S/MIME
- What exactly is a certificate?
- What is a root certificate?
- What is an intermediate certificate?
- What is an end-user certificate?
- How can a certificate have ‘child’ certificates?
- Do ‘child’ certificates share keys with the parent?
- Why do certificates expire?
- How does the gateway handle expired certificates?
- What is the difference between a signature and an encryption certificate?
- How does the gateway handle key usage and extended key usage?
- Do we need separate signing and encryption certificates?
- Can we use a self-signed root certificate or should it be issued by a trusted CA?
- What does it mean when a certificate is revoked?
- What is a certificate Trust List (CTL)?
- What does the key usage nonRepudiation mean?