An SSL lock Your private key should always remain private. The only person that should see your private key is your hosting company, if they ask for it. However, do not delete your private key, as it is required for your certificate to work. Related posts: What is a private key used for? I have accidentally deleted my “private key” what can I do now? What is the difference between 1024- and 2048-bit key lengths? I purchased a renewal certificate, but my website still displays the old certificate. What should I do?