At 07:37 AM 3/2/2004, Luis Pascual Forner wrote:
>  I'm implementing PDF signatures using iText + BouncyCastle
>(a Java Cryptography API, www.bouncycastle.org).

     Cool!


>  Up to the moment I have made a procedure to validate
>detached PKCS#7 signatures (/Filter /Adobe.PPKLite /SubFilter
>/adbe.pkcs7.detached).

     Great start!


>  Also I have made a program to sign a document but, although I
>could verify the signature with my procedure, it fails
>with Acrobat and Acrobat Reader (vers. 5 and 6), with the error
>message "SigDict /Contents illegal data".

     Sounds like you are putting the wrong kind of data in that
dictionary then...Have you compared it to what Acrobat itself puts
in? Have you compared dictionaries between you and Acrobat?


Leonard
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Leonard Rosenthol                   <mailto:leonardr@(protected)>
Chief Technical Officer               <http://www.pdfsages.com>
PDF Sages, Inc.                    215-629-3700 (voice)
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