hi,
as you said to me , i see again the web page I refered and in exactly
http://itextpdf.sourceforge.net/howtosign.html#signextitextsharp2 this
exemple.
I force the DigestAlgorithm of CmsSigner but when it ComputeSignature i
have this message:
Invalid algorithm specified.
System.Security.Cryptography.Pkcs.ContentInfo contentInfo = new
System.Security.Cryptography.Pkcs.ContentInfo(msg);
// Instantiate SignedCms object with the ContentInfo above.
// Has default SubjectIdentifierType IssuerAndSerialNumber.
SignedCms signedCms = new SignedCms(contentInfo, detached);
// Formulate a CmsSigner object for the signer.
CmsSigner cmsSigner = new CmsSigner(signerCert);
* Oid oid = new Oid();
oid.FriendlyName = "SHA256";
cmsSigner.DigestAlgorithm = oid;*
// Include the following line if the top certificate in the
// smartcard is not in the trusted list.
cmsSigner.IncludeOption = X509IncludeOption.EndCertOnly;
// Sign the CMS/PKCS #7 message. The second argument is
// needed to ask for the pin.
signedCms.ComputeSignature(cmsSigner, false);
Can I have some help please
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