YKPAMCFG(1) | Yubico PAM Module Manual | YKPAMCFG(1) |
NAME¶
ykpamcfg - Manage user settings for the Yubico PAM moduleSYNOPSIS¶
ykmapcfg [-1 | -2] [-A] [-p] [-i] [-v] [-h]OPTIONS¶
-1use slot 1. This is the default.
-2
use slot 2.
-A action
choose action to perform. See ACTIONS below.
-p path
specify output file for, default is
~/.yubico/challenge
-i iterations
number of iterations to use for pbkdf2 of expected
response
-v
enable verbose mode.
ACTIONS¶
add_hmac_chalresp¶
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. 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). 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. To use the system-wide mode, you currently have to move the generated state files manually and configure the PAM module accordingly.EXAMPLES¶
First, program a YubiKey for challenge response on Slot 2 :$ ykpersonalize -2 -ochal-resp -ochal-hmac -ohmac-lt64 -oserial-api-visible ... Commit? (y/n) [n]: y
$ ykpamcfg -2 -v ... Stored initial challenge and expected response in '/home/alice/.yubico/challenge-123456'.
auth required pam_unix.so nullok_secure try_first_pass auth [success=1 new_authtok_reqd=ok ignore=ignore default=die] pam_yubico.so mode=challenge-response auth requisite pam_deny.so auth required pam_permit.so auth optional pam_ecryptfs.so unwrap
BUGS¶
Report ykpamcfg bugs in the issue tracker: https://github.com/Yubico/yubico-pam/issuesSEE ALSO¶
pam_yubico(8) The yubico-pam home page: https://developers.yubico.com/yubico-pam/ YubiKeys can be obtained from Yubico: http://www.yubico.com/Version 2.17 | yubico-pam |