Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

Sorry if this is a silly question, but I'm new to all these certificates stuff :)

Let's say I have a digital certificate issued by my company (for email) with:

  • Signature algorithm: md5RSA
  • Public Key: RSA (512 bit)

Is it possible to convert this to use:

  • Signature algorithm: sha1RSA
  • Public Key: RSA (2048 bit)

Or it needs to be recreated by my issuer with the new settings?

share|improve this question

1 Answer 1

up vote 3 down vote accepted

It needs to be recreated. Public and private keys are made in pairs at the same time.

share|improve this answer
    
As I suspected. Thank you! –  Bogdan Nov 22 '10 at 11:29

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.