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133 .\" ========================================================================
134 .\"
135 .IX Title "X509_STORE_CTX_new 3"
136 .TH X509_STORE_CTX_new 3 "2016-05-03" "1.0.1t" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
138 .\" way too many mistakes in technical documents.
139 .if n .ad l
140 .nh
141 .SH "NAME"
142 X509_STORE_CTX_new, X509_STORE_CTX_cleanup, X509_STORE_CTX_free, X509_STORE_CTX_init, X509_STORE_CTX_trusted_stack, X509_STORE_CTX_set_cert, X509_STORE_CTX_set_chain, X509_STORE_CTX_set0_crls, X509_STORE_CTX_get0_param, X509_STORE_CTX_set0_param, X509_STORE_CTX_set_default \- X509_STORE_CTX initialisation
143 .SH "SYNOPSIS"
144 .IX Header "SYNOPSIS"
145 .Vb 1
146 \& #include <openssl/x509_vfy.h>
147 \&
148 \& X509_STORE_CTX *X509_STORE_CTX_new(void);
149 \& void X509_STORE_CTX_cleanup(X509_STORE_CTX *ctx);
150 \& void X509_STORE_CTX_free(X509_STORE_CTX *ctx);
151 \&
152 \& int X509_STORE_CTX_init(X509_STORE_CTX *ctx, X509_STORE *store,
153 \& X509 *x509, STACK_OF(X509) *chain);
154 \&
155 \& void X509_STORE_CTX_trusted_stack(X509_STORE_CTX *ctx, STACK_OF(X509) *sk);
156 \&
157 \& void X509_STORE_CTX_set_cert(X509_STORE_CTX *ctx,X509 *x);
158 \& void X509_STORE_CTX_set_chain(X509_STORE_CTX *ctx,STACK_OF(X509) *sk);
159 \& void X509_STORE_CTX_set0_crls(X509_STORE_CTX *ctx, STACK_OF(X509_CRL) *sk);
160 \&
161 \& X509_VERIFY_PARAM *X509_STORE_CTX_get0_param(X509_STORE_CTX *ctx);
162 \& void X509_STORE_CTX_set0_param(X509_STORE_CTX *ctx, X509_VERIFY_PARAM *param);
163 \& int X509_STORE_CTX_set_default(X509_STORE_CTX *ctx, const char *name);
164 .Ve
165 .SH "DESCRIPTION"
166 .IX Header "DESCRIPTION"
167 These functions initialise an \fBX509_STORE_CTX\fR structure for subsequent use
168 by \fIX509_verify_cert()\fR.
169 .PP
170 \&\fIX509_STORE_CTX_new()\fR returns a newly initialised \fBX509_STORE_CTX\fR structure.
171 .PP
172 \&\fIX509_STORE_CTX_cleanup()\fR internally cleans up an \fBX509_STORE_CTX\fR structure.
173 The context can then be reused with an new call to \fIX509_STORE_CTX_init()\fR.
174 .PP
175 \&\fIX509_STORE_CTX_free()\fR completely frees up \fBctx\fR. After this call \fBctx\fR
176 is no longer valid.
177 .PP
178 \&\fIX509_STORE_CTX_init()\fR sets up \fBctx\fR for a subsequent verification operation.
179 It must be called before each call to \fIX509_verify_cert()\fR, i.e. a \fBctx\fR is only
180 good for one call to \fIX509_verify_cert()\fR; if you want to verify a second
181 certificate with the same \fBctx\fR then you must call \fIX509_XTORE_CTX_cleanup()\fR
182 and then \fIX509_STORE_CTX_init()\fR again before the second call to
183 \&\fIX509_verify_cert()\fR. The trusted certificate store is set to \fBstore\fR, the end
184 entity certificate to be verified is set to \fBx509\fR and a set of additional
185 certificates (which will be untrusted but may be used to build the chain) in
186 \&\fBchain\fR. Any or all of the \fBstore\fR, \fBx509\fR and \fBchain\fR parameters can be
187 \&\fB\s-1NULL\s0\fR.
188 .PP
189 \&\fIX509_STORE_CTX_trusted_stack()\fR sets the set of trusted certificates of \fBctx\fR
190 to \fBsk\fR. This is an alternative way of specifying trusted certificates
191 instead of using an \fBX509_STORE\fR.
