Dear Michael,

Fortunatly I can working with 5.3.2 thus I can wait for the newer version.
I am grateful to you for finding out what is causing the problem,  
because I am near to a project dead line thus I do not have spare time  
for it.

Thanks a lot,
Attila.


Idézet (mkl <[email protected]>):

> Bruno, Attila,
>
> there indeed is a bug in CertificateVerification.VerifyCertificate in
> iTextSharp.
>
> In Java there is a test cert.hasUnsupportedCriticalExtension in that method,
> and only if that test fails, there is an explicit second test whether the
> cert has a specific selection of critical extensions which has been
> discovered to falsely fail the hasUnsupportedCriticalExtension test in some
> LTV scenario.
>
> In C# that explicit test in 5.3.3 is now executed always (most likely there
> is no equivalent to hasUnsupportedCriticalExtension there), i.e. only the
> special case tested for and any case with even less critical extensions is
> accepted. And this is wrong, there are many other supported critical
> extensions.
>
> 1T3XT BVBA wrote
>> I'm not sure if we really need to test for extensions.
>
> Well, a serious verification component must check critical extensions, cf.
> the RFCs:
>
> RFC 3280, 5280 wrote
>> A certificate using system MUST reject the certificate if it encounters a
>> critical extension it does not recognize; however, a non-critical
>> extension MAY be ignored if it is not recognized.
>
> Regards,   Michael
>
>
>
> --
> View this message in context:  
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>
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