Well, you have two problems: How to decrypt and how to parse the proprietary format.

How to decrypt is not that difficult. There are CPAN modules for AES, for example Crypt::OpenSSL::AES or Crypt::Rijndael, or you could look for standalone programs (gpg?) you can call from perl. Google is your friend.

Parsing the proprietary format is probably more difficult, and often quite tedious. Hopefully someone else did it already

In reply to Re: Decrypt a file with known algo and password by jethro
in thread Decrypt a file with known algo and password by pileofrogs

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