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81 lines
2.5 KiB
Plaintext
81 lines
2.5 KiB
Plaintext
YKPAMCFG(1)
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=========
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:doctype: manpage
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:man source: yubico-pam
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:man manual: Yubico PAM Module Manual
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== NAME
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ykpamcfg - Manage user settings for the Yubico PAM module
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== SYNOPSIS
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*ykmapcfg* [-1 | -2] [-A] [-p] [-i] [-v] [-V] [-h]
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== OPTIONS
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*-1*::
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use slot 1. This is the default.
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*-2*::
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use slot 2.
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*-A* _action_::
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choose action to perform. See ACTIONS below.
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*-p* _path_::
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specify output file for, default is ~/.yubico/challenge
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*-i* _iterations_::
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number of iterations to use for pbkdf2 of expected response
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*-v*::
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enable verbose mode.
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*-V*::
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display version and exit
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*-h*::
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display help and exit
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== ACTIONS
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=== add_hmac_chalresp
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The PAM module can utilize the HMAC-SHA1 Challenge-Response mode found in YubiKeys starting with version 2.2 for *offline authentication*. This action creates the initial state information with the C/R to be issued at the next logon.
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The utility currently outputs the state information to a file in the current user's home directory (_\~/.yubico/challenge-123456_ for a YubiKey with serial number API readout enabled, and _~/.yubico/challenge_ for one without).
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The PAM module supports a system wide directory for these state files (in case the user's home directories are encrypted), but in a system wide directory, the 'challenge' part should be replaced with the username. Example : _/var/yubico/challenges/alice-123456_.
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To use the system-wide mode, you currently have to move the generated state files manually and configure the PAM module accordingly.
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== EXAMPLES
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First, program a YubiKey for challenge response on Slot 2 :
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$ ykpersonalize -2 -ochal-resp -ochal-hmac -ohmac-lt64 -oserial-api-visible
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...
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Commit? (y/n) [n]: y
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Now, set the current user to require this YubiKey for logon :
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$ ykpamcfg -2 -v
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...
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Stored initial challenge and expected response in '/home/alice/.yubico/challenge-123456'.
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Then, configure authentication with PAM for example like this (_make a backup first_) :
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_/etc/pam.d/common-auth_ (from Ubuntu 10.10) :
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auth required pam_unix.so nullok_secure try_first_pass
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auth [success=1 new_authtok_reqd=ok ignore=ignore default=die] pam_yubico.so mode=challenge-response
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auth requisite pam_deny.so
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auth required pam_permit.so
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auth optional pam_ecryptfs.so unwrap
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== BUGS
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Report ykpamcfg bugs in the issue tracker: https://github.com/Yubico/yubico-pam/issues
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== SEE ALSO
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*pam_yubico*(8)
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The yubico-pam home page: https://developers.yubico.com/yubico-pam/
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YubiKeys can be obtained from Yubico: http://www.yubico.com/
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