5 X509_STORE_CTX_new_ex, X509_STORE_CTX_new, X509_STORE_CTX_cleanup,
6 X509_STORE_CTX_free, X509_STORE_CTX_init, X509_STORE_CTX_set0_trusted_stack,
7 X509_STORE_CTX_set_cert, X509_STORE_CTX_set0_crls,
8 X509_STORE_CTX_get0_chain, X509_STORE_CTX_set0_verified_chain,
9 X509_STORE_CTX_get0_param, X509_STORE_CTX_set0_param,
10 X509_STORE_CTX_get0_untrusted, X509_STORE_CTX_set0_untrusted,
11 X509_STORE_CTX_get_num_untrusted,
12 X509_STORE_CTX_set_default,
13 X509_STORE_CTX_set_verify,
14 X509_STORE_CTX_verify_fn
15 - X509_STORE_CTX initialisation
19 #include <openssl/x509_vfy.h>
21 X509_STORE_CTX *X509_STORE_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq);
22 X509_STORE_CTX *X509_STORE_CTX_new(void);
23 void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
24 void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
26 int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
27 X509 *x509, STACK_OF(X509) *chain);
29 void X509_STORE_CTX_set0_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
31 void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx, X509 *x);
32 STACK_OF(X509) *X509_STORE_CTX_get0_chain(const X509_STORE_CTX *ctx);
33 void X509_STORE_CTX_set0_verified_chain(X509_STORE_CTX *ctx, STACK_OF(X509) *chain);
34 void X509_STORE_CTX_set0_crls(X509_STORE_CTX *ctx, STACK_OF(X509_CRL) *sk);
36 X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(const X509_STORE_CTX *ctx);
37 void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param);
38 int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name);
40 STACK_OF(X509)* X509_STORE_CTX_get0_untrusted(const X509_STORE_CTX *ctx);
41 void X509_STORE_CTX_set0_untrusted(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
43 int X509_STORE_CTX_get_num_untrusted(const X509_STORE_CTX *ctx);
45 typedef int (*X509_STORE_CTX_verify_fn)(X509_STORE_CTX *);
46 void X509_STORE_CTX_set_verify(X509_STORE_CTX *ctx, X509_STORE_CTX_verify_fn verify);
50 These functions initialise an B<X509_STORE_CTX> structure for subsequent use
51 by X509_verify_cert().
53 X509_STORE_CTX_new_ex() returns a newly initialised B<X509_STORE_CTX>
54 structure associated with the specified library context I<libctx> and property
55 query string I<propq>. Any cryptographic algorithms fetched while performing
56 processing with the X509_STORE_CTX will use that library context and property
59 X509_STORE_CTX_new() is the same as X509_STORE_CTX_new_ex() except that
60 the default library context and a NULL property query string are used.
62 X509_STORE_CTX_cleanup() internally cleans up an B<X509_STORE_CTX> structure.
63 The context can then be reused with a new call to X509_STORE_CTX_init().
65 X509_STORE_CTX_free() completely frees up I<ctx>. After this call I<ctx>
67 If I<ctx> is NULL nothing is done.
69 X509_STORE_CTX_init() sets up I<ctx> for a subsequent verification operation.
70 It must be called before each call to X509_verify_cert(), i.e. a I<ctx> is only
71 good for one call to X509_verify_cert(); if you want to verify a second
72 certificate with the same I<ctx> then you must call X509_STORE_CTX_cleanup()
73 and then X509_STORE_CTX_init() again before the second call to
74 X509_verify_cert(). The trusted certificate store is set to I<store>, the end
75 entity certificate to be verified is set to I<x509> and a set of additional
76 certificates (which will be untrusted but may be used to build the chain) in
77 I<chain>. Any or all of the I<store>, I<x509> and I<chain> parameters can be
80 X509_STORE_CTX_set0_trusted_stack() sets the set of trusted certificates of
81 I<ctx> to I<sk>. This is an alternative way of specifying trusted certificates
82 instead of using an B<X509_STORE>.
