GPGME has a couple of advantages over other libraries doing
a similar job, and over implementing support for GnuPG or other crypto
engines into your application directly.
- it's free software
- Anybody can use, modify, and redistribute it under the terms of the GNU
Lesser General Public License (see Library Copying).
- it's flexible
- GPGME provides transparent support for several cryptographic
protocols by different engines. Currently, GPGME supports
the OpenPGP protocol using GnuPG as the backend, and the Cryptographic
Message Syntax using GpgSM as the backend.
- it's easy
- GPGME hides the differences between the protocols and
engines from the programmer behind an easy-to-use interface. This way
the programmer can focus on the other parts of the program, and still
integrate strong cryptography in his application. Once support for
GPGME has been added to a program, it is easy to add support
for other crypto protocols once GPGME backends provide them.