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=pod
=head1 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
=head1 SYNOPSIS
#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);
=head1 DESCRIPTION
OCSP_response_status() returns the OCSP response status of I<resp>. It returns
one of the values: I<OCSP_RESPONSE_STATUS_SUCCESSFUL>,
I<OCSP_RESPONSE_STATUS_MALFORMEDREQUEST>,
I<OCSP_RESPONSE_STATUS_INTERNALERROR>, I<OCSP_RESPONSE_STATUS_TRYLATER>
I<OCSP_RESPONSE_STATUS_SIGREQUIRED>, or I<OCSP_RESPONSE_STATUS_UNAUTHORIZED>.
OCSP_response_get1_basic() decodes and returns the I<OCSP_BASICRESP> structure
contained in I<resp>.
OCSP_response_create() creates and returns an I<OCSP_RESPONSE> structure for
I<status> and optionally including basic response I<bs>.
OCSP_RESPONSE_free() frees up OCSP response I<resp>.
OCSP_RESPID_set_by_name() sets the name of the OCSP_RESPID to be the same as the
subject name in the supplied X509 certificate I<cert> for the OCSP responder.
OCSP_RESPID_set_by_key_ex() sets the key of the OCSP_RESPID to be the same as the
key in the supplied X509 certificate I<cert> for the OCSP responder. The key is
stored as a SHA1 hash. To calculate the hash the SHA1 algorithm is fetched using
the library ctx I<libctx> and the property query string I<propq> (see
L<crypto(7)/ALGORITHM FETCHING> for further information).
OCSP_RESPID_set_by_key() does the same as OCSP_RESPID_set_by_key_ex() except
that the default library context is used with an empty property query string.
Note that an OCSP_RESPID can only have one of the name, or the key set. Calling
OCSP_RESPID_set_by_name() or OCSP_RESPID_set_by_key() will clear any existing
setting.
OCSP_RESPID_match_ex() tests whether the OCSP_RESPID given in I<respid> matches
with the X509 certificate I<cert> based on the SHA1 hash. To calculate the hash
the SHA1 algorithm is fetched using the library ctx I<libctx> and the property
query string I<propq> (see L<crypto(7)/ALGORITHM FETCHING> for further
information).
OCSP_RESPID_match() does the same as OCSP_RESPID_match_ex() except that the
default library context is used with an empty property query string.
OCSP_basic_sign() signs OCSP response I<brsp> using certificate I<signer>, private key
I<key>, digest I<dgst> and additional certificates I<certs>. If the I<flags> option
I<OCSP_NOCERTS> is set then no certificates will be included in the response. If the
I<flags> option I<OCSP_RESPID_KEY> is set then the responder is identified by key ID
rather than by name. OCSP_basic_sign_ctx() also signs OCSP response I<brsp> but
uses the parameters contained in digest context I<ctx>.
=head1 RETURN VALUES
OCSP_RESPONSE_status() returns a status value.
OCSP_response_get1_basic() returns an I<OCSP_BASICRESP> structure pointer or
I<NULL> if an error occurred.
OCSP_response_create() returns an I<OCSP_RESPONSE> structure pointer or I<NULL>
if an error occurred.
OCSP_RESPONSE_free() does not return a value.
OCSP_RESPID_set_by_name(), OCSP_RESPID_set_by_key(), OCSP_basic_sign(), and
OCSP_basic_sign_ctx() return 1 on success or 0
on failure.
OCSP_RESPID_match() returns 1 if the OCSP_RESPID and the X509 certificate match
or 0 otherwise.
=head1 NOTES
OCSP_response_get1_basic() is only called if the status of a response is
I<OCSP_RESPONSE_STATUS_SUCCESSFUL>.
=head1 SEE ALSO
L<crypto(7)>
L<OCSP_cert_to_id(3)>
L<OCSP_request_add1_nonce(3)>
L<OCSP_REQUEST_new(3)>
L<OCSP_resp_find_status(3)>
L<OCSP_sendreq_new(3)>
L<OCSP_RESPID_new(3)>
L<OCSP_RESPID_free(3)>
=head1 HISTORY
The OCSP_RESPID_set_by_name(), OCSP_RESPID_set_by_key() and OCSP_RESPID_match()
functions were added in OpenSSL 1.1.0a.
The OCSP_basic_sign_ctx() function was added in OpenSSL 1.1.1.
=head1 COPYRIGHT
Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut
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