rnp_list_keys Enumerate all keys present in a keyring by specified identifer type &reftitle.description; arrayfalsernp_list_keys RnpFFIffi stringidentifier_type &reftitle.parameters; ffi &rnp.parameter.ffi-description; identifier_type Key identifier type ("userid", "keyid", "grip", "fingerprint"). &reftitle.returnvalues; An associative array where key is an identifier string and value is a PGP key fingerprint&return.falseforfailure;.