Although patches were submitted years ago, smart card support in OpenSSH is very recent:
Only OpenSSH version 5.4p1 supports smartcard using PKCS#11 authentication. Furthermore, there is a bug in OpenSSH v5.4p1 release preventing ssh from reading pkcs#11 config in /etc/ssh/ssh_config. Although this is a minor bug, this proves to be tedious.
Therefore we recommand using OpenSSH 5.5p1.
To check OpenSSH version on your computer, running client:
In this example, we are running OpenSSH 5.4p1.
You should upgrade to OpenSSH 5.5p1.
In the tutorial, you will learn how to upgrade OpenSSH.
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