This section documents the alternative interface to asymmetric cryptography (ac) that is not based on S-expressions, but on native C data structures. As opposed to the pk interface described in the former chapter, this one follows an open/use/close paradigm like other building blocks of the library.
This interface has a few known problems; most noteworthy an inherent tendency to leak memory. It might not be available in forthcoming versions of Libgcrypt.