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My understanding is that intermediate CAs can be limited to issuing certificates only for specific domains. Is it not possible to get a root-signed intermediat
by isostatic 8y ago
My understanding is that intermediate CAs can be limited to issuing certificates only for specific domains.
Is it not possible to get a root-signed intermediate CA for someone who can prove control over a domain? This would allow you to issue certificates for "xxx.internal.mydomain.com", without the need for a wildcard certificate, and without the need for using a public CA for every individual certificate?
CT would still be a problem unless the CA could be flagged to "allow non-CT certificates", and the browser ignore those requirements as they ignore CT requirements for manually installed root certs
The benefits to this is
1) there's no need to manually install a root certificate on each client device
2) Your internal domains are not reliant on an external CA
- throw0101a 8y ago> My understanding is that intermediate CAs can be limited to issuing certificates only for specific domains. Technically, X.509 allows for constraining things, [1] but from a practical perspective [2] it's not really implemented. [1] https://tools.ietf.org/html/rfc5280#section-4.2.1.10 https://tools.ietf.org/html/rfc5280#section-4.2.1.10 [2] https://security.stackexchange.com/questions/31376/ https://security.stackexchange.com/questions/31376/
- isostatic 8y agoThat thread does indicate things are changing though and it's becoming more and more accepted.