[Servercert-wg] [External Sender] Discussion about single-purpose client authentication leaf certificates issued from a server TLS Issuing CA

[Pedro FUENTES]

Sorry, small correction… 

Where I said “you can’t propose clientAuth-only certs that work in Chrome”
I wanted to say “you can’t propose clientAuth-only certs that chain to Chrome Store”

P

> On 16 May 2024, at 11:20, Pedro FUENTES via Servercert-wg <servercert-wg at cabforum.org> wrote:
> 
> Hello Dimitris,
> I’m following closely this as I find very important.
> 
> About…
>> This is easy to answer. Some use cases need single-purpose client authentication certificates. There are numerous use cases where client authentication certificates are used for strong authentication, I'm sure you are aware of such use cases. While client authentication use cases can ALL be supported by non-public CAs, there are some regulatory requirements that demand such certificates be issued from an audited and publicly-trusted CA. In fact, HARICA has participated in public tenders where client authentication certificates need to be issued from a CA that chains to Apple, Microsoft and Mozilla Root Stores. Client authentication certificates are asked in addition to server TLS certificates.
> 
> 
> I don’t know if you didn’t mention Chrome for a particular reason, but actually that’s the Root program that makes me scratch my head while reading these discussions… because AFAIK they only include Roots for TLS serverAuth purposes, and not for clientAuth. So (again AFAIK, I may be wrong) you can’t propose clientAuth-only certs that work in Chrome unless these come from a Root that is included for TLS serverAuth.
> 
> Apart of that, just to say that my current understanding is that the BR as they are today don’t allow the issuance of these certificates, so maybe it’s more pragmatic to assume the status-quo, and focus the discussion if the BR should be modified to implicitly or explicitly allow this.
> 
> Just my two cents…
> 
> P 
> 
> 
> 
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WISeKey SA
Pedro Fuentes
CSO - Trust Services Manager
Office: + 41 (0) 22 594 30 00
Mobile: + 41 (0) 791 274 790
Address: Avenue Louis-Casaï 58 | 1216 Cointrin | Switzerland
Stay connected with WISeKey <http://www.wisekey.com/>

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