Digital Signature & Encryption for PDF

Irrelevant Links. Please provide answer specific to question asked.
Edited by: Bhavesh Kantilal on Feb 27, 2009 3:56 AM

Hi,
If the pdf documents have already been taken care by ABAP then let abap only take care of digitally signing it. Because i once a had a requirement of having to generate pdf as an output of XI and that involved ADS configuration and installation of sap self extractor for MFC application.Big headache...
Digital signing and encryption of files from ABAP
http://help.sap.com/saphelp_erp2004/helpdata/en/53/251a355d0c4d78e10000009b38f83b/frameset.htm
Rgds
joel

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How to go about Digital Signature/Encryption for Purchase Orders

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We would like to send the Purchase Orders through E-Mail to suppliers in SAP. As per our legal department recommendations, we must implement the digital signature/Encryption mechanism in SAP prior to send the PO's through email.
I have no knowledge about available features, configuration requirements in SAP and required decryption machanism from Supplier side.
Appreciate, if you could share your expertise on the above requirements.
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SAP : 4.7 (MySAP ERP)
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Guess these documents will be very helpfull..
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/55ba9790-0201-0010-aa98-ce8f51ea93cd
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/7f52fd28-0b01-0010-afb0-cc70884fa369
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/a09f3d8e-d478-2910-9eb8-caa6516dd7d9
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/1c51c590-0201-0010-ffbc-b2bef1c57385
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Save metadata per digital signature field in PDF?

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I'm looking for a way to save metadata per digital signature field in a PDF.
For example for each signature I would like to save additional string property.
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Thanks in Advance!

Hi,
Yes, we have options to add digital signature to the pdf. We have one attribute called "Permissions" in "cfpdf" tag. If we provide permissions = 'AllowSecure', then system would allow digital signature for that pdf.
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Yes , all this will need is configuration on UCM to be able to know which ones of the signatures need to be attached with which set of contents and likewise .
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Click for digital signature without Save PDF?

Previous versions of interactive/fillable PDFs didn't require the document to be saved once the user clicked to digitally sign. We've rendered some new PDFs with Acrobat X Pro that have a digital signature and it is requiring the user to save the file. This poses a challenge because some of these PDFs may be used on a tablet or iPad by a sales representative that is trying to collect a signature but needs to continue filling out the form beyond what the purchaser of services/products is agreeing to above that signature. There will also be other signature areas throughout the document. We are looking to simply add the signature stamp and continue to add fillable content and additional signature stamps throughout the document until it is complete to be saved.
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I recommend that you use stamps, not signature fields. They are not the same thing.
You can add as many stamps to a document as you wish, without having to save along the way, but signatures are meant to be applied at the end, after the form is completed.
You can even design your own stamps and make them dynamic, meaning they add things like the user name and current date, etc.
Have a look at: http://www.pdfscripting.com/public/department53.cfm

Maintaining digital signatures in single pdf

Is there a way in Acrobat 9 Pro to maintain digital signatures when combining multiple files into a single pdf? For instance, if I sign my timecard and a separate expense report, then my supervisor also countersigns both documents, I lose the signatures when combining the timecard and expense report into a single file. I believe the signatures are maintained when creating a portfolio, but can it also be accomplished in a single pdf?

I tried combining mulitple pdf documents either signed by me and/or a customer into one pdf document and the signatures were lost. However, if you combine them as a 'PDF Portfolio' instead of 'Single PDF' you'll maintain the signatures. The option is located in the right corner of the 'Combine Files' screen.

Multiple digital signatures in a pdf form?

