PdfDigitalSignatureDetails class
PdfDigitalSignatureDetails class
Contains details for signing a PDF document with a digital signature.
Remarks
At the moment digitally signing PDF documents is only available on .NET 3.5 or higher.
To digitally sign a PDF document when it is created by Aspose.Words, set the PdfSaveOptions.digital_signature_details property to a valid PdfDigitalSignatureDetails object and then save the document in the PDF format passing the PdfSaveOptions as a parameter into the Document.save() method.
Aspose.Words creates a PKCS#7 signature over the whole PDF document and uses the “Adobe.PPKMS” filter and “adbe.pkcs7.sha1” subfilter when creating a digital signature.
Constructors
| Name | Description |
|---|---|
| PdfDigitalSignatureDetails() | Initializes an instance of this class. |
| PdfDigitalSignatureDetails(certificate_holder, reason, location, signature_date) | Initializes an instance of this class. |
Properties
| Name | Description |
|---|---|
| certificate_holder | Returns the certificate holder object that contains the certificate was used to sign the document. |
| hash_algorithm | Gets or sets the hash algorithm. |
| location | Gets or sets the location of the signing. |
| reason | Gets or sets the reason for the signing. |
| signature_date | Gets or sets the date of the signing. |
| timestamp_settings | Gets or sets the digital signature timestamp settings. |
Examples
Shows how to sign a generated PDF document.
doc = aw.Document()
builder = aw.DocumentBuilder(doc)
builder.writeln('Contents of signed PDF.')
certificate_holder = aw.digitalsignatures.CertificateHolder.create(MY_DIR + 'morzal.pfx', 'aw')
# Create a "PdfSaveOptions" object that we can pass to the document's "save" method
# to modify how that method converts the document to .PDF.
options = aw.saving.PdfSaveOptions()
# Configure the "digital_signature_details" object of the "SaveOptions" object to
# digitally sign the document as we render it with the "save" method.
signing_time = datetime.datetime.now()
import aspose.words.saving as aws
options.digital_signature_details = aw.saving.PdfDigitalSignatureDetails(certificate_holder, 'Test Signing', 'My Office', signing_time)
options.digital_signature_details.hash_algorithm = aw.saving.PdfDigitalSignatureHashAlgorithm.RIPE_MD160
self.assertEqual('Test Signing', options.digital_signature_details.reason)
self.assertEqual('My Office', options.digital_signature_details.location)
self.assertEqual(signing_time.astimezone(timezone.utc), options.digital_signature_details.signature_date)
doc.save(ARTIFACTS_DIR + 'PdfSaveOptions.pdf_digital_signature.pdf', options)
See Also
- module aspose.words.saving
- property PdfSaveOptions.digital_signature_details