gnutls_x509_crt_get_key_purpose_oid3
Api function
Usage
#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);
Arguments
gnutls_x509_crt_t cert
|
should contain a |
|---|---|
unsigned indx
|
This specifies which OID to return. Use (0) to get the first one. |
void * oid
|
a pointer to a buffer to hold the OID (may be null) |
size_t * oid_size
|
initially holds the size of oid |
unsigned int * critical
|
output flag to indicate criticality of extension |
Overview
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.
Returns
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.
Releases
10 releases since Debian 4.0 (Etch); the text changed 9 times.