[openssl-dev] verify fails for 3-level cert chain when usingX509v3 Authority Key Identifier

[陈雨亭]

Believe that this question will be raised again and again...

Yuting Chen

-----Original Message----- 
From: Erwann Abalea
Sent: Monday, June 01, 2015 10:12 AM
To: openssl-dev at openssl.org
Subject: Re: [openssl-dev] verify fails for 3-level cert chain when 
usingX509v3 Authority Key Identifier

Bonsoir John,

> Le 1 juin 2015 à 17:20, John Lofgren via RT <rt at openssl.org> a écrit :
> […]

> One remaining question. If this extension is "only a helper and MUST NOT 
> be
> used to (in)validate a certificate chain" as you say or as the spec says
> "non-critical", then why does 'openssl verify' reject this chain?

That’s an open question. This topic has been raised on IETF PKIX last 
april.
The normative validation algorithm in section 6 of RFC5280 doesn’t use 
AKI/SKI.
RFC4158 is about path construction and is also clear on not using AKI/SKI to 
eliminate a certificate chain.

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