This is Perl module Acme::JWT.
INSTALLATION
Acme::JWT installation is straightforward. If your CPAN shell is set up,
you should just be able to do
% cpan Acme::JWT
Download it, unpack it, then build it as per the usual:
% perl Makefile.PL
% make && make test
Then install it:
% make install
DOCUMENTATION
Acme::JWT documentation is available as in POD. So you can do:
% perldoc Acme::JWT
to read the documentation online with your favorite pager.
JWT specification
http://self-issued.info/docs/draft-jones-json-web-token.html
NAGAYA Shinichiro