[pkix] Managing Long-Lived CA certs
"Dr. Pala" <director@openca.org> Mon, 17 July 2017 14:19 UTC
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To: pkix@ietf.org
From: "Dr. Pala" <director@openca.org>
Organization: OpenCA Labs
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Date: Mon, 17 Jul 2017 16:19:44 +0200
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Subject: [pkix] Managing Long-Lived CA certs
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Hi PKIX, I have a small question for the list regarding long-lived CA certificates. Especially in the context of device certificates, we often see the use of extra long-lived certificates for Root and Sub CAs (e.g., 35+ years) combined with limited key sizes (e.g., p256). Until we have a supported mechanism for reprovisioning devices (...), one possible solution for limiting the exposure of the private key would be to have a scoped certificate issuance period. What I am thinking about would be adding an extension that says: "This CA can issue certificates from up to 5 years from the validFrom, after this, just use it to provide revocation information". This might provide some protection in case the CA key is compromised after the initial 5 years of validity (e.g., certificates issued after that date shall be rejected). Does such extension exists today ? If not, could this be some work for LAMPS/SPASM WG ? Cheers, Max -- Best Regards, Massimiliano Pala, Ph.D. OpenCA Labs Director OpenCA Logo
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Rob Stradling
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Erik Andersen
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Erik Andersen
- Re: [pkix] Managing Long-Lived CA certs Carl Wallace
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Santosh Chokhani
- Re: [pkix] Managing Long-Lived CA certs Carl Wallace
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Peter Gutmann
- Re: [pkix] Managing Long-Lived CA certs Erik Andersen
- Re: [pkix] Managing Long-Lived CA certs David A. Cooper
- Re: [pkix] Managing Long-Lived CA certs Peter Gutmann
- Re: [pkix] Managing Long-Lived CA certs David A. Cooper
- Re: [pkix] Managing Long-Lived CA certs Peter Gutmann
- Re: [pkix] Managing Long-Lived CA certs Erik Andersen
- Re: [pkix] Managing Long-Lived CA certs swilson
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Anders Rundgren
- Re: [pkix] Managing Long-Lived CA certs Denis
- Re: [pkix] Managing Long-Lived CA certs Carl Wallace
- Re: [pkix] Managing Long-Lived CA certs EG Giessmann
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
- Re: [pkix] Managing Long-Lived CA certs Dr. Pala
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