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Questions tagged [pades]

PAdES (PDF Advanced Electronic Signatures) is a standard for enabling digital signature and (eventually) court validity of digitally signed documents in PDF format

51 questions
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Pades Signature with multiple DSS Dictionaries

I'm working on a PDF Signer/Validator and don't know how I should handle pdf files with multiple signatures and dss dictionaries. Here is the scenario: A pdf file is signed twice, and after the second signature, a DSS dictionary is added with the…
Diego Azevedo
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Signing PDF with DSS using PAdES-LT level

I'm using DSS library to sign a PDF using PAdES-LT level. I have tried level B and T and they have worked fine. I had issues with LT level in the beginning because it was only validated as T using the online validator so I tried to find an issue…
krillov
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pdfbox - document getting corrupted after adding signed attributes

I am trying to digitally sign document using pdfbox. I am using filter as FILTER_ADOBE_PPKLITE and subfilter as SUBFILTER_ETSI_CADES_DETACHED. For ETSI_CADES_Detached, a signing attribute is needs to be added. I am fetching signed hash and …
Tanmay Sharma
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Signature level(PAdES-B/T/LT/LTA) using PDFBox?

Is there any way I can display the signature level(PAdES B/T/LT/LTA) using PDFBox? I checked the ShowSignature.java class, but I didn't find anything like that.
3de
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PAdES Signature Level - Adobe Acrobat

I am creating a PADES signature using pdfbox 3.0.0 RC, my code works using the example to create the digital signature. However, I am unable to see the signature level in Adobe Acrobat when I open the document with this tool although it is able to…
rdc
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Getting 'Object label badly formatted' when trying to create PDF visible signature

I'm trying to create a visible PDF signature pragmatically. Non-visible signature works but when I add the AP (appearance) object I get an error in Acrobat Reader saying the following: 'Object label badly formatted'. The relevant XObject that I make…
user3362334
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Does IText support PAdES signature commitment type?

I have a working software, using IText, that signs documents with all the PAdES profiles, but I need to add the Commitment Type field, how do I do it? It is kinda the same as the signature Reason, but in the PAdES structure.
nunocv
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Creating PAdES signature

I am trying to create a PAdES signature using the following workflow: PDF is prepared for signing and hash is calculated in the browser hash is sent to the backend detached CAdES signature is formed on the backend detached CAdES is sent back to the…
user3362334
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adding digital signature to PDF with visible timestamp and Reason field using ESIG/DSS

I am trying to understand and implement a solution based on European Commission-sponsored Digital Signature Service project. I currently have succeeded in using the abstraction provided by the DSS-DEMO application, mentioned in the aforementioned…
hello_earth
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iText5.x Setting pushbutton appearance without breaking Seal

Here is the context: We add two empty pages to an existing pdf, each containing an empty pushbutton field We apply a PAdES B-B seal with all modification rights on the document We modify a pushbutton to insert an image in it When we try to…
Bro
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How to check 'PDF Digital Signature' whether it is 'PAdES' standard or not?

How can we check whether our Digital Signature on PDF is according to 'PAdES' standard?
Pearapon Joe
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Validation on PDF-A file

I'm trying to implement a java pdf-a validator using PdfBox. The file I'm dealing with is a digital signed pdf (PADES). Either I use pdfbox or an online tool the result is: PreflightDocument document = parser.getPreflightDocument(); …
paul_333
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PDFbox how to create a PADES-LTV sample

I'm using PDFBox 2.0 I would like to create a PDF with PADES-LTV format but not me steps to do so. My question is on the part of the LTV parameters and when applied. Need to know at what point are added and how I put part of my code if you can…
Leuqarut
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What are the steps needs to be performed while digitally signing document using PAdES?

I know the while digitally signing document using PKCS#7 as standard, we need to append certificate information and signed hash into the document. But if I want to use PAdES as the standard for digitally signing then what all instruction needs to be…
user12634860
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PDF file internal versioning

I have already signed PDF file with qualified certs in PADES format. I need add stamp, annotation, new layer to this PDF document. The signature became broken. My question is how to add stamp, annotation or new layer to this PDF document without…
Michał Lipok
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