Section: gnutls (3)
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gnutls_x509_crt_get_key_purpose_oid - This function returns the Certificate'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);
- 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
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 (188.8.131.52) 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.
Report bugs to <firstname.lastname@example.org>.
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