1X509_CHECK_ISSUED(3)                OpenSSL               X509_CHECK_ISSUED(3)
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NAME

6       X509_check_issued - checks if certificate is issued by another
7       certificate
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SYNOPSIS

10        #include <openssl/x509v3.h>
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12        int X509_check_issued(X509 *issuer, X509 *subject);
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DESCRIPTION

15       This function checks if certificate subject was issued using CA
16       certificate issuer. This function takes into account not only matching
17       of issuer field of subject with subject field of issuer, but also
18       compares authorityKeyIdentifier extension of subject with
19       subjectKeyIdentifier of issuer if authorityKeyIdentifier present in the
20       subject certificate and checks keyUsage field of issuer.
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RETURN VALUES

23       Function return X509_V_OK if certificate subject is issued by issuer or
24       some X509_V_ERR* constant to indicate an error.
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SEE ALSO

27       X509_verify_cert(3), X509_check_ca(3), verify(1)
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30       Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
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32       Licensed under the OpenSSL license (the "License").  You may not use
33       this file except in compliance with the License.  You can obtain a copy
34       in the file LICENSE in the source distribution or at
35       <https://www.openssl.org/source/license.html>.
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391.1.1g                            2020-04-23              X509_CHECK_ISSUED(3)
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