gnutls_x509_crt_get_key_purpose_oid(3) | gnutls | gnutls_x509_crt_get_key_purpose_oid(3) |
gnutls_x509_crt_get_key_purpose_oid - API function
#include <gnutls/x509.h>
int gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t cert, unsigned indx, void * oid, size_t * oid_size, unsigned int * critical);
This function will extract the key purpose OIDs of the Certificate specified by the given index. These are stored in the Extended Key Usage extension (2.5.29.37) See the GNUTLS_KP_* definitions for human readable names.
If oid is null then only the size will be filled. The oid returned will be null terminated, although oid_size will not account for the trailing null.
GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough, and in that case the *oid_size will be updated with the required size. On success 0 is returned.
Report bugs to <bugs@gnutls.org>.
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