rnp

RNP is a set of OpenPGP (RFC4880) tools

RNP is a set of OpenPGP (RFC4880) tools that works on Linux, macOS, Windows and *BSD built with C++. rnpkeys allow to generate, import, export, and list keys. rnp is used to perform encryption, decryption, signing and signature checks. librnp is the library used by RNP for all OpenPGP functions, useful for developers to build against, different from GPGME.