使用 Python API 的自动数字签名

增强数字文档签名的工作流程。开发基于 Python 的自动化系统，通过 .NET 使用 Aspose.Total for Python 对 PDF、Office 文档和图像使用不同类型的签名。

数字签名广泛应用于各个领域，包括网络安全、电子商务、法律文件等。 Aspose.Total for Python via .NET 提供了一组 API，用于处理各种类型文档（包括 PDF、Word、Excel 等）中的数字签名。这些 API 使得以编程方式对文档进行数字签名变得更加容易。

添加数字签名的通用步骤。

	import aspose.pdf as pdf
	import aspose.pydrawing as drawing

	# Set the source directory path
	filePath = "C://Words//"

	# Load the license in your application to crop the PDF
	pdfCropLicense = pdf.License()
	pdfCropLicense.set_license(filePath + "Conholdate.Total.Product.Family.lic")

	#Load the PDF file to crop
	pdfDoc = pdf.Document(filePath + "GeneratedPdf.pdf")

	#Instantiate the PdfFileSignature for the loaded PDF document
	signature = pdf.facades.PdfFileSignature(pdfDoc)

	#Load the certificate file along with the password
	pkcs = pdf.forms.PKCS7(filePath + "sample.pfx", "123456789")

	#Assign the access permissions
	docMdpSignature = pdf.forms.DocMDPSignature(pkcs, pdf.forms.DocMDPAccessPermissions.FILLING_IN_FORMS)

	#Set the rectangle for the signature placement
	rect = drawing.Rectangle(150, 650, 450, 150)

	#Set signature appearance
	signature.signature_appearance = "sample.jpg"

	#Sign the PDF file with the certify method
	signature.certify(1, "Signature Insert Reason", "Contact", "Location", True, rect, docMdpSignature)

	#Save digitally signed PDF file
	signature.save("Digitally Signed PDF.pdf")

人们可以免费使用电子签名在线签署文件。集成在线应用程序