4.1.2 Authentication Using OpenPGP Keys

OpenPGP keys also contain public parameters of a public key algorithm, and signatures from several other parties. Depending on whether a signer is trusted the key is considered trusted or not. GnuTLS’s OpenPGP authentication implementation is based on the [TLSPGP] (see section Bibliography) proposal.

See section The OpenPGP Trust Model, for more information about the OpenPGP trust model. For a more detailed introduction to OpenPGP and GnuPG see [GPGH] (see section Bibliography).