NAME gnutls_x509_crt_get_key_purpose_oid - API function
SYNOPSIS #include <gnutls/x509.h>
int gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t cert, int indx, void * oid, size_t * sizeof_oid, unsigned int * critical);
ARGUMENTS gnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure
int indx This specifies which OID to return. Use zero to get the first one.
void * oid a pointer to a buffer to hold the OID (may be null)
size_t * sizeof_oid initially holds the size of oid
unsigned int * critical output flag to indicate criticality of extension
DESCRIPTION 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 (18.104.22.168) See the GNUTLS_KP_* definitions for human readable names.
If oid is null then only the size will be filled.
RETURNS GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough, and in that case the *sizeof_oid will be updated with the required size. On success 0 is returned.
REPORTING BUGS Report bugs to <firstname.lastname@example.org>. GnuTLS home page: http://www.gnu.org/software/gnutls/ General help using GNU software: http://www.gnu.org/gethelp/
COPYRIGHT Copyright © 2008 Free Software Foundation. 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.
SEE ALSO The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command
should give you access to the complete manual.