Verify the Integrity of your SSL Certificate and Private Key
Free Certificate Key Matcher Tool
Quickly Verify Your Key Pairs, SSL Certificates and CSR Match
The Certificate Key Matcher is an excellent tool for handling numerous SSL certificate orders—for instance, enterprise-level orders, including many SSL certificates, are prone to management errors.
Want to Check Whether Your Certificate Matches or Not?
This Certificate Key Matcher allows you to determine if a private key and a certificate match each other or whether a certificate matches a certificate signing request (CSR). Keeping track of which certificate corresponds to which private key or which CSR was used to produce which certificate can be difficult when working with various certificates. Finding out whether a private key or a CSR matches a certificate is easy with the assistance of the Certificate Key Matcher tool.
However, you can use the free Certificate Key Matcher tool to determine whether a CSR or private key created for an SSL certificate matches the SSL certificate.
OpenSSL Commands to check Whether a Certificate Matches a Private key, or a CSR Matches a Certificate:
openssl pkey -in privateKey.key -pubout -outform pem | sha256sum
openssl x509 -in certificate.crt -pubkey -noout -outform pem | sha256sum
openssl req -in CSR.csr -pubkey -noout -outform pem | sha256sum