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gnutls_certificate_verify_peers(3) gnutls gnutls_certificate_verify_peers(3) NAME gnutls_certificate_verify_peers - API function SYNOPSIS #include <gnutls/gnutls.h> int gnutls_certificate_verify_peers(gnutls_session_t session, gnutls_typed_vdata_st * data, unsigned int elements, unsigned int * status); ARGUMENTS 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 DESCRIPTION This function will verify the peer's certificate and store the the sta- tus in the status variable as a bitwise OR of gnutls_certificate_sta- tus_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 docu- mentation of gnutls_certificate_verify_peers2() for details in the ver- ification process. 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). The acceptable data types are GNUTLS_DT_DNS_HOSTNAME, GNUTLS_DT_RFC822NAME and GNUTLS_DT_KEY_PURPOSE_OID. The former two ac- cept as data a null-terminated hostname or email address, and the lat- ter a null-terminated object identifier (e.g., GNUTLS_KP_TLS_WWW_SERVER). If a DNS hostname is provided then this function will compare the host- name 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 status will have the GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE flag set. To avoid denial of service attacks some default upper limits regarding the certificate key size and chain size are set. To override them use gnutls_certificate_set_verify_limits(). 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 GNUTLS_E_INVALID_REQUEST. RETURNS GNUTLS_E_SUCCESS (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. SINCE 3.3.0 REPORTING BUGS Report bugs to <bugs@gnutls.org>. Home page: https://www.gnutls.org COPYRIGHT Copyright (C) 2001-2023 Free Software Foundation, Inc., and others. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright no- tice and this notice are preserved. SEE ALSO The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/local/share/doc/gnutls/ directory does not contain the HTML form visit https://www.gnutls.org/manual/ gnutls 3.8.9 gnutls_certificate_verify_peers(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO
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