Match Certificate & CSR

Using this tool, you may confirm whether a digital certificate matches a Certificate Signing Request (CSR). This is useful when you are managing many digital certificates and lose track of which CSR corresponds to a certificate.

As Subscriber Agreements require you to properly protect your private key at all times, we do not provide an online tool to match certificates to private keys. However, you can use OpenSSL to match the modulus of given private key and certificate. The command is:

          openssl rsa -in mykey.key -noout -modulus
          openssl x509 -in mycert.crt -noout -modulus


Enter your certificate in PEM format:
Enter your CSR:
Important Note:

PKI Widgets is a service based in the United States and Bermuda. This page is located in Bermuda. PKI Widgets does not require the input of any personal data and we recommend that you do not provide any when using these tools. QuoVadis confirms that any data you enter will not be retained on our databases beyond the operational requirements of the tool used. QuoVadis does not guarantee the availability or accuracy of these tools.