I have some queries about DIgital Certification.
In the real time senario, Suppose I want to send a message in a encrypted format using your public key.
I need your digitall certificate which I can request to CA.But how this request is made to CA. There are lots of CAs and from whom you have aquired the certificate that I don't know so how can I get your certificate .
I am having your Digital certificate.While using your certificate for encrypting the content,who will check the validity of your certificate.
Suppose all of the above task is completed (means your certificate is checked and endorsed by third part). I have sent you document with digitally sign using my Digitally Certificate which you are supposed to recieve after two days.Before you opened the document ,my Certificate is revoked.Can you stll see the document or document is no longer valid?
How all these senarioes are being solved in real time.
waiting for your reply,