PdfDigitalSignatureTimestampSettings

PdfDigitalSignatureTimestampSettings class

Contains settings of the digital signature timestamp.

To learn more, visit the Work with Digital Signatures documentation article.

public class PdfDigitalSignatureTimestampSettings

Constructors

NameDescription
PdfDigitalSignatureTimestampSettings()Initializes an instance of this class.
PdfDigitalSignatureTimestampSettings(string, string, string)Initializes an instance of this class.
PdfDigitalSignatureTimestampSettings(string, string, string, TimeSpan)Initializes an instance of this class.

Properties

NameDescription
Password { get; set; }Timestamp server password.
ServerUrl { get; set; }Timestamp server URL.
Timeout { get; set; }Time-out value for accessing timestamp server.
UserName { get; set; }Timestamp server user name.

Examples

Shows how to sign a saved PDF document digitally and timestamp it.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
builder.Writeln("Signed PDF contents.");

// Create a "PdfSaveOptions" object that we can pass to the document's "Save" method
// to modify how that method converts the document to .PDF.
PdfSaveOptions options = new PdfSaveOptions();

// Create a digital signature and assign it to our SaveOptions object to sign the document when we save it to PDF.
CertificateHolder certificateHolder = CertificateHolder.Create(MyDir + "morzal.pfx", "aw");
options.DigitalSignatureDetails = new PdfDigitalSignatureDetails(certificateHolder, "Test Signing", "Aspose Office", DateTime.Now);

// Create a timestamp authority-verified timestamp.
options.DigitalSignatureDetails.TimestampSettings =
    new PdfDigitalSignatureTimestampSettings("https://freetsa.org/tsr", "JohnDoe", "MyPassword");

// The default lifespan of the timestamp is 100 seconds.
Assert.AreEqual(100.0d, options.DigitalSignatureDetails.TimestampSettings.Timeout.TotalSeconds);

// We can set our timeout period via the constructor.
options.DigitalSignatureDetails.TimestampSettings =
    new PdfDigitalSignatureTimestampSettings("https://freetsa.org/tsr", "JohnDoe", "MyPassword", TimeSpan.FromMinutes(30));

Assert.AreEqual(1800.0d, options.DigitalSignatureDetails.TimestampSettings.Timeout.TotalSeconds);
Assert.AreEqual("https://freetsa.org/tsr", options.DigitalSignatureDetails.TimestampSettings.ServerUrl);
Assert.AreEqual("JohnDoe", options.DigitalSignatureDetails.TimestampSettings.UserName);
Assert.AreEqual("MyPassword", options.DigitalSignatureDetails.TimestampSettings.Password);

// The "Save" method will apply our signature to the output document at this time.
doc.Save(ArtifactsDir + "PdfSaveOptions.PdfDigitalSignatureTimestamp.pdf", options);

See Also

PdfDigitalSignatureHashAlgorithm Enum PdfEncryptionDetails Class