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A certificate authority (CA) is a trusted entity that issues Secure Sockets Layer (SSL) certificates. These digital certificates are data files used to cryptographically link an entity with a public key. Web browsers use them to authenticate content sent from web servers, ensuring trust in content delivered online.
How does a cross-signed certificate work?
A cross-certificate is a digital certificate issued by one Certificate Authority (CA) that is used to sign the public key for the root certificate of another Certificate Authority. Cross-certificates provide a means to create a chain of trust from a single, trusted, root CA to multiple other CAs.
When to use enterprise CAS for certificate approval?
If you want to enable automated certificate approval and automatic user certificate enrollment, use Enterprise CAs to issue certificates. These features are available only when the CA infrastructure is integrated with Active Directory.
Can a certificate be signed by multiple certificate authorities?
Also see Certificate with Multiple Signers? on the PKIX mailing list. PKIX is the Internet’s PKI as called out by the IETF. Yes, a certificate may be signed by multiple CA’s. The term for this is cross-signing. See https://letsencrypt.org/certificates/ for a good description of how this works.
What happens when you request a certificate from a stand alone CAS?
By default, all certificate requests that are submitted to stand-alone CAs are held in a pending queue until a CA administrator approves them. You can configure stand-alone CAs to issue certificates automatically upon request, but this is less secure, and it is usually not recommended because the requests are not authenticated.
A certification authority can refer to following: 1 An organization that vouches for the identity of an end user 2 A server that is used by the organization to issue and manage certificates More