A simple library to perform a subset of the operations defined by PGP (RFC #4880). Its primary use for yours truly is to verify signatures created by GPG and, at a later date, to generate them.
libsign requires GMP - an arbitrary precision library - to work.
Apart from a C-compiler and make, the build system of libsign also requires CMake in order to check the dependencies and create the build-files you need.
Please have a look at some of the tests in the "tests/" directory for some examples of use. The API is subject to change without any notice.