dane_verify_crt - API function
int dane_verify_crt(dane_state_t s, const gnutls_datum_t *
chain, unsigned chain_size,
gnutls_certificate_type_t chain_type, const char *
hostname, const char * proto, unsigned int
port, unsigned int sflags, unsigned int
vflags, unsigned int * verify);
- dane_state_t s
- A DANE state structure (may be NULL)
- const gnutls_datum_t * chain
- A certificate chain
- unsigned chain_size
- The size of the chain
- gnutls_certificate_type_t chain_type
- The type of the certificate chain
- const char * hostname
- The hostname associated with the chain
- const char * proto
- The protocol of the service connecting (e.g. tcp)
- unsigned int port
- The port of the service connecting (e.g. 443)
- unsigned int sflags
- Flags for the initialization of s (if NULL)
- unsigned int vflags
- Verification flags; an OR'ed list of dane_verify_flags_t.
- unsigned int * verify
- An OR'ed list of dane_verify_status_t.
This function will verify the given certificate chain against the CA constrains
and/or the certificate available via DANE. If no information via DANE can be
obtained the flag DANE_VERIFY_NO_DANE_INFO
is set. If a DNSSEC
signature is not available for the DANE record then the verify flag
Due to the many possible options of DANE, there is no single threat model
countered. When notifying the user about DANE verification results it may be
better to mention: DANE verification did not reject the certificate, rather
than mentioning a successful DANE verication.
Note that this function is designed to be run in addition to PKIX - certificate
chain - verification. To be run independently the
flag should be specified; then the
function will check whether the key of the peer matches the key advertized in
the DANE entry.
a negative error code on error and DANE_E_SUCCESS
(0) when the DANE
entries were successfully parsed, irrespective of whether they were verified
for that information). If no usable entries were
will be returned.
Report bugs to <email@example.com>.
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