easy:SetOpt_IssuerCert_Blob(blob)
This option makes sense only when used in combination with the
#CURLOPT_SSL_VERIFYPEER
option. Otherwise, the result of the check is
not considered as failure.
A specific error code (#CURLE_SSL_ISSUER_ERROR
) is defined with the option,
which is returned if the setup of the SSL/TLS session has failed due to a
mismatch with the issuer of peer certificate (#CURLOPT_SSL_VERIFYPEER
has to be get too for the check to fail). (Added in 7.19.0)