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体验新版 GitCode,发现更多精彩内容 >>
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6c17629f
编写于
10月 17, 2009
作者:
D
Dr. Stephen Henson
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差异文件
Preliminary documentation for X509_VERIFY_PARAM.
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db576632
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-1
doc/crypto/X509_STORE_CTX_get_error.pod
doc/crypto/X509_STORE_CTX_get_error.pod
+1
-1
doc/crypto/X509_VERIFY_PARAM_set_flags.pod
doc/crypto/X509_VERIFY_PARAM_set_flags.pod
+171
-0
未找到文件。
doc/crypto/X509_STORE_CTX_get_error.pod
浏览文件 @
6c17629f
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@@ -61,7 +61,7 @@ as "unused".
=over 4
=item B<
0
X509_V_OK: ok>
=item B<X509_V_OK: ok>
the operation was successful.
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doc/crypto/X509_VERIFY_PARAM_set_flags.pod
0 → 100644
浏览文件 @
6c17629f
=pod
=head1 NAME
X509_VERIFY_PARAM_set_flags, X509_VERIFY_PARAM_clear_flags, X509_VERIFY_PARAM_get_flags, X509_VERIFY_PARAM_set_purpose, X509_VERIFY_PARAM_set_trust, X509_VERIFY_PARAM_set_depth, X509_VERIFY_PARAM_get_depth, X509_VERIFY_PARAM_set_time, X509_VERIFY_PARAM_add0_policy, X509_VERIFY_PARAM_set1_policies - X509 verification parameters
=head1 SYNOPSIS
#include <openssl/x509_vfy.h>
int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags);
int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param,
unsigned long flags);
unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param);
int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose);
int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust);
void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t);
int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param,
ASN1_OBJECT *policy);
int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param,
STACK_OF(ASN1_OBJECT) *policies);
void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth);
int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param);
=head1 DESCRIPTION
These functions manipulate the B<X509_VERIFY_PARAM> structure associated with
a certificate verification operation.
The X509_VERIFY_PARAM_set_flags() function sets the flags in B<param> by oring
it with B<flags>. See the B<VERIFICATION FLAGS> section for a complete
description of values the B<flags> parameter can take.
X509_VERIFY_PARAM_get_flags() returns the flags in B<param>.
X509_VERIFY_PARAM_clear_flags() clears the flags B<flags> in B<param>.
X509_VERIFY_PARAM_set_purpose() sets the verification purpose in B<param>
to B<purpose>. This determines the acceptable purpose of the certificate
chain, for example SSL client or SSL server.
X509_VERIFY_PARAM_set_trust() sets the trust setting in B<param> to
B<trust>.
X509_VERIFY_PARAM_set_time() sets the verification time in B<param> to
B<t>. Normally the current time is used.
X509_VERIFY_PARAM_add0_policy() enables policy checking (it is disabled
by default) and adds B<policy> to the acceptable policy set.
X509_VERIFY_PARAM_set1_policies() enables policy checking (it is disabled
by default) and sets the acceptable policy set to B<policies>. Any existing
policy set is cleared. The B<policies> parameter can be B<NULL> to clear
an existing policy set.
X509_VERIFY_PARAM_set_depth() sets the maximum verification depth to B<depth>.
That is the maximum number of untrusted CA certificates that can appear in a
chain.
=head1 RETURN VALUES
X509_VERIFY_PARAM_set_flags(), X509_VERIFY_PARAM_clear_flags(),
X509_VERIFY_PARAM_set_purpose(), X509_VERIFY_PARAM_set_trust(),
X509_VERIFY_PARAM_add0_policy() and X509_VERIFY_PARAM_set1_policies() return 1
for success and 0 for failure.
X509_VERIFY_PARAM_get_flags() returns the current verification flags.
X509_VERIFY_PARAM_set_time() and X509_VERIFY_PARAM_set_depth() do not return
values.
X509_VERIFY_PARAM_get_depth() returns the current verification depth.
=head1 VERIFICATION FLAGS
The verification flags consists of zero or more of the following flags
ored together.
B<X509_V_FLAG_CRL_CHECK> enables CRL checking for the certificate chain leaf
certificate. An error occurs if a suitable CRL cannot be found.
B<X509_V_FLAG_CRL_CHECK_ALL> enables CRL checking for the entire certificate
chain.
B<X509_V_FLAG_IGNORE_CRITICAL> disabled critical extension checking. By default
any unhandled critical extensions in certificates or (if checked) CRLs results
in a fatal error. If this flag is set unhandled critical extensions are
ignored. B<WARNING> setting this option for anything other than debugging
purposes can be a security risk. Finer control over which extensions are
supported can be performed in the verification callback.
THe B<X509_V_FLAG_X509_STRICT> flag disables workarounds for some broken
certificates and makes the verification strictly apply B<X509> rules.
B<X509_V_FLAG_ALLOW_PROXY_CERTS> enables proxy certificate verification.
B<X509_V_FLAG_POLICY_CHECK> enables certificate policy checking, by default
no policy checking is peformed. Additional information is sent to the
verification callback relating to policy checking.
B<X509_V_FLAG_EXPLICIT_POLICY>, B<X509_V_FLAG_INHIBIT_ANY> and
B<X509_V_FLAG_INHIBIT_MAP> set the B<require explicit policy>, B<inhibit any
policy> and B<inhibit policy mapping> flags respectively as defined in
B<RFC3280>. Policy checking is automatically enabled if any of these flags
are set.
If B<X509_V_FLAG_NOTIFY_POLICY> is set and the policy checking is successful
a special status code is set to the verification callback. This permits it
to examine the valid policy tree and perform additional checks or simply
log it for debugging purposes.
By default some addtional features such as indirect CRLs and CRLs signed by
different keys are disabled. If B<X509_V_FLAG_EXTENDED_CRL_SUPPORT> is set
they are enabled.
If B<X509_V_FLAG_USE_DELTAS> ise set delta CRLs (if present) are used to
determine certificate status. If not set deltas are ignored.
B<X509_V_FLAG_CHECK_SS_SIGNATURE> enables checking of the root CA self signed
cerificate signature. By default this check is disabled because it doesn't
add any additional security but in some cases applications might want to
check the signature anyway. A side effect of not checking the root CA
signature is that disabled or unsupported message digests on the root CA
are not treated as fatal errors.
The B<X509_V_FLAG_CB_ISSUER_CHECK> flag enables debugging of certificate
issuer checks. It is B<not> needed unless you are logging certificate
verification. If this flag is set then additional status codes will be sent
to the verification callback and it B<must> be prepared to handle such cases
without assuming they are hard errors.
=head1 NOTES
The above functions should be used to manipulate verification parameters
instead of legacy functions which work in specific structures such as
X509_STORE_CTX_set_flags().
=head1 BUGS
Delta CRL checking is currently primitive. Only a single delta can be used and
(partly due to limitations of B<X509_STORE>) constructed CRLs are not
maintained.
If CRLs checking is enable CRLs are expected to be available in the
corresponding B<X509_STORE> structure. No attempt is made to download
CRLs from the CRL distribution points extension.
=head1 EXAMPLE
Enable CRL checking when performing certificate verification of an B<SSL_CTX>
structure:
X509_VERIFY_PARAM *param;
param = X509_VERIFY_PARAM_new();
X509_VERIFY_PARAM_set_flags(param, X509_V_FLAG_CRL_CHECK);
SSL_CTX_set1_param(ctx, param);
X509_VERIFY_PARAM_free(param);
=head1 SEE ALSO
L<X509_verify_cert(3)|X509_verify_cert(3)>
=head1 HISTORY
TBA
=cut
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