192 .PP
193 \&\fIX509_STORE_CTX_set_cert()\fR sets the certificate to be vertified in \fBctx\fR to
194 \&\fBx\fR.
195 .PP
196 \&\fIX509_STORE_CTX_set_chain()\fR sets the additional certificate chain used by \fBctx\fR
197 to \fBsk\fR.
198 .PP
199 \&\fIX509_STORE_CTX_set0_crls()\fR sets a set of CRLs to use to aid certificate
200 verification to \fBsk\fR. These CRLs will only be used if \s-1CRL\s0 verification is
201 enabled in the associated \fBX509_VERIFY_PARAM\fR structure. This might be
202 used where additional \*(L"useful\*(R" CRLs are supplied as part of a protocol,
203 for example in a PKCS#7 structure.
204 .PP
205 X509_VERIFY_PARAM *\fIX509_STORE_CTX_get0_param()\fR retrieves an intenal pointer
206 to the verification parameters associated with \fBctx\fR.
207 .PP
208 \&\fIX509_STORE_CTX_set0_param()\fR sets the intenal verification parameter pointer
209 to \fBparam\fR. After this call \fBparam\fR should not be used.
210 .PP
211 \&\fIX509_STORE_CTX_set_default()\fR looks up and sets the default verification
212 method to \fBname\fR. This uses the function \fIX509_VERIFY_PARAM_lookup()\fR to
213 find an appropriate set of parameters from \fBname\fR.
214 .SH "NOTES"
215 .IX Header "NOTES"
216 The certificates and CRLs in a store are used internally and should \fBnot\fR
217 be freed up until after the associated \fBX509_STORE_CTX\fR is freed. Legacy
218 applications might implicitly use an \fBX509_STORE_CTX\fR like this:
219 .PP
220 .Vb 2
221 \& X509_STORE_CTX ctx;
222 \& X509_STORE_CTX_init(&ctx, store, cert, chain);
223 .Ve
224 .PP
225 this is \fBnot\fR recommended in new applications they should instead do:
226 .PP
227 .Vb 5
228 \& X509_STORE_CTX *ctx;
229 \& ctx = X509_STORE_CTX_new();
230 \& if (ctx == NULL)
231 \& /* Bad error */
232 \& X509_STORE_CTX_init(ctx, store, cert, chain);
233 .Ve
234 .SH "BUGS"
235 .IX Header "BUGS"
236 The certificates and CRLs in a context are used internally and should \fBnot\fR
237 be freed up until after the associated \fBX509_STORE_CTX\fR is freed. Copies
238 should be made or reference counts increased instead.
239 .SH "RETURN VALUES"
240 .IX Header "RETURN VALUES"
241 \&\fIX509_STORE_CTX_new()\fR returns an newly allocates context or \fB\s-1NULL\s0\fR is an
242 error occurred.
243 .PP
244 \&\fIX509_STORE_CTX_init()\fR returns 1 for success or 0 if an error occurred.
245 .PP
246 \&\fIX509_STORE_CTX_get0_param()\fR returns a pointer to an \fBX509_VERIFY_PARAM\fR
247 structure or \fB\s-1NULL\s0\fR if an error occurred.
248 .PP
249 \&\fIX509_STORE_CTX_cleanup()\fR, \fIX509_STORE_CTX_free()\fR, \fIX509_STORE_CTX_trusted_stack()\fR,
250 \&\fIX509_STORE_CTX_set_cert()\fR, \fIX509_STORE_CTX_set_chain()\fR,
251 \&\fIX509_STORE_CTX_set0_crls()\fR and \fIX509_STORE_CTX_set0_param()\fR do not return
252 values.
253 .PP
254 \&\fIX509_STORE_CTX_set_default()\fR returns 1 for success or 0 if an error occurred.
255 .SH "SEE ALSO"
256 .IX Header "SEE ALSO"
257 \&\fIX509_verify_cert\fR\|(3)
258 \&\fIX509_VERIFY_PARAM_set_flags\fR\|(3)
259 .SH "HISTORY"
260 .IX Header "HISTORY"
261 \&\fIX509_STORE_CTX_set0_crls()\fR was first added to OpenSSL 1.0.0