gnutls_x509_crt_get_key_purpose_oid man page on FreeBSD
gnutls_x509_crt_get_key_purpose_oid - This function returns the Cer‐
tificate's key purpose OIDs
int gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t cert, int
indx, void * oid, size_t * sizeof_oid, unsigned int * critical);
should contain a gnutls_x509_crt_t structure
int indx This specifies which OID to return. Use zero to get the
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
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 (22.214.171.124) See the GNUTLS_KP_* definitions for human
If oid is null then only the size will be filled.
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.
Report bugs to <email@example.com>. GnuTLS home page:
http://www.gnu.org/software/gnutls/ General help using GNU software:
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.
The full documentation for gnutls is maintained as a Texinfo manual.
If the info and gnutls programs are properly installed at your site,
should give you access to the complete manual.
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