Updated: 2022/Sep/29

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SSL_get_verify_result(3)            OpenSSL           SSL_get_verify_result(3)



NAME
       SSL_get_verify_result - get result of peer certificate verification

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/ssl.h>

        long SSL_get_verify_result(const SSL *ssl);

DESCRIPTION
       SSL_get_verify_result() returns the result of the verification of the
       X509 certificate presented by the peer, if any.

NOTES
       SSL_get_verify_result() can only return one error code while the
       verification of a certificate can fail because of many reasons at the
       same time. Only the last verification error that occurred during the
       processing is available from SSL_get_verify_result().

       Sometimes there can be a sequence of errors leading to the verification
       failure as reported by SSL_get_verify_result().  To get the errors, it
       is necessary to setup a verify callback via SSL_CTX_set_verify(3) or
       SSL_set_verify(3) and retrieve the errors from the error stack there,
       because once SSL_connect(3) returns, these errors may no longer be
       available.

       The verification result is part of the established session and is
       restored when a session is reused.

BUGS
       If no peer certificate was presented, the returned result code is
       X509_V_OK. This is because no verification error occurred, it does
       however not indicate success. SSL_get_verify_result() is only useful in
       connection with SSL_get_peer_certificate(3).

RETURN VALUES
       The following return values can currently occur:

       X509_V_OK
           The verification succeeded or no peer certificate was presented.

       Any other value
           Documented in openssl-verify(1).

SEE ALSO
       ssl(7), SSL_set_verify_result(3), SSL_get_peer_certificate(3),
       openssl-verify(1)

COPYRIGHT
       Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.



3.0.12                            2023-10-25          SSL_get_verify_result(3)