Re: Certificates with DN UniqueIdentifier

Peter Gutmann <[email protected]>
Newsgroups gmane.comp.encryption.cryptlib
Message-ID <[email protected]>
Mario Crypto <[email protected]> writes:

>This works fine with almost any certificate, but when I use a certificate
>with the DN UniqueIdentifier in the "Subject" and/or the "Issuer" this
>function fails. Indeed when debuging my code, I realize that it breaks in the
>function "readAVA" part of the file "cert/dn_rw.c", lines 79-81:

Since the UniqueIdentifier usually (meaning in pretty much every case I've
encountered so far) contains an encapsulated ASN.1 object, cryptlib tries to
burrow inside it to extract the inner object.  In this case there's no inner
object, so cryptlib thinks there's an error.  To fix this, just comment out
the 'if( tag == BER_BITSTRING )' code block.

>I use this kind of certificates in several services with no problem.

Probably because other implementations just ignore the field, e.g. I've just
checked the Windows cert browser and it doesn't even process it.

Peter.

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