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Clarify request of client certificates. This is a FAQ.

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Lutz Jänicke 2001-04-17 13:18:56 +00:00
parent 4f19a0672b
commit 197322455d
2 changed files with 16 additions and 1 deletions
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8
FAQ
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@ -47,6 +47,7 @@ OpenSSL - Frequently Asked Questions
* Why do I get errors about unknown algorithms?
* Why can't the OpenSSH configure script detect OpenSSL?
* Can I use OpenSSL's SSL library with non-blocking I/O?
* Why doesn't my server application receive a client certificate?
===============================================================================
@ -519,5 +520,12 @@ requiring a bi-directional message exchange; both SSL_read() and
SSL_write() will try to continue any pending handshake.
* Why doesn't my server application receive a client certificate?
Due to the TLS protocol definition, a client will only send a certificate,
if explicitely asked by the server. Use the SSL_VERIFY_PEER flag of the
SSL_CTX_set_verify() function to enable the use of client certificates.
===============================================================================

9
doc/ssl/SSL_get_peer_certificate.pod
View File

@ -17,6 +17,12 @@ peer presented. If the peer did not present a certificate, NULL is returned.
=head1 NOTES
Due to the protocol definition, a TLS/SSL server will always send a
certificate, if present. A client will only send a certificate when
explicitely requested to do so by the server (see
L<SSL_CTX_set_verify(3)|SSL_CTX_set_verify(3)>). If an anonymous cipher
is used, no certificates are sent.
That a certificate is returned does not indicate information about the
verification state, use L<SSL_get_verify_result(3)|SSL_get_verify_result(3)>
to check the verification state.
@ -43,6 +49,7 @@ The return value points to the certificate presented by the peer.
=head1 SEE ALSO
L<ssl(3)|ssl(3)>, L<SSL_get_verify_result(3)|SSL_get_verify_result(3)>
L<ssl(3)|ssl(3)>, L<SSL_get_verify_result(3)|SSL_get_verify_result(3)>,
L<SSL_CTX_set_verify(3)|SSL_CTX_set_verify(3)>
=cut