I was wondering, if there is a way to extend the duration of an existing certificate.
- Or is simply a new certificate requested for the old public key?
- Is this mentioned somewhere in the certificate? (Someone told me that the trustworthiness of websites is rated on how often the extended the certificate)
- Does the serial number change in that case?
- What are reasons to use the old keypair instead of requesting a certificate for a new keyPair?