NAME

       X509V3_set_ctx, X509V3_set_issuer_pkey - X.509 v3 extension generation utilities

SYNOPSIS

        #include <openssl/x509v3.h>

        void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subject,
                            X509_REQ *req, X509_CRL *crl, int flags);
        int X509V3_set_issuer_pkey(X509V3_CTX *ctx, EVP_PKEY *pkey);

DESCRIPTION

       X509V3_set_ctx() fills in the basic fields of ctx of type X509V3_CTX, providing details potentially
       needed by functions producing X509 v3 extensions, e.g., to look up values for filling in authority key
       identifiers.  Any of subject, req, or crl may be provided, pointing to a certificate, certification
       request, or certificate revocation list, respectively.  When constructing the subject key identifier of a
       certificate by computing a hash value of its public key, the public key is taken from subject or req.
       Similarly, when constructing subject alternative names from any email addresses contained in a subject
       DN, the subject DN is taken from subject or req.  If subject or crl is provided, issuer should point to
       its issuer, for instance to help generating an authority key identifier extension.  Note that if subject
       is provided, issuer may be the same as subject, which means that subject is self-issued (or even self-
       signed).  flags may be 0 or contain X509V3_CTX_TEST, which means that just the syntax of extension
       definitions is to be checked without actually producing an extension, or X509V3_CTX_REPLACE, which means
       that each X.509v3 extension added as defined in some configuration section shall replace any already
       existing extension with the same OID.

       X509V3_set_issuer_pkey() explicitly sets the issuer private key of the certificate that has been provided
       in ctx.  This should be done for self-issued certificates (which may be self-signed or not) to provide
       fallback data for the authority key identifier extension.

RETURN VALUES

       X509V3_set_ctx() and X509V3_set_issuer_pkey() return 1 on success and 0 on error.

SEE ALSO

       X509_add_ext(3)

HISTORY

       X509V3_set_issuer_pkey() was added in OpenSSL 3.0.

       CTX_TEST was deprecated in OpenSSL 3.0; use X509V3_CTX_TEST instead.

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
       <https://www.openssl.org/source/license.html>.