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From "Richard Porter (JIRA)" <>
Subject [jira] [Commented] (WSS-611) CAs with the NameConstraint extension cause exceptions when verifying trust
Date Fri, 04 Aug 2017 15:29:00 GMT


Richard Porter commented on WSS-611:

Because of the binary test resources - PKCS12 keys and the keystore - I thought a PR would
be a bit less cumbersome than a patch.

Please note that there is some work beyond the scope of the bug. When I was writing the unit
tests I discovered issues with certificate chaining in the {{CertificateStore}} class and
fixed those as well.

> CAs with the NameConstraint extension cause exceptions when verifying trust
> ---------------------------------------------------------------------------
>                 Key: WSS-611
>                 URL:
>             Project: WSS4J
>          Issue Type: Bug
>          Components: WSS4J Core
>    Affects Versions: 2.1.10
>            Reporter: Richard Porter
>            Assignee: Colm O hEigeartaigh
>             Fix For: 2.2.0
> When a CA with NameConstraints is in the truststore, it causes a failure with any crypto
Cert provider. The underlying cause is an {{IllegalArgumentException}} thrown because the
Sequence data has been encoded as an Octet String and it is not being correctly decoded.
> While the relevant RFCs are a bit ambiguous with regard to extensions and whether they
are all encoded as Octet Strings or not, the documentation on Java's implementation of [X509Extension|]
are unambiguous: it will be a "DER-encoded OCTET string for the extension value.
> Beneath this issue lies another, the fact that the Sun default implementation of PKIX
path validation does not support TrustAnchors with NameConstraints attached. So fixing the
first issue also requires conditionally constructing TrustAnchors with NameConstraints or
with null.

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