Can a SSL certificate be signed by multiple certificate authorities?
No, the X509 certificate format up to version 3 is designed to contain exactly one signature.
certificate-authority
What’s the difference between rapidSSL and geotrust certificates? [closed]
The job of the SSL certificate authority(CA)/provider is to validate your organizational identity so that when customers access your web site, they not only get the padlock for security, but they know that your identity as the fully qualified hostname are authentic and not some phishing scam. True, most all users look no further than … Read more