Digital self-signed certification update expiry date

Question

I have a self-signed digital certificate created using java keytool command. Can I update only the expiry date of the keystore file, without creating new keystore?
Any help?

Answer 1

You can't change the validity period without resigning the certificate. However, you don't have to create a new keystore. Just sign the certificate again with new expiration date and replace it in the keystore.