签名PDF文档

目前我升级我这是使用iTextSharp的5.0.0至5.4.5（最新）做旧的应用程序......但我在获得同等代码签名PDF文档

PdfSignatureAppearance.SetCrypto(this.myCert.Akp, this.myCert.Chain, null, PdfSignatureAppearance.SELF_SIGNED);

问题有谁能帮我解决这个问题吗？

在此先感谢...

来源

2014-01-31 Posting Pro

签名API（至少是您期望使用的最高级别）已经发生了一些变化。您可能需要阅读[PDF文档的数字签名]（http://itextpdf.com/book/digitalsignatures），*由Bruno Lowagie（iText Software）*编写的白皮书*与iText（Sharp）签署。其中的代码示例使用Java，但C＃版本也可用。 – mkl

你可以给我提供C＃链接吗？ –

它们至少可以在[tutorial]（http://svn.code.sf.net/p/itextsharp/code/tutorial）中的subversion版本库中找到;不过，我不知道是否有任何美化版本。 – mkl

我签使用5.5版本的iTextSharp的的PDF文档。以下是示例代码。

 // Set the reader (PdfReader) and output (Stream) first 
     PdfStamper stamper = PdfStamper.CreateSignature(reader, output, '\0'); 

     PdfSignatureAppearance signatureAppearance = stamper.SignatureAppearance; 
     signatureAppearance.SignatureRenderingMode = PdfSignatureAppearance.RenderingMode.GRAPHIC_AND_DESCRIPTION; 
     signatureAppearance.Reason = "I love signing"; 
     signatureAppearance.LocationCaption = ""; 
     signatureAppearance.SignatureGraphic = Image.GetInstance(this.imageFolderPath + "sign.png"); 

     signatureAppearance.SetVisibleSignature(
      new Rectangle(100, 100, 300, 200), 
      reader.NumberOfPages, 
      "Signature"); 

     // Get certificate from store, here I am reading file 
     X509Certificate2 cert = new X509Certificate2(certFile, certPassword); 
     var keyPair = DotNetUtils.GetKeyPair(cert.PrivateKey).Private; 
     BcX509.X509Certificate bcCert = DotNetUtils.FromX509Certificate(cert); 
     var chain = new List<BcX509.X509Certificate> { bcCert }; 
     IExternalSignature signature = new PrivateKeySignature(keyPair, "SHA-256"); 

     MakeSignature.SignDetached(signatureAppearance, signature, chain, null, null, null, 0, CryptoStandard.CMS); 

     stamper.Close();

来源

2014-05-02 18:01:41

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