NAME

    Crypt::Fernet - Perl extension for Fernet (symmetric encryption)

SYNOPSIS

      use Crypt::Fernet;
    
      my $key = Crypt::Fernet::generate_key();
      my $plaintext = 'This is a test';
      my $token = Crypt::Fernet::encrypt($key, $plaintext);
      my $verify = Crypt::Fernet::verify($key, $token);
      my $decrypttext = Crypt::Fernet::decrypt($key, $token);
    
      my $old_key = 'cJ3Fw3ehXqef-Vqi-U8YDcJtz8Gv-ZHyxultoAGHi4c=';
      my $old_token = 'gAAAAABT8bVcdaked9SPOkuQ77KsfkcoG9GvuU4SVWuMa3ewrxpQdreLdCT6cc7rdqkavhyLgqZC41dW2vwZJAHLYllwBmjgdQ==';
    
      my $ttl = 10;
      my $old_verify = Crypt::Fernet::verify($old_key, $old_token, $ttl);
      my $old_decrypttext = Crypt::Fernet::decrypt($old_key, $old_token, $ttl);
    
      my $ttl_verify = Crypt::Fernet::verify($key, $token, $ttl);
      my $ttl_decrypttext = Crypt::Fernet::decrypt($key, $token, $ttl);

DESCRIPTION

    Fernet provides guarantees that a message encrypted using it cannot be
    manipulated or read without the key. Fernet is an implementation of
    symmetric (also known as "secret key") authenticated cryptography. This
    is the Perl Implementation

    More Detail: https://github.com/fernet/spec/blob/master/Spec.md

 EXPORT

    None by default.

SEE ALSO

    More Detail on the Fernet Spec:
    https://github.com/fernet/spec/blob/master/Spec.md

    Source of this project: https://github.com/wanleung/Crypt-Fernet

DEPENDENCIES

    This module requires these other modules and libraries:

      use Crypt::CBC;
      use Digest::SHA qw(hmac_sha256);
      use MIME::Base64::URLSafe;

AUTHOR

    Wan Leung Wong, <me@wanleung.com>

COPYRIGHT AND LICENSE

    The MIT License (MIT)

    Copyright (C) 2014 LinkOmnia Ltd (Wan Leung Wong
    wanleung@linkomnia.com)

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the
    "Software"), to deal in the Software without restriction, including
    without limitation the rights to use, copy, modify, merge, publish,
    distribute, sublicense, and/or sell copies of the Software, and to
    permit persons to whom the Software is furnished to do so, subject to
    the following conditions:

    The above copyright notice and this permission notice shall be included
    in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
    IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
    CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
    TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
    SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

