Oh, that information is worth many horrible hours !

Thanks alot

Andreas



----- Original Message ----
From: rpr4394 <[email protected]>
To: [email protected]
Sent: Thursday, May 7, 2009 6:01:07 PM
Subject: Re: [iText-questions] OCSP and timestamping PDF trouble with PKCS11 
provider



Paulo Soares-3 wrote:
> 
> Yes, well sort of. Acrobat still complains about the OCSP validity but I
> suspect that the problem has to do with the info sent to the responder,
> probably the nonce. Should be fixed this weekend.
> 
> Paulo
> 

Paulo - I had the same issue.  It appears that Acrobat expects an OCSP nonce
to be an Octet string wrapped inside an Octet string - Acrobat double
encodes the nonce's in it's OCSP requests this way.  Not example RFC 2560
compliant in my opinion - the nonce should be able to be any byte sequence,
not have to be a string within a string.

Here's a sample ASN1 dump of a "normal" nonce:

SEQUENCE {
  OBJECT IDENTIFIER
    ocspNonce (1 3 6 1 5 5 7 48 1 2)
  OCTET STRING
      3B 57 B1 F8 C6 E9 3D 07 54 13 84 7B DD 06 94 DE 5A 11 46 9D
  }
}

Here is what I had to do to make Acrobat recognize the response - note the
Octet string inside the Octet string:

SEQUENCE {
  OBJECT IDENTIFIER
    ocspNonce (1 3 6 1 5 5 7 48 1 2)
  OCTET STRING, encapsulates {
    OCTET STRING
      3B 57 B1 F8 C6 E9 3D 07 54 13 84 7B DD 06 94 DE 5A 11 46 9D
    }
  }
}

Thanks,

Mark

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