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.\"
.IX Title "OCSP_RESPONSE_STATUS 3ossl"
.TH OCSP_RESPONSE_STATUS 3ossl "2026-01-16" "3.5.1" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
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.nh
.SH "NAME"
OCSP_response_status, OCSP_response_get1_basic, OCSP_response_create,
OCSP_RESPONSE_free, OCSP_RESPID_set_by_name,
OCSP_RESPID_set_by_key_ex, OCSP_RESPID_set_by_key, OCSP_RESPID_match_ex,
OCSP_RESPID_match, OCSP_basic_sign, OCSP_basic_sign_ctx
\&\- OCSP response functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ocsp.h>
\&
\& int OCSP_response_status(OCSP_RESPONSE *resp);
\& OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp);
\& OCSP_RESPONSE *OCSP_response_create(int status, OCSP_BASICRESP *bs);
\& void OCSP_RESPONSE_free(OCSP_RESPONSE *resp);
\&
\& int OCSP_RESPID_set_by_name(OCSP_RESPID *respid, X509 *cert);
\& int OCSP_RESPID_set_by_key_ex(OCSP_RESPID *respid, X509 *cert,
\&                               OSSL_LIB_CTX *libctx, const char *propq);
\& int OCSP_RESPID_set_by_key(OCSP_RESPID *respid, X509 *cert);
\& int OCSP_RESPID_match_ex(OCSP_RESPID *respid, X509 *cert, OSSL_LIB_CTX *libctx,
\&                          const char *propq);
\& int OCSP_RESPID_match(OCSP_RESPID *respid, X509 *cert);
\&
\& int OCSP_basic_sign(OCSP_BASICRESP *brsp, X509 *signer, EVP_PKEY *key,
\&                     const EVP_MD *dgst, STACK_OF(X509) *certs,
\&                     unsigned long flags);
\& int OCSP_basic_sign_ctx(OCSP_BASICRESP *brsp, X509 *signer, EVP_MD_CTX *ctx,
\&                         STACK_OF(X509) *certs, unsigned long flags);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBOCSP_response_status()\fR returns the \s-1OCSP\s0 response status of \fIresp\fR. It returns
one of the values: \fI\s-1OCSP_RESPONSE_STATUS_SUCCESSFUL\s0\fR,
\&\fI\s-1OCSP_RESPONSE_STATUS_MALFORMEDREQUEST\s0\fR,
\&\fI\s-1OCSP_RESPONSE_STATUS_INTERNALERROR\s0\fR, \fI\s-1OCSP_RESPONSE_STATUS_TRYLATER\s0\fR
\&\fI\s-1OCSP_RESPONSE_STATUS_SIGREQUIRED\s0\fR, or \fI\s-1OCSP_RESPONSE_STATUS_UNAUTHORIZED\s0\fR.
.PP
\&\fBOCSP_response_get1_basic()\fR decodes and returns the \fI\s-1OCSP_BASICRESP\s0\fR structure
contained in \fIresp\fR.
.PP
\&\fBOCSP_response_create()\fR creates and returns an \fI\s-1OCSP_RESPONSE\s0\fR structure for
\&\fIstatus\fR and optionally including basic response \fIbs\fR.
.PP
\&\fBOCSP_RESPONSE_free()\fR frees up \s-1OCSP\s0 response \fIresp\fR.
If the argument is \s-1NULL,\s0 nothing is done.
.PP
\&\fBOCSP_RESPID_set_by_name()\fR sets the name of the \s-1OCSP_RESPID\s0 to be the same as the
subject name in the supplied X509 certificate \fIcert\fR for the \s-1OCSP\s0 responder.
.PP
\&\fBOCSP_RESPID_set_by_key_ex()\fR sets the key of the \s-1OCSP_RESPID\s0 to be the same as the
key in the supplied X509 certificate \fIcert\fR for the \s-1OCSP\s0 responder. The key is
stored as a \s-1SHA1\s0 hash. To calculate the hash the \s-1SHA1\s0 algorithm is fetched using
the library ctx \fIlibctx\fR and the property query string \fIpropq\fR (see
\&\*(L"\s-1ALGORITHM FETCHING\*(R"\s0 in \fBcrypto\fR\|(7) for further information).
