Opts = VerificationOptions (VerificationOptions. append ( "././LicenseKey/PYTHON" ) from LicenseKey import * def VerifySimple (in_docpath, in_public_key_file_path ) :ĭoc = PDFDoc (in_docpath ) print ( "=" ) addsitedir ( "./././PDFNetC/Lib" ) import sys #HOW TO CREATE A DIGITAL SIGNATURE FILE PDF## Although the steps above describes extending the SignatureHandler class, this sample demonstrates the use of # StdSignatureHandler (a built-in SignatureHandler in PDFNet) to sign a PDF file. This can be used to # add additional information to the signature dictionary (e.g. For example, UseSignatureHandler() returns an instance # of SDF dictionary which represents the signature dictionary (or the /V entry of the form field). # Additional processing can be done before document is signed. # IMPORTANT: If there are already signed/certified digital signature(s) in the document, you must save incrementally # so as to not invalidate the other signature(s). This will also create the digital signature dictionary and write a cryptographic signature to it. # NOTE: It is only possible to sign/certify one signature per call to the Save function. # iii)Ĝall SignOnNextSaveWithCustomHandler/CertifyOnNextSaveWithCustomHandler with the SignatureHandlerId. ![]() # ii) Create an instance of the implemented SignatureHandler and register it with PDFDoc with # pdfdoc.AddSignatureHandler(). The SignatureHandler will be used to add or # validate/check a digital signature. This overload is to be used # in the following fashion: # i) Extend and implement a new SignatureHandler. Taking a unique identifier of a signature handler registered with the PDFDoc. ![]() #HOW TO CREATE A DIGITAL SIGNATURE FILE PASSWORD#Taking a buffer containing a PKCS #12 private keyfile and its password # c. Taking a PKCS #12 keyfile path and its password # b. There are three overloads for each one (six total): # a. Call either CertifyOnNextSave or SignOnNextSave. # If you want it to be visible, provide a Rect argument with a non-zero width or height, and don't set the # NoView and Hidden flags. #Ē.Ĝreate a signature widget annotation, and pass the DigitalSignatureField that you just created or found. # -OR- # (b) If you didn't just create the digital signature field that you want to sign/certify, find the existing one within the # document by using PDFDoc.DigitalSignatureFieldIterator or by using PDFDoc.GetField to get it by its fully qualified name. #đ.ĞITHER: # (a) Call doc.CreateDigitalSignatureField, optionally providing a name. Start with a PDF with or without form fields in it that one would like to lock (or, one can add a field, see (1)). # The following steps reflect typical intended usage of the digital signatures API: #Đ. ![]() #- #- # This sample demonstrates the basic usage of the high-level digital signatures API in PDFNet. # Consult LICENSE.txt regarding license information. #!/usr/bin/python #- # Copyright (c) 2001-2021 by PDFTron Systems Inc.
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