usbadm(1): administrate pam_usb PAM module

NAME

help [command]: display action description and usage. If an argument is supplied, print the specific action description and usage, else print the action list summary.
keygen <mntpoint> <user> <bits>: generate per host private/public DSA key pair. Required arguments are: the mountpoint where you mounted the device, the user you want to generate a couple of keys for, and the number of bits the key should be generated with.
cipher <mntpoint> <user> [algorithm]: Manage the cipher for the private key. Can be used for encrypt, decrypt or change password for the private key. See below for the mountpoint and the user. If no algorithm were supplited, you'll be prompted for one. It supports every algoritgm OpenSSL manage (blowfish and 3des among others). If algorithm is none, it'll decrypt the private key and no password will be prompted anymore.
addserial [serial number]: Allows the specified serial number. If none were specified, it'll try to probe the plugged device's one and to allow it.