.PP
\&\fBOCSP_RESPID_set_by_key()\fR does the same as \fBOCSP_RESPID_set_by_key_ex()\fR except
that the default library context is used with an empty property query string.
.PP
Note that an \s-1OCSP_RESPID\s0 can only have one of the name, or the key set. Calling
\&\fBOCSP_RESPID_set_by_name()\fR or \fBOCSP_RESPID_set_by_key()\fR will clear any existing
setting.
.PP
\&\fBOCSP_RESPID_match_ex()\fR tests whether the \s-1OCSP_RESPID\s0 given in \fIrespid\fR matches
with the X509 certificate \fIcert\fR based on the \s-1SHA1\s0 hash. To calculate the hash
the \s-1SHA1\s0 algorithm is fetched using the library ctx \fIlibctx\fR and the property
query string \fIpropq\fR (see \*(L"\s-1ALGORITHM FETCHING\*(R"\s0 in \fBcrypto\fR\|(7) for further
information).
.PP
\&\fBOCSP_RESPID_match()\fR does the same as \fBOCSP_RESPID_match_ex()\fR except that the
default library context is used with an empty property query string.
.PP
\&\fBOCSP_basic_sign()\fR signs \s-1OCSP\s0 response \fIbrsp\fR using certificate \fIsigner\fR, private key
\&\fIkey\fR, digest \fIdgst\fR and additional certificates \fIcerts\fR. If the \fIflags\fR option
\&\fI\s-1OCSP_NOCERTS\s0\fR is set then no certificates will be included in the response. If the
\&\fIflags\fR option \fI\s-1OCSP_RESPID_KEY\s0\fR is set then the responder is identified by key \s-1ID\s0
rather than by name. \fBOCSP_basic_sign_ctx()\fR also signs \s-1OCSP\s0 response \fIbrsp\fR but
uses the parameters contained in digest context \fIctx\fR.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBOCSP_RESPONSE_status()\fR returns a status value.
.PP
\&\fBOCSP_response_get1_basic()\fR returns an \fI\s-1OCSP_BASICRESP\s0\fR structure pointer or
\&\fI\s-1NULL\s0\fR if an error occurred.
.PP
\&\fBOCSP_response_create()\fR returns an \fI\s-1OCSP_RESPONSE\s0\fR structure pointer or \fI\s-1NULL\s0\fR
if an error occurred.
.PP
\&\fBOCSP_RESPONSE_free()\fR does not return a value.
.PP
\&\fBOCSP_RESPID_set_by_name()\fR, \fBOCSP_RESPID_set_by_key()\fR, \fBOCSP_basic_sign()\fR, and
\&\fBOCSP_basic_sign_ctx()\fR return 1 on success or 0
on failure.
.PP
\&\fBOCSP_RESPID_match()\fR returns 1 if the \s-1OCSP_RESPID\s0 and the X509 certificate match
or 0 otherwise.
.SH "NOTES"
.IX Header "NOTES"
\&\fBOCSP_response_get1_basic()\fR is only called if the status of a response is
\&\fI\s-1OCSP_RESPONSE_STATUS_SUCCESSFUL\s0\fR.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBcrypto\fR\|(7)
\&\fBOCSP_cert_to_id\fR\|(3)
\&\fBOCSP_request_add1_nonce\fR\|(3)
\&\fBOCSP_REQUEST_new\fR\|(3)
\&\fBOCSP_resp_find_status\fR\|(3)
\&\fBOCSP_sendreq_new\fR\|(3)
\&\fBOCSP_RESPID_new\fR\|(3)
\&\fBOCSP_RESPID_free\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
The \fBOCSP_RESPID_set_by_name()\fR, \fBOCSP_RESPID_set_by_key()\fR and \fBOCSP_RESPID_match()\fR
functions were added in OpenSSL 1.1.0a.
.PP
The \fBOCSP_basic_sign_ctx()\fR function was added in OpenSSL 1.1.1.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2015\-2024 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.
