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Hardware authentication for Linux using ordinary USB Flash Drives.

branch: master

Merge pull request #10 from georghopp/pad_filename_fix

when creating system pad file change all occurences of / in the device n...
latest commit 6a30dff1fd
Andrea Luzzardi authored


pam_usb provides hardware authentication for Linux using ordinary USB Flash Drives.

It works with any application supporting PAM, such as su and login managers (GDM, KDM).


  • Password-less authentication. Use your USB stick for authentication, don't type passwords anymore.
  • Device auto probing. You don't need to mount the device, or even to configure the device location (sda1, sdb1, etc). will automatically locate the device using UDisks and access its data by itself.
  • Two-factor authentication. Achieve greater security by requiring both the USB stick and the password to authenticate the user.
  • Non-intrusive. pam_usb doesn't require any modifications of the USB storage device to work (no additional partitions required).
  • USB Serial number, model and vendor verification.
  • Support for One Time Pads authentication.
  • You can use the same device accross multiple machines.
  • Support for all kind of removable devices (SD, MMC, etc).


  • pamusb-agent: trigger actions (such as locking the screen) upon device authentication and removal.
  • pamusb-conf: configuration helper.
  • pamusb-check: integrate pam_usb's authentication engine within your scripts or applications.

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