CA matcher
Checks whether a certificate was actually signed by a candidate CA (or intermediate) certificate — a real cryptographic signature check, not just a name comparison.
What is CA matcher?
Confirms that a certificate was genuinely signed by a specific CA or intermediate certificate — a real cryptographic signature check, which catches things a superficial "do the names look right" comparison would miss.
How to use it
Paste the certificate to check and the candidate CA/intermediate certificate — the tool verifies the actual digital signature, not just whether the issuer name matches.
Example
A certificate correctly signed by its stated CA reports: Valid — signed by this CA.