Authen::OATH(3) OATH One Time Passwords

VERSION

Version 1.0.0

SYNOPSIS

Implementation of the HOTP and TOTP One Time Password algorithms as defined by OATH (http://www.openauthentication.org)

All necessary parameters are set by default, though these can be overridden. Both totp() and htop() have passed all of the test vectors defined in the RFC documents for TOTP and HOTP.

totp() and hotp() both default to returning 6 digits and using SHA1. As such, both can be called by passing only the secret key and a valid OTP will be returned.


use Authen::OATH;
my $oath = Authen::OATH->new();
my $totp = $oath->totp( "MySecretPassword" );
my $hotp = $oath->hotp( "MyOtherSecretPassword" );

Parameters may be overridden when creating the new object: 

    my $oath = Authen::OATH->new( 'digits' => 8 );

The three parameters are ``digits'', ``digest'', and ``timestep.'' Timestep only applies to the totp() function.

While strictly speaking this is outside the specifications of HOTP and TOTP, you can specify digests other than SHA1. For example: 

    my $oath = Authen::OATH->new( "digits" => 10,
                                  "digest" => "Digest::MD6"
    );

SUBROUTINES/METHODS

totp

    my $otp = $oath->totp( $secret [, $manual_time ] );

Manual time is an optional parameter. If it is not passed, the current time is used. This is useful for testing purposes.

hotp

    my $opt = $oath->hotp( $secret, $counter );

Both parameters are required.

_process

This is an internal routine and is never called directly.

AUTHOR

Kurt Kincaid, "<kurt.kincaid at gmail.com>"

BUGS

Please report any bugs or feature requests to "bug-authen-totp at rt.cpan.org", or through the web interface at <http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Authen-OATH>. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command. 

    perldoc Authen::OATH

You can also look for information at:

ACKNOWLEDGEMENTS

LICENSE AND COPYRIGHT

Copyright 2010 Kurt Kincaid.

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.

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