A ksba_cert_issuer dokumentációja szerint:
With idx given as
0, this function returns the Distinguished Name (DN) of the certificate issuer; this usually is the name of a certification authority (CA). The format of the returned string is in accordance with RFC-2253.NULLis returned if the DN is not available; This is a severe error and actually should have been caught by the certificate reading function.
A tanúsítványban az issuer mezőnek mi a tartalma? Van benne DN, vagy csak CN van benne, esetleg egy formátum nélküli string?