84 X509_STORE_CTX_set_cert() sets the certificate to be verified in I<ctx> to
87 X509_STORE_CTX_set0_verified_chain() sets the validated chain used
88 by I<ctx> to be I<chain>.
89 Ownership of the chain is transferred to I<ctx> and should not be
91 X509_STORE_CTX_get0_chain() returns the internal pointer used by the
92 I<ctx> that contains the validated chain.
94 X509_STORE_CTX_set0_crls() sets a set of CRLs to use to aid certificate
95 verification to I<sk>. These CRLs will only be used if CRL verification is
96 enabled in the associated B<X509_VERIFY_PARAM> structure. This might be
97 used where additional "useful" CRLs are supplied as part of a protocol,
98 for example in a PKCS#7 structure.
100 X509_STORE_CTX_get0_param() retrieves an internal pointer
101 to the verification parameters associated with I<ctx>.
103 X509_STORE_CTX_get0_untrusted() retrieves an internal pointer to the
104 stack of untrusted certificates associated with I<ctx>.
106 X509_STORE_CTX_set0_untrusted() sets the internal point to the stack
107 of untrusted certificates associated with I<ctx> to I<sk>.
109 X509_STORE_CTX_set0_param() sets the internal verification parameter pointer
110 to I<param>. After this call B<param> should not be used.
112 X509_STORE_CTX_set_default() looks up and sets the default verification
113 method to I<name>. This uses the function X509_VERIFY_PARAM_lookup() to
114 find an appropriate set of parameters from I<name>.
116 X509_STORE_CTX_get_num_untrusted() returns the number of untrusted certificates
117 that were used in building the chain following a call to X509_verify_cert().
119 X509_STORE_CTX_set_verify() provides the capability for overriding the default
120 verify function. This function is responsible for verifying chain signatures and
123 A verify function is defined as an X509_STORE_CTX_verify type which has the
126 int (*verify)(X509_STORE_CTX *);
128 This function should receive the current X509_STORE_CTX as a parameter and
129 return 1 on success or 0 on failure.
133 The certificates and CRLs in a store are used internally and should B<not>
134 be freed up until after the associated B<X509_STORE_CTX> is freed.
138 The certificates and CRLs in a context are used internally and should B<not>
139 be freed up until after the associated B<X509_STORE_CTX> is freed. Copies
140 should be made or reference counts increased instead.
144 X509_STORE_CTX_new() returns a newly allocates context or B<NULL> is an
147 X509_STORE_CTX_init() returns 1 for success or 0 if an error occurred.
149 X509_STORE_CTX_get0_param() returns a pointer to an B<X509_VERIFY_PARAM>
150 structure or B<NULL> if an error occurred.
152 X509_STORE_CTX_cleanup(), X509_STORE_CTX_free(),
153 X509_STORE_CTX_set0_trusted_stack(),
154 X509_STORE_CTX_set_cert(),
155 X509_STORE_CTX_set0_crls() and X509_STORE_CTX_set0_param() do not return
158 X509_STORE_CTX_set_default() returns 1 for success or 0 if an error occurred.
160 X509_STORE_CTX_get_num_untrusted() returns the number of untrusted certificates
165 L<X509_verify_cert(3)>
166 L<X509_VERIFY_PARAM_set_flags(3)>
170 The X509_STORE_CTX_set0_crls() function was added in OpenSSL 1.0.0.
171 The X509_STORE_CTX_get_num_untrusted() function was added in OpenSSL 1.1.0.
172 The X509_STORE_CTX_new_ex() function was added in OpenSSL 3.0.
176 Copyright 2009-2020 The OpenSSL Project Authors. All Rights Reserved.
178 Licensed under the Apache License 2.0 (the "License"). You may not use
179 this file except in compliance with the License. You can obtain a copy
180 in the file LICENSE in the source distribution or at
181 L<https://www.openssl.org/source/license.html>.