gnutls_x509_crt_get_issuer_alt_name - API function
int gnutls_x509_crt_get_issuer_alt_name(gnutls_x509_crt_t cert,
unsigned int seq, void * ian, size_t *
ian_size, unsigned int * critical);
- gnutls_x509_crt_t cert
- should contain a gnutls_x509_crt_t type
- unsigned int seq
- specifies the sequence number of the alt name (0 for the first one, 1 for
the second etc.)
- void * ian
- is the place where the alternative name will be copied to
- size_t * ian_size
- holds the size of ian.
- unsigned int * critical
- will be non-zero if the extension is marked as critical (may be null)
This function retrieves the Issuer Alternative Name (22.214.171.124), contained in
the given certificate in the X509v3 Certificate Extensions.
When the SAN type is otherName, it will extract the data in the otherName's
value field, and GNUTLS_SAN_OTHERNAME
is returned. You may use
to get the
corresponding OID and the "virtual" SAN types (e.g.,
If an otherName OID is known, the data will be decoded. Otherwise the returned
data will be DER encoded, and you will have to decode it yourself. Currently,
only the RFC 3920 id-on-xmppAddr Issuer AltName is recognized.
the alternative issuer name type on success, one of the enumerated
. It will return
is not large enough to
hold the value. In that case ian_size
will be updated with the required
size. If the certificate does not have an Alternative name with the specified
sequence number then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE
Report bugs to <email@example.com>.
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