What you use for Compat depends entirely on what program your colleague is using to decrypt. The OpenPGP standard allows for a comment in the first line, which is generally used to store information about the program that generated it, but Crypt::OpenPGP doesn't appear to save this information. It would be difficult to extract meaningful data from it, anyway.

The best option is to get everyone on a program that can understand the same block cipher. 3DES is a good choice; it's old and slow, but it's supported by just about everyone, and it's been pounded on for 20+ years and brute force is still the most efficent known way to break it.

----
I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

: () { :|:& };:

Note: All code is untested, unless otherwise stated

In reply to Re: Re: Re: Crypt::OpenPGP - determining which cipher to use by hardburn
in thread Crypt::OpenPGP - determining which cipher to use by hv

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