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Title "SSL_GET_VERIFY_RESULT 3ossl" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
SSL_get_verify_result - get result of peer certificate verification Header "SYNOPSIS" .Vb 1 #include <openssl/ssl.h> \& long SSL_get_verify_result(const SSL *ssl); .Ve Header "DESCRIPTION" \fBSSL_get_verify_result() returns the result of the verification of the X509 certificate presented by the peer, if any. Header "NOTES" \fBSSL_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 \fBSSL_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.

Header "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). Header "RETURN VALUES" The following return values can currently occur: Item "X509_V_OK" The verification succeeded or no peer certificate was presented. Item "Any other value" Documented in openssl-verify\|(1). Header "SEE ALSO" \fBssl\|(7), SSL_set_verify_result\|(3), \fBSSL_get_peer_certificate\|(3), \fBopenssl-verify\|(1) Header "COPYRIGHT" Copyright 2000-2023 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.