Digital Signatures and editing signed documents

Situation - A medical office wants to digitally sign a document after it has been edited (to make it a legal order) but have the form remain unlocked so it can be edited again. They want to be able to accomplish this on a single instance of the form without using the server solution just a form designed in LiveCycle with Javascript powering the transactions. Is this possible?

You can edit a signed PDF document (assuming you are not using the field collection feature). This will not "Invalidate" the signature, but it will change the status of the signature.
I have attached two screen shots to illustrate... To generate these, I signed a PDF, changed some data and re-validated the signature.
ValidationStatus.gif shows the status of the actual signature.
DocStatus.gif shows a "roll-up" status (meaning it checks all signatures on a doc and displays an overview) of the signed document.
Regards
Steve

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Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
Digital Signatures and Document Encryption api
so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

Java SSF for Digital Signatures and Document Encryption

Hello,
I have read in "SAP Help - Java Development Manual" that there is a Java SSF library for Digital Signatures and Document Encryption API.
http://help.sap.com/saphelp_nw04s/helpdata/en/4f/65c3b32107964996a56e4165077e24/frameset.htm
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Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
Digital Signatures and Document Encryption api
so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

Digital Signatures and Document Encryption api

Hello Expert,
From which SAP NETWEAVER 7.0 SPS Digital Signatures and Document Encryption api is supported ?
I found Javadocs for SAP NetWeaver 04 SPS15.Is this api supported from SPS 15 or prior to SPS 15 also?
Regards,
Kubra Fatima.

Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
Digital Signatures and Document Encryption api
so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

Digital Signatures and Security Policies

Is there a way to combine a digital signature and a Security Policy. We have a need to digitally sign a document, but not allow that signature to be removed and to not allow any further editing of the document?

Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
Digital Signatures and Document Encryption api
so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

Digital signatures for customer facing documents

Hello,
I am a pretty experienced user of Adobe TechComm Suite (FrameMaker, RoboHelp), but I've never needed to dig too deep into Acrobat, so I am a newbie when it comes to setting up digital signatures.
I am using Acrobat Pro XI on Windows 7 professional, and the people who need to approve documents only have the free Adobe Reader. I don't have access to any sort of workflow system at the moment, and we aren't using a content management system. Adobe EchoSign is not suitable for our documents because of size restrictions and because 3rd-party cloud storage violates corporate policy.
What I'd like to be able to do is this:
Include a signatures page when I create a PDF of a document. Place the document at a shared network location (Windows network).
Notify approvers (Outllok email) that they need to digitally sign a PDF at a shared network location.
See the digital signatures and see that they all are valid.
Send out the signed PDF to external customers, in a way that it doesn't show customers that the document includes a form, and doesn't ask for more signatures, but does confirm that the PDF has not been changed since it was signed. Customers must be able to print all or part of the PDF if they want to.
I have a feeling that I may be missing some steps or some external components. Any advice on how to set this up would be welcome.
Thanks very much,
David

What you want to do can be done with Acrobat, but it depends a bit on how many internal users will be needing to sign the documents. For Reader users (desktop versions on Windows and Mac) to digitally sign a document, it needs to be Reader-enabled with either Acrobat Pro (not Standard) or LiveCycle Reader Extensions. The latter is expensive server-based software.
A signature field can be set up so that the document is locked to further changes once it is signed, but this involves the user selecting the option or you can pre-configure the document (signature field, specifically) with a bit of JavaScript so it will always be locked after signing.
The external users will be able to validate the signature (with Acrobat/Reader) and print if you haven't restricted printing.

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:
Is it possible to maintain digital signatures when inserting signed PDFs into another PDF?
Is it possible to remove a digital signature after a signature has been deleted from the page?
Is it possible to change the format of the date and time on a digital signature?

