Plack::Middleware::SignedCookies This middleware modifies "Cookie" headers in the request and "Set-Cookie" headers in the response. It appends a HMAC digest to outgoing cookies and removes and verifies it from incoming cookies. It rejects incoming cookies that were sent without a valid digest. The incoming "Cookie" header value remains available in the "signedcookies.orig" key in the PSGI environment. INSTALLATION This is a Perl module distribution. It should be installed with whichever tool you use to manage your installation of Perl, e.g. any of cpanm . cpan . cpanp -i . Consult http://www.cpan.org/modules/INSTALL.html for further instruction. Should you wish to install this module manually, the procedure is perl Makefile.PL make make test make install COPYRIGHT AND LICENSE This software is copyright (c) 2020 by Aristotle Pagaltzis. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.