gnutls_certificate_verify_peers






gnutls_certificate_verify_peers − API function

#include<gnutls/gnutls.h>

, gnutls_typed_vdata_st * int
gnutls_certificate_verify_peers(gnutls_session_t session



gnutls_session_t session
            is a gnutls session

gnutls_typed_vdata_st * data
            an array of typed data

unsigned int elements
            the number of data elements

unsigned int * status
            is the output of the verification

This function will verify the peer’s certificate and store
the status in the  status variable as a bitwise or’d
gnutls_certificate_status_t values or zero if the
certificate is trusted. Note that value in  status is set
only when the return value of this function is success (i.e,
failure to trust a certificate does not imply a negative
return value).  The default verification flags used by this
function can be overridden using
gnutls_certificate_set_verify_flags(). See the documentation
of gnutls_certificate_verify_peers2() for details in the
verification process.

The acceptable  data types are GNUTLS_DT_DNS_HOSTNAME,
GNUTLS_DT_RFC822NAME and GNUTLS_DT_KEY_PURPOSE_OID.  The
former two accept as data a null−terminated hostname or
email address, and the latter a null−terminated object
identifier (e.g., GNUTLS_KP_TLS_WWW_SERVER).  If a DNS
hostname is provided then this function will compare the
hostname in the certificate against the given. If names do
not match the GNUTLS_CERT_UNEXPECTED_OWNER status flag will
be set.  If a key purpose OID is provided and the
end−certificate contains the extended key usage PKIX
extension, it will be required to be have the provided key
purpose or be marked for any purpose, otherwise verification
will fail with GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE
status.

a negative error code on error and GNUTLS_E_SUCCESS (0) when
the peer’s certificate was successfully parsed, whether or
not it was verified.












                             ‐2‐


3.3.0

Report bugs to <bugs@gnutls.org>.
Home page: http://www.gnutls.org


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