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X509_CHECK_ISSUED(3)  DragonFly Library Functions Manual  X509_CHECK_ISSUED(3)

NAME

X509_check_issued - check whether a certificate was issued using a given CA certificate

SYNOPSIS

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

DESCRIPTION

This function checks whether the certificate subject was issued using the CA certificate issuer. It does the following checks: * match the issuer field of subject against the subject field of issuer * if authorityKeyIdentifier is present in the subject certificate, compare it to the subjectKeyIdentifier of issuer * check the keyUsage field of issuer.

RETURN VALUES

This function returns X509_V_OK if the certificate subject is issued by issuer, or some X509_V_ERR* constant to indicate an error.

SEE ALSO

X509_check_ca(3), X509_new(3), X509_verify_cert(3)

HISTORY

X509_check_issued() first appeared in OpenSSL 0.9.6 and has been available since OpenBSD 2.9. DragonFly 5.9-DEVELOPMENT June 6, 2019 DragonFly 5.9-DEVELOPMENT

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