Provided by: gnutls-doc_3.0.11+really2.12.14-5ubuntu3_all
gnutls_openpgp_crt_get_preferred_key_id - API function
#include <gnutls/openpgp.h> int gnutls_openpgp_crt_get_preferred_key_id(gnutls_openpgp_crt_t key, gnutls_openpgp_keyid_t keyid);
gnutls_openpgp_crt_t key the structure that contains the OpenPGP public key. gnutls_openpgp_keyid_t keyid the struct to save the keyid.
Get preferred key id. If it hasn't been set it returns GNUTLS_E_INVALID_REQUEST.
the 64-bit preferred keyID of the OpenPGP key.
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