Re: Domain-validated name-constrained CA certificates?

2010-04-07 Thread Jean-Marc Desperrier
Matt McCutchen wrote: On Apr 6, 5:54 am, Jean-Marc Desperrierjmd...@gmail.com wrote: Matt McCutchen wrote: An extended key usage of TLS Web Server Authentication on the intermediate CA would constrain all sub-certificates, no? You are here talking about a proprietary Microsoft

Re: Domain-validated name-constrained CA certificates?

2010-04-07 Thread Matt McCutchen
On Apr 7, 4:54 am, Jean-Marc Desperrier jmd...@gmail.com wrote: Matt McCutchen wrote: On Apr 6, 5:54 am, Jean-Marc Desperrierjmd...@gmail.com  wrote:  Matt McCutchen wrote:    An extended key usage of TLS Web Server Authentication on the    intermediate CA would constrain all

Re: Domain-validated name-constrained CA certificates?

2010-04-07 Thread Nelson B Bolyard
On 2010-04-07 01:54 PST, Jean-Marc Desperrier wrote: Matt McCutchen wrote: On Apr 6, 5:54 am, Jean-Marc Desperrierjmd...@gmail.com wrote: Matt McCutchen wrote: An extended key usage of TLS Web Server Authentication on the intermediate CA would constrain all sub-certificates, no? You

Re: Domain-validated name-constrained CA certificates?

2010-04-07 Thread Matt McCutchen
On Apr 7, 12:47 am, Kurt Seifried k...@seifried.org wrote: What about www.paypal.com[NULL].yourcompany.com? I assume that would be allowed by the name constraint with respect to fixed software, but still hit some older software that has the NULL certificate bug. I think

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Jean-Marc Desperrier
Matt McCutchen wrote: An extended key usage of TLS Web Server Authentication on the intermediate CA would constrain all sub-certificates, no? You are here talking about a proprietary Microsoft extension of the X509 security model. -- dev-tech-crypto mailing list

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Jean-Marc Desperrier
Matt McCutchen wrote: A name-constrained intermediate certificate could be quite convenient for the large organizations that are presently demanding their users to trust private CAs for the whole Web (see bug 501697). Ah ! The direction of restricting people who currently use sub-CA for their

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Rob Stradling
On Tuesday 06 April 2010 10:54:49 Jean-Marc Desperrier wrote: Matt McCutchen wrote: An extended key usage of TLS Web Server Authentication on the intermediate CA would constrain all sub-certificates, no? You are here talking about a proprietary Microsoft extension of the X509 security

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Matt McCutchen
On Apr 6, 5:54 am, Jean-Marc Desperrier jmd...@gmail.com wrote: Matt McCutchen wrote: An extended key usage of TLS Web Server Authentication on the intermediate CA would constrain all sub-certificates, no? You are here talking about a proprietary Microsoft extension of the X509 security

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Matt McCutchen
On Apr 6, 5:58 am, Jean-Marc Desperrier jmd...@gmail.com wrote: Ah ! The direction of restricting people who currently use sub-CA for their purpose to make it more secure will certainly be much more successful than presenting it as allowing many more people to have their own sub-CA. But I do

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Eddy Nigg
On 04/07/2010 05:01 AM, Matt McCutchen: On Apr 6, 5:58 am, Jean-Marc Desperrierjmd...@gmail.com wrote: Ah ! The direction of restricting people who currently use sub-CA for their purpose to make it more secure will certainly be much more successful than presenting it as allowing many more

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Matt McCutchen
On Wed, 2010-04-07 at 05:17 +0300, Eddy Nigg wrote: On 04/07/2010 05:01 AM, Matt McCutchen: But I do want to allow many more people to have their own sub-CAs, unless there is an actual technical reason why it is a bad idea, in which case I am hoping you will tell me. Yes, for example do

Re: Domain-validated name-constrained CA certificates?

2010-04-06 Thread Kurt Seifried
This is not an issue.  The name constraint makes it impossible for a domain registrant to issue a certificate that validates for a server name outside that domain.  Hence, anything bad I do with my intermediate certificate could only hurt me as registrant of mattmccutchen.net. What about

Domain-validated name-constrained CA certificates?

2010-04-04 Thread Matt McCutchen
[This thread is to continue the discussion from bug 554442; this message recaps the substance of the existing discussion.] It would be great if a Mozilla-recognized CA would be willing to give me, as the registrant of mattmccutchen.net, an intermediate CA certificate with a critical name

Re: Domain-validated name-constrained CA certificates?

2010-04-04 Thread Jean-Marc Desperrier
On 04/04/2010 08:32, Matt McCutchen wrote: [...] It would be great if a Mozilla-recognized CA would be willing to give me, as the registrant of mattmccutchen.net, an intermediate CA certificate with a critical name constraint limiting it to mattmccutchen.net. I don't believe this taking a

Re: Domain-validated name-constrained CA certificates?

2010-04-04 Thread Matt McCutchen
On Apr 4, 6:30 pm, Jean-Marc Desperrier wrote: On 04/04/2010 08:32, Matt McCutchen wrote: [...] It would be great if a Mozilla-recognized CA would be willing to give me, as the registrant of mattmccutchen.net, an intermediate CA certificate with a critical name constraint limiting it to