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Third Party Openssl
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Third Party Openssl
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体验新版 GitCode,发现更多精彩内容 >>
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f0d6ee6b
编写于
2月 15, 2002
作者:
L
Lutz Jänicke
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差异文件
Even though it is not really practical people should know about it.
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e65991f9
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6
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6 changed file
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97 addition
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2 deletion
+97
-2
doc/ssl/SSL_CTX_add_extra_chain_cert.pod
doc/ssl/SSL_CTX_add_extra_chain_cert.pod
+1
-0
doc/ssl/SSL_CTX_set_client_cert_cb.pod
doc/ssl/SSL_CTX_set_client_cert_cb.pod
+90
-0
doc/ssl/SSL_CTX_use_certificate.pod
doc/ssl/SSL_CTX_use_certificate.pod
+1
-0
doc/ssl/SSL_clear.pod
doc/ssl/SSL_clear.pod
+2
-1
doc/ssl/SSL_get_client_CA_list.pod
doc/ssl/SSL_get_client_CA_list.pod
+2
-1
doc/ssl/ssl.pod
doc/ssl/ssl.pod
+1
-0
未找到文件。
doc/ssl/SSL_CTX_add_extra_chain_cert.pod
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...
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@@ -33,6 +33,7 @@ error stack to find out the reason for failure otherwise.
L<ssl(3)|ssl(3)>,
L<SSL_CTX_use_certificate(3)|SSL_CTX_use_certificate(3)>,
L<SSL_CTX_set_client_cert_cb(3)|SSL_CTX_set_client_cert_cb(3)>,
L<SSL_CTX_load_verify_locations(3)|SSL_CTX_load_verify_locations(3)>
=cut
doc/ssl/SSL_CTX_set_client_cert_cb.pod
0 → 100644
浏览文件 @
f0d6ee6b
=pod
=head1 NAME
SSL_CTX_set_client_cert_cb, SSL_CTX_get_client_cert_cb - handle client certificate callback function
=head1 SYNOPSIS
#include <openssl/ssl.h>
void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey));
int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
int (*client_cert_cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey);
=head1 DESCRIPTION
SSL_CTX_set_client_cert_cb() sets the B<client_cert_cb()> callback, that is
called when a client certificate is requested by a server.
When B<client_cert_cb()> is NULL, not callback function is used.
SSL_CTX_get_client_cert_cb() returns a pointer to the currently set callback
function.
client_cert_cb() is the application defined callback. If it wants to
set a certificate, a certificate/private key combination must be set
using the B<x509> and B<pkey> arguments and "1" must be returned. The
certificate will be installed into B<ssl>, see the NOTES and BUGS sections.
If no certificate should be set, "0" has to be returned and the default
certificate will be sent. A fatal error can be indicated by returning
a negative value, in which case the handshake will be canceled.
=head1 NOTES
During a handshake (or renegotiation) a server may request a certificate
from the client. A client certificate must only be sent, when the server
did send the request.
When no callback function is set, an OpenSSL client will send the certificate
that was set using the
L<SSL_CTX_use_certificate(3)|SSL_CTX_use_certificate(3)> family of functions.
The TLS standard requires that only a certificate is sent, if it matches
the list of acceptable CAs sent by the server. This constraint is
violated by the default behavior of the OpenSSL library. Using the
callback function it is possible to implement a proper selection routine
or to allow a user interaction to choose the certificate to be sent.
The callback function can obtain the list of acceptable CAs using the
L<SSL_get_client_CA_list(3)|SSL_get_client_CA_list(3)> function.
If a callback function is defined, the callback function will be called.
If the callback function returns a certificate, the OpenSSL library
will try to load the private key and certificate data into the SSL
object using SSL_use_certificate() and SSL_use_private_key() functions.
Thus it will permanently override the certificate and key previously
installed and will not be reset by calling L<SSL_clear(3)|SSL_clear(3)>.
If the callback returns no certificate, the OpenSSL library will send
the certificate previously installed for the SSL_CTX object or the specific
certificate of the SSL object, if available.
