You want to put a sha256 where it doesn't fit. Forget about it! There are two ways of signing in PDF using a CMS container (without going into CAdES): adbe.pkcs7.detached and adbe.pkcs7.sha1. If using adbe.pkcs7.sha1 the digest that goes into the data section in the CMS must use sha1. If using detached the digest used depend on the signature in the certificate and you can't chose it. If you still want to use sha256 you'll have to ask someone else as I've no idea what you're talking about.
Paulo On Tue, Mar 20, 2012 at 10:50 PM, Rocco David <[email protected]> wrote: > I see that example and I try him.It's ok for sha1 but it doesn't work when I > try to force digest algorithm. > The problem is that *cmsSigner.DigestAlgorithm * is sha1 by default (i see > it with debug into Visual Studio). > In my previous post I said that when trying to set it to sha256 at line > signedCms.ComputeSignature (CmsSigner, false); > > *I could return Invalid algorithm specified*. > > Could you please describe more clearly what you mean by: > "/The detached method Does not use an external hash, just the one defined > in the signature (RsaWithSha256 for example). This Means That You > do not have any hash and supply the cms with the full doc /" > Thanks again for the availability > > -- > View this message in context: > http://itext-general.2136553.n4.nabble.com/Problem-to-sign-using-Sha256-tp4471288p4490624.html > Sent from the iText - General mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > This SF email is sponsosred by: > Try Windows Azure free for 90 days Click Here > http://p.sf.net/sfu/sfd2d-msazure > _______________________________________________ > iText-questions mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/itext-questions > > iText(R) is a registered trademark of 1T3XT BVBA. > Many questions posted to this list can (and will) be answered with a > reference to the iText book: http://www.itextpdf.com/book/ > Please check the keywords list before you ask for examples: > http://itextpdf.com/themes/keywords.php ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ iText-questions mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/itext-questions iText(R) is a registered trademark of 1T3XT BVBA. Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
