gnutls_certificate_verify_peers3 - API function
int gnutls_certificate_verify_peers3(gnutls_session_t session,
const char * hostname, unsigned int * status);
- gnutls_session_t session
- is a gnutls session
- const char * hostname
- is the expected name of the peer; may be NULL
- unsigned int * status
- is the output of the verification
This function will verify the peer's certificate and store the the status in the
variable as a bitwise OR of gnutls_certificate_status_t values
or zero if the certificate is trusted. Note that value in status
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
. See the documentation of
for details in the verification
This function will take into account the stapled OCSP responses sent by the
server, as well as the following X.509 certificate extensions: Name
Constraints, Key Usage, and Basic Constraints (pathlen).
If the hostname
provided is non-NULL then this function will compare the
hostname in the certificate against it. The comparison will follow the RFC6125
recommendations. If names do not match the GNUTLS_CERT_UNEXPECTED_OWNER
status flag will be set.
In order to verify the purpose of the end-certificate (by checking the extended
key usage), use gnutls_certificate_verify_peers()
To avoid denial of service attacks some default upper limits regarding the
certificate key size and chain size are set. To override them use
Note that when using raw public-keys verification will not work because there is
no corresponding certificate body belonging to the raw key that can be
verified. In that case this function will return
(0) when the validation is performed, or a negative
error code otherwise. A successful error code means that the status
parameter must be checked to obtain the validation status.
Report bugs to <email@example.com>.
Home page: https://www.gnutls.org
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