Feature request: Extract and compare literal data from signed OpenPGP messages
See #211 (closed) for the motivation.
For the most basic support, not supporting compressed or encrypted messages, this extraction is possible with some custom code. See https://gitlab.com/sequoia-pgp/pgpcat for inspiration.
For dealing with compressed and/or encrypted messages, using an existing PGP implementation is likely the only way to go. For example, there is a pure Python implementation called PGPy.
These are two signed uncompressed OpenPGP messages containing a tarball: