paper token =========== paper token is a PDF generator to create paper-based OTP (RFC 4226) token. why? ---- Hardware tokens are very costly and often require a proprietary infrastructure. (near impossible to find HOTP-compatible hardware token without requiring the linked proprietary infrastructure) Software tokens can be also painful and always require a second device like a phone to operate properly. security? --------- Paper is not less secure than an phone running a software token. With a sheet paper and a pencil, you have the control of the token. Do you have the control of your phone and the software running on it? For a negligible cost, you have a token and you just need to protect that sheet of paper. An OTP is just an one-time password and this recommendation makes a lot of sense for the paper-based token too : ``Simply, people can no longer remember passwords good enough to reliably defend against dictionary attacks, and are much more secure if they choose a password too complicated to remember and then write it down. We're all good at securing small pieces of paper. I recommend that people write their passwords down on a small piece of paper, and keep it with their other valuable small pieces of paper: in their wallet. —Bruce Schneier 2005`` perl requirements ----------------- * Authen::HOTP * PDF::API2 * PDF::Table * Getopt::Compact how to use it ============= perl paper-token.pl --output test.pdf --counter 0 --end 200 --secret 3132333435363738393031323334353637383930 --digits 6 sample token (PDF) ================== * [Sample token using test vector from RFC 4226](http://github.com/adulau/paper-token/raw/master/examples/test.pdf) OpenOTP server installation =========================== You have various free software solution to run on the server side for the authentication of the tokens. You can have a look at the setting up of an OpenOTP server to work with those paper-based token. * [For more information](http://www.foo.be/cgi-bin/wiki.pl/SettingOOTP) LICENSE ======= Copyright (C) 2010 Alexandre Dulaunoy, http://www.foo.be/ This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see .