This is Perl module LWP::UserAgent::Keychain.
INSTALLATION
LWP::UserAgent::Keychain installation is straightforward. If your CPAN shell is set up,
you should just be able to do
% cpan LWP::UserAgent::Keychain
Download it, unpack it, then build it as per the usual:
% perl Makefile.PL
% make && make test
Then install it:
% make install
DOCUMENTATION
LWP::UserAgent::Keychain documentation is available as in POD. So you can do:
% perldoc LWP::UserAgent::Keychain
to read the documentation online with your favorite pager.
Tatsuhiko Miyagawa