HashAlgorithm

PdfDigitalSignatureDetails.HashAlgorithm property

Ottiene o imposta l’algoritmo hash.

public PdfDigitalSignatureHashAlgorithm HashAlgorithm { get; set; }

Osservazioni

Il valore predefinito è l’algoritmo SHA-256.

Esempi

Mostra come firmare un documento PDF generato.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
builder.Writeln("Contents of signed PDF.");

CertificateHolder certificateHolder = CertificateHolder.Create(MyDir + "morzal.pfx", "aw");

// Crea un oggetto "PdfSaveOptions" che possiamo passare al metodo "Save" del documento
// per modificare il modo in cui il metodo converte il documento in .PDF.
PdfSaveOptions options = new PdfSaveOptions();

// Configura l'oggetto "DigitalSignatureDetails" dell'oggetto "SaveOptions" su
// firma digitalmente il documento mentre lo rendiamo con il metodo "Salva".
DateTime signingTime = new DateTime(2015, 7, 20);
options.DigitalSignatureDetails =
    new PdfDigitalSignatureDetails(certificateHolder, "Test Signing", "My Office", signingTime);
options.DigitalSignatureDetails.HashAlgorithm = PdfDigitalSignatureHashAlgorithm.RipeMD160;

Assert.AreEqual("Test Signing", options.DigitalSignatureDetails.Reason);
Assert.AreEqual("My Office", options.DigitalSignatureDetails.Location);
Assert.AreEqual(signingTime, options.DigitalSignatureDetails.SignatureDate.ToLocalTime());

doc.Save(ArtifactsDir + "PdfSaveOptions.PdfDigitalSignature.pdf", options);

Guarda anche

PdfDigitalSignatureDetails.CertificateHolder PdfDigitalSignatureDetails.Location