I've encountered strange bug when using SSH in Ubuntu 14.04: it won't offer the PIV key to the server even though it sees it.
OpenSSH_6.6.1, OpenSSL 1.0.1f 6 Jan 2014
debug1: Reading configuration data /home/XXXXXXX
debug1: /home/XXXXXXX line 138: Applying options for host
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Hostname has changed; re-reading configuration
debug1: Reading configuration data /home/XXXXX
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to XXXXXXX [XXXXXXXX] port NNNN.
debug1: Connection established.
debug1: manufacturerID <OpenSC (www.opensc-project.org)> cryptokiVersion 2.20 libraryDescription <Smart card PKCS#11 API> libraryVersion 0.0
debug1: label <PIV_II (PIV Card Holder pin)> manufacturerID <piv_II> model <PKCS#15 emulate> serial <00000000> flags 0x40d
debug1: have 1 keys
debug1: pkcs11_provider_unref: 0x7f0c65728510 refcount 2
debug1: identity file /home/XXXXXXX type 1
debug1: identity file /home/XXXXXXX type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2.3
debug1: Remote protocol version 2.0, remote software version OpenSSH_5.3
debug1: match: OpenSSH_5.3 pat OpenSSH_5* compat 0x0c000000
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-ctr hmac-md5 none
debug1: kex: client->server aes128-ctr hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<3072<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Server host key: RSA 2e:47:2d:9b:da:a6:eb:b3:7c:dd:89:32:7e:9f:14:18
debug1: checking without port identifier
debug1: Host 'XXXXXXXX' is known and matches the RSA host key.
debug1: Found key in /home/XXXXXX
debug1: found matching key w/out port
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/XXXXXX
debug1: Server accepts key: pkalg ssh-rsa blen 277
debug1: Authentication succeeded (publickey).
The token is clearly recognized, it sees there is one key present, nevertheless server doesn't get it offered. I've tried also adding PKCS#11 library via ssh-add, but to no avail.
Other smartcard (Feitian ePass 2003) worked with the same ssh and PKCS#11 library. The PIV token works on other machine with Scientific Linux 6.7. I can't figure out what makes the difference.
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