssh keys on a yubikey and hence I don't have any private key file on disk. This gives me a problem when I'm also using OpenSSH Certificates to authenticate. If I would like to bring the certificate with me using the ssh-agent I need to add it to the agent some how.



      This is done automatically if I have a private key called priv and a cert called priv-cert.pub. But since I don't have a file I cant find a way to add the certificate file to the agent.



      Does anyone have a clue how to do this?



      It seems there is no support for this, I found this feature request: https://bugzilla.mindrot.org/show_bug.cgi?id=2472









      share|improve this question













      share|improve this question




      share|improve this question








      edited Dec 7 '17 at 17:13

























      asked Dec 7 '17 at 8:34









      Peter

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          Yubikey documentation mentions that you can add certificates to the ssh-agent here https://developers.yubico.com/PIV/Guides/SSH_user_certificates.html






          share|improve this answer






















          • No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
            – Peter
            Jun 5 at 14:26











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          up vote
          0
          down vote













          Yubikey documentation mentions that you can add certificates to the ssh-agent here https://developers.yubico.com/PIV/Guides/SSH_user_certificates.html






          share|improve this answer






















          • No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
            – Peter
            Jun 5 at 14:26















          up vote
          0
          down vote













          Yubikey documentation mentions that you can add certificates to the ssh-agent here https://developers.yubico.com/PIV/Guides/SSH_user_certificates.html






          share|improve this answer






















          • No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
            – Peter
            Jun 5 at 14:26













          up vote
          0
          down vote










          up vote
          0
          down vote









          Yubikey documentation mentions that you can add certificates to the ssh-agent here https://developers.yubico.com/PIV/Guides/SSH_user_certificates.html






          share|improve this answer














          Yubikey documentation mentions that you can add certificates to the ssh-agent here https://developers.yubico.com/PIV/Guides/SSH_user_certificates.html







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Jun 5 at 14:54









          Kusalananda

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          104k14206324










          answered Jun 5 at 14:13









          Evgeny

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          1,962176











          • No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
            – Peter
            Jun 5 at 14:26

















          • No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
            – Peter
            Jun 5 at 14:26
















          No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
          – Peter
          Jun 5 at 14:26





          No it does not. You can add pkcs11 providers but you cannot add certificate files without a corresponding key file on disk. There is a ticket in OpenSSH Bugzilla about it. bugzilla.mindrot.org/show_bug.cgi?id=2472
          – Peter
          Jun 5 at 14:26


















           

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