This is Perl module Crypt::OpenSSL::RC4. INSTALLATION Crypt::OpenSSL::RC4 installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan Crypt::OpenSSL::RC4 Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION Crypt::OpenSSL::RC4 documentation is available as in POD. So you can do: % perldoc Crypt::OpenSSL::RC4 to read the documentation online with your favorite pager. Default Name