I'm creating an adobe pdf form that requires multiple approvers (one after the other) to digitally sign the form. However, once the second person digitally signs the form, the first person's signature will become invalid because the addition of the second signature is not signed by the first person.
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Hi,
I doubt that the addition of a second signature actually invalidates (the red X icon) the first signature, but rather it shows the signature as Valid with Changes (the pen & yellow triangle icon). Technically, that is the correct signature status, but because it caused so much confusion, beginning with version 9, we've changed the user interface and stopped indicating changes to the PDF if the only change is a subsequent signature.
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Digital signatures and combining PDFs in Acrobat X

I hope that one of you Acrobat gurus can help me out with one or more of these questions:
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Is it possible to remove a digital signature after a signature has been deleted from the page?
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In the simplest sense a digital signature is a special checksum of all the bytes in the bytes in the PDF combined with all the bytes in the digital signature. If the document is changed in any way the checksum changes, so the signature becomes invalid. A valid signature ensures that the document hasn't changed since the signature was applied. That stuff that's shown on the signature field is irrelevant. It's just a pretty picture. The real stuff is going on inside the PDF where you can't see it.
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2) I don't understand this one. Do you mean you're deleting the signature field and some of the internal digital signature stuff is still hanging around causing problems? If you own the signature (or the permissions allow), then a standard form reset will "Un-Sign" the PDF. Inserting PDF pages into another PDF will strip out all this info as well.
3) The stamp appearance is set at the time the stamp is applied, it cannot be changed after this point. It's a lot like a PDF stamp.
Thom Parker
The source for PDF Scripting Info
pdfscripting.com
The Acrobat JavaScript Reference, Use it Early and Often
http://www.adobe.com/devnet/acrobat/javascript.html
Then most important JavaScript Development tool in Acrobat
The Console Window (Video tutorial)
The Console Window(article)

Using Digital Signatures in a PDF File | Acrobat X | Adobe TV

This video details how to use the new Sign & Certify panel for digital signatures, including the new Time Stamp Document tool, in Acrobat X Std. and Pro.
http://adobe.ly/yDHBdn

I wanted to add a scanned pdf signature to a W-9 form, and I changed the preference in Security as you suggested, but the new icon in the top tool bar is grayed out, as are all the choices within the Sign & Certify drop down. I watched movies, and looked at forums, and no one has this grayed-out issue. I have been trying to figure this out for an hour, and everything I find is a dead end.

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I am developing an an application in WebDynpro Java.
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I use Adobe Reader XI.
I have a PDF file configured with a set of fields to be filled in.
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Everyting is working fine: I can fill the fields and sign the document with my ID card, as you can see below :
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That requirement is very important since we will deploy the solution to more than 5000 users in an environment which is integrated with other tools, and for the whole stuff to work, the users can't change the file name nor file path... In that scenario, you will understand that proposing a "Save As" by default is not the good way to go.
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Thanks already
Benoît

Never mind, I found the answer.
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Hi,
I've never done this before and wonder if it will work.
I'm using Acrobat 9 pro extended. I'm creating and sending a Copyright Agreement pdf file that has to be signed by me and the client. Using the form editing mode I can put digital signature fields. Then back in regular editing mode when I click on a field, it brings the Sign Document dialog with my name already selected and choosing Sign puts my digital signature. I can't remember what I've done previously for my name to be available but I remember signing digitally pdf documents in the past. I don't know if my client has previously signed PDFs but I would like this to be as smooth as possible and assuming the worst case scenario, I wonder if they will be able to sign it, what eventual troubles they may have, and what instructions should I give them along with the pdf?
I will greatly appreciate your help

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If this is going to be my client experience, I'm afraid that my client may not have nether the patience nor the time to figure out how to sign the contract. I hope that I have missed something obvious that makes signing really quick and effortless.
Your input will be greatly appreciated.
This is a link to the empty pdf file with only a signature field. Can anyone sign this document?
https://dl.dropboxusercontent.com/u/40428991/CanYouSignThis.pdf

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For reference, I've been actively searching the internet for days for an answer - unfortunately, I've only found 3rd party programs referenced. Which I could have been more help.

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You can write a plug-in (C/C++).

Digital Signature & Encryption for PDF

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