=head1 BUGS
The client_cert_cb() cannot return a complete certificate chain, it can
only return one client certificate. If the chain only has a length of 2,
the root CA certificate may be omitted according to the TLS standard and
thus a standard conforming answer can be sent to the server. For a
longer chain, the client must send the complete chain (with the option
to leave out the root CA certificate). This can only be accomplished by
either adding the intermediate CA certificates into the trusted
certificate store for the SSL_CTX object (resulting in having to add
CA certificates that otherwise maybe would not be trusted), or by adding
the chain certificates using the
L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>
function, which is only available for the SSL_CTX object as a whole and that
therefore probably can only apply for one client certificate, making
the concept of the callback function (to allow the choice from several
certificates) questionable.
Once the SSL object has been used in conjunction with the callback function,
the certificate will be set for the SSL object and will not be cleared
even when L<SSL_clear(3)|SSL_clear(3)> is being called. It is therefore
mandatory to destroy the SSL object using L<SSL_free(3)|SSL_free(3)>
and create a new one to return to the previous state.
=head1 SEE ALSO
L<ssl(3)|ssl(3)>, L<SSL_CTX_use_certificate(3)|SSL_CTX_use_certificate(3)>,
L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>,
L<SSL_get_client_CA_list(3)|SSL_get_client_CA_list(3)>,
L<SSL_clear(3)|SSL_clear(3)>, L<SSL_free(3)|SSL_free(3)>
=cut
doc/ssl/SSL_CTX_use_certificate.pod
浏览文件 @
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...
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@@ -149,6 +149,7 @@ L<ssl(3)|ssl(3)>, L<SSL_new(3)|SSL_new(3)>, L<SSL_clear(3)|SSL_clear(3)>,
L<SSL_CTX_load_verify_locations(3)|SSL_CTX_load_verify_locations(3)>,
L<SSL_CTX_set_default_passwd_cb(3)|SSL_CTX_set_default_passwd_cb(3)>,
L<SSL_CTX_set_cipher_list(3)|SSL_CTX_set_cipher_list(3)>,
L<SSL_CTX_set_client_cert_cb(3)|SSL_CTX_set_client_cert_cb(3)>,
L<SSL_CTX_add_extra_chain_cert(3)|SSL_CTX_add_extra_chain_cert(3)>
=cut
doc/ssl/SSL_clear.pod
浏览文件 @
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...
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@@ -44,6 +44,7 @@ The SSL_clear() operation was successful.
L<SSL_new(3)|SSL_new(3)>, L<SSL_free(3)|SSL_free(3)>,
L<SSL_shutdown(3)|SSL_shutdown(3)>, L<SSL_set_shutdown(3)|SSL_set_shutdown(3)>,
L<SSL_CTX_set_options(3)|SSL_CTX_set_options(3)>, L<ssl(3)|ssl(3)>
L<SSL_CTX_set_options(3)|SSL_CTX_set_options(3)>, L<ssl(3)|ssl(3)>,
L<SSL_CTX_set_client_cert_cb(3)|SSL_CTX_set_client_cert_cb(3)>
=cut
doc/ssl/SSL_get_client_CA_list.pod
浏览文件 @
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...
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@@ -47,6 +47,7 @@ the server did not send a list of CAs (client mode).
=head1 SEE ALSO
L<ssl(3)|ssl(3)>,
L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>
L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>,
L<SSL_CTX_set_client_cert_cb(3)|SSL_CTX_set_client_cert_cb(3)>
=cut
doc/ssl/ssl.pod
浏览文件 @
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...
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@@ -675,6 +675,7 @@ L<SSL_CTX_set_cert_store(3)|SSL_CTX_set_cert_store(3)>,
L<SSL_CTX_set_cert_verify_callback(3)|SSL_CTX_set_cert_verify_callback(3)>,
L<SSL_CTX_set_cipher_list(3)|SSL_CTX_set_cipher_list(3)>,
L<SSL_CTX_set_client_CA_list(3)|SSL_CTX_set_client_CA_list(3)>,
L<SSL_CTX_set_client_cert_cb(3)|SSL_CTX_set_client_cert_cb(3)>,
L<SSL_CTX_set_default_passwd_cb(3)|SSL_CTX_set_default_passwd_cb(3)>,
L<SSL_CTX_set_generate_session_id(3)|SSL_CTX_set_generate_session_id(3)>,
L<SSL_CTX_set_info_callback(3)|SSL_CTX_set_info_callback(3)>,
...
...
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