Signal/Whatsapp/etc that use the Signal Protocal are this for messaging.
It turns out solving one problem at a time and ending up with a bunch of purpose-built tools is way easier to get right than trying to jam an entire toolbox into one thing.
>GnuPG Made Easy (GPGME) is a library designed to make access to GnuPG easier for applications. It provides a High-Level Crypto API for encryption, decryption, signing, signature verification and key management. Currently it uses GnuPG's OpenPGP backend as the default, but the API isn't restricted to this engine. We have, in fact, already developed a backend for CMS (S/MIME).
It already exists and it's called Kleopatra. It's developed by KDE with some support from the GPG developers and is part of the Gpg4Win suite.
It's used by quite a few companies and public administrations.
The easier and more productive thing is to make an easy-to-use tool that does a specific workflow vs trying to be a swiss army knife.
https://github.com/FiloSottile/age is this for encrypting files.
https://en.wikipedia.org/wiki/Signify_(OpenBSD) and https://jedisct1.github.io/minisign/ are this for signing files.
Signal/Whatsapp/etc that use the Signal Protocal are this for messaging.
It turns out solving one problem at a time and ending up with a bunch of purpose-built tools is way easier to get right than trying to jam an entire toolbox into one thing.
There's a library wrapper, https://www.gnupg.org/software/gpgme/index.html
>GnuPG Made Easy (GPGME) is a library designed to make access to GnuPG easier for applications. It provides a High-Level Crypto API for encryption, decryption, signing, signature verification and key management. Currently it uses GnuPG's OpenPGP backend as the default, but the API isn't restricted to this engine. We have, in fact, already developed a backend for CMS (S/MIME).
You may be interested in https://sequoia-pgp.org/
It isn't exactly a wrapper, but it has an easier to use interface (as well as a more gpg compatible interface).