Who knows how to convert PEM encoded X.509 version 2 certificate with RSA public key to X.509 version 3?
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Who knows how to convert PEM encoded X.509 version 2 certificate with RSA public key to X.509 version 3?
As far as I know, you cannot change a certificate once issued. You need to re-issue the certificate. The reason being that the certificate contents are hashed by the CA and the hash is encrypted by the CA’s private key. If there is a change in the content of the certificate, the exisitng hash will no longer match the calculated hash making your certificate useless.