gnutls_openpgp_crt_get_auth_subkey man page

gnutls_openpgp_crt_get_auth_subkey — API function


#include <gnutls/openpgp.h>

int gnutls_openpgp_crt_get_auth_subkey(gnutls_openpgp_crt_t crt, gnutls_openpgp_keyid_t keyid, unsigned int flag);


gnutls_openpgp_crt_t crt
the structure that contains the OpenPGP public key.
gnutls_openpgp_keyid_t keyid
the struct to save the keyid.
unsigned int flag
Non-zero indicates that a valid subkey is always returned.


Returns the 64-bit keyID of the first valid OpenPGP subkey marked for authentication. If flag is non-zero and no authentication subkey exists, then a valid subkey will be returned even if it is not marked for authentication.


GNUTLS_E_SUCCESS on success, or an error code.

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