Can a SSL certificate be signed by multiple certificate authorities?

ssl-certificate certificate-authority
Ben Sand picture Ben Sand · Jun 28, 2011 · Viewed 12.6k times · Source

It would be nice to spread the trust around a bit, so we don't have to rely on just one root in any instance.

Is it possible to have a single certificate signed by more than one CA?

Answer

President James K. Polk picture President James K. Polk · Jun 29, 2011

No, the X509 certificate format up to version 3 is designed to contain exactly one signature.

Related questions

How to resolve "enter the password for credential storage" issue?

So I am playing around with fiddler web proxy. I need to decrypt https traffic. So I am trying to put the fiddler root CA cert in my device trust store. But it keeps asking me "Enter the password for …

Read More
"Error opening CA private key" on Windows

I am running on Windows Server 2003, and installed Win64 OpenSSL v1.0.1i Light No matter what guide I follow to set it up, I always end up with the following error when trying to actually sign a certificate openssl ca …

Read More
Android - Security with HTTPS and SSL - Unknown certificate authority - NativeCrypto Exception

Following this one: https://developer.android.com/intl/es/training/articles/security-ssl.html part:Unknown certificate authority - example of University of Washington. Now I can access and communicate with the server. I got the response from the server as …

Read More