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gnutls_x509_key_purpose_get(3)    gnutls   gnutls_x509_key_purpose_get(3)
       gnutls_x509_key_purpose_get - API function
       #include <gnutls/x509-ext.h>
       int gnutls_x509_key_purpose_get(gnutls_x509_key_purposes_t p,
       unsigned idx, gnutls_datum_t * oid);
       gnutls_x509_key_purposes_t p
                   The key purposes
       unsigned idx
                   The index of the key purpose to retrieve
       gnutls_datum_t * oid
                   Will hold the object identifier of the key purpose (to
                   be treated as constant)
       This function will retrieve the specified by the index key purpose
       in the purposes type. The object identifier will be a null
       terminated string.
       On success, GNUTLS_E_SUCCESS (0) is returned,
       GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE if the index is out of
       bounds, otherwise a negative error value.
       3.3.0
       Report bugs to <[email protected]>.
       Home page: https://www.gnutls.org
       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
       Copying and distribution of this file, with or without
       modification, are permitted in any medium without royalty provided
       the copyright notice and this notice are preserved.
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gnutls                            3.8.10   gnutls_x509_key_purpose_get(3)