Api function
#include <gnutls/x509.h>
int gnutls_x509_crt_check_issuer(gnutls_x509_crt_t cert, gnutls_x509_crt_t issuer);
is the certificate to be checked
is the certificate of a possible issuer
This function will check if the given certificate was issued by the given issuer. It checks the DN fields and the authority key identifier and subject key identifier fields match.
It will return true (1) if the given certificate is issued by the given issuer, and false (0) if not.
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