I have used this package for years and only recently have I had any problems. It does what it says on the tin and the documentation and samples make it easy to use but not to install. The main problem is whenever I upgrade Perl these days I get an error which is basically to do with the use of scalars and strict. This can be overcome by installing the Scalar::List::Utils package which you should download and install from source separately and keep so you can re-install it next time you upgrade Perl. The other problem was getting hold of the pari package which disappeared for a while so now I keep a copy of the distribution just in case. I mainly use it for encrypting emails using GnuPG keys without having to enter a password. GnuPG unfortunately lacks a simple interface for this since you can not pipe data in and out and use your keys to encrypt. If you could, it would virtually make all these types of modules redundant since a simple system call would do the job.
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