hello everyone
I have a Cms in ANS1 Structure and a pdfpkcs7 object and i want to set this
cms to the Pdfpkcs7 obj now i extract signature data from my cms in the cod
of :
OrgBouncyCastleCmsallias.CmsSignedData attachedSignedData = new
OrgBouncyCastleCmsallias.CmsSignedData(Convert.FromBase64String(CMS));
OrgBouncyCastleCmsallias.SignerInformationStore str =
attachedSignedData.GetSignerInfos();
byte[] SigData = null;
foreach (OrgBouncyCastleCmsallias.SignerInformation s in
str.GetSigners())
SigData = s.GetSignature();
but i dont want to do this and i need to use all cms to set to the pdfpkcs7
object and my code to use pdfpkcs7 obj is here:
public byte[] Sign(Stream data)
{
byte[] hash = DigestAlgorithms.Digest(data, "SHA1");
PdfPKCS7 sgn = new PdfPKCS7(null, chain, "SHA1", false);
byte[] SigData2 = Convert.FromBase64String(SigData);
sgn.SetExternalDigest(SigData2, null, "RSA");
return sgn.GetEncodedPKCS7(hash, cal, null, null, null,
CryptoStandard.CMS);
}
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