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.
Obviously it gets a lot more complext then this. The signature can be selectively applied so that the certain types of changes are allowed. A signature does not add real protection to a PDF, but Acrobat plays along with this scheme by trying to not allow changes that would invalidate the signature, and logging all modifications to the PDF.
1) There are ways to maintain the visual appearance of the signature on the page. If the permissions have been set to allow it the PDF can be flattened, which also partially removes much of the stuff that's going on internally. But this isn't always possible. I had to solve this problem once for a client, so I wrote a plug-in that strips the signature permissions from the PDF (I'll post this to www.pdfscripting.com sometime soon), after which the the PDF can be flattened, keeping the appearance. But of course, after this point the document has to be considered invalid. For example, if the document was a contract, the flattened version would be good for use in an analysis of say all contracts for a particular year, or for copying legal language to another contract, but it couldn't be used as the basis of a legal dispute.
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)

Digital Signatures and APEX

Has anyone had any success implimenting digital signatures (PKI) within APEX?
Here is a brief synapsis of what we are looking to accomplish and realize that third-party hardware/software might be necessary. We require users to login using LDAP credentials. We want them to be able to generate documents (i.e. PDF, Word, or Excel) from our application data. We want the users to have the ability to Digitally Sign their documents. We will be issuing individual private keys & certificates and we are considering generating the documents as XML. We are still in requirements gathering, but wanted to explore any and all capabilities within APEX.
Any thoughts? Thanks.

Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
Digital Signatures and Document Encryption api
so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

Securing Digital Signatures and none of that other stuff

Hello. I am new to getting help from highly knowledgeable people in this type of forum. This will be my second question asked. The first time response was quick, correct, and succinct. I am grateful for your help and I thank you. I will need to find out how to close out the thread I initiated wit the first question. Now my second question will allow me to cut to the chase, (provided I learned correctly what my mentors told me when responding to my first question). Here it is: I want to lock my digital signature to a PDF document without the use of a third party CA or without becoming a do it yourself CA. From my perspective it would seem that these programs or services are far more that I need. I simply need to secure, lock don my digital signature of PDF document that I send out to government agencies. It’s a one way trip. Copies of the documents are provided to members of my association, again a one way trip. I need to have my digital signature integrated into the text of the document and secure as well as the PDF document itself. That is all I want to do; no tracking, no secured return digital signatures, etc. I prefer to by a add in or an easy to use software program, but if I absolutely have to, I can work with the “cloud”. Can anybody point me in the right direction? Eally need help.
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There are many different types of digital signatures. I use digital signatures that are self-signed. They cannot be verified by the people that receive them, but guarentee the documents haven't been changed since signed.
This article might help: http://help.adobe.com/en_US/acrobat/X/standard/using/WS11dd809af63f0e1e-43e0464b12b4384d3b 6-8000.html
As to your previous thread. We do not close threads usually as other people with similar issues may want to post or read the thread. You can go and mark the thread as solved.

Digital signatures and wet ink signatures

HI all,
I am in the process of converting our paper checklists into fillable pdf forms. Everything is working well, but Im trying to get my head around digital signatures.
Ideally I just want to click the signature part, choose a user from a list, enter the password and the 'wet ink' signature that is scanned in gets added to the form.
So on my laptop I setup a new appearance for my signature, scanned my signature and added it to my digital signature. Perfect.
Problem is, I want to be able to use this on other computers. I copied the digital signature .pfx file and imported it on that new computer, which worked, but it drops the 'wet ink' signature and appearance.
It also appears that anyone can create a digital ID on my laptop and choose my wet ink signature appearance, and sign the document which makes it appear as if I have signed it. I was hoping the wet ink signature was locked with the digital signature but it appears this isnt the case.
Im trying to find the best way to store our signatures (we are all on a network), so that any user can use any computer and ideally lock the wet ink signature to the digital signature.
Many thanks
Chris

It doesn't work for everyone, but if you are considering moving to the world of digital signatures, it's best to forget the signature appearance ("wet"). This is just a distraction to the actual signature, and it encourages a deeply flawed workflow: one where people look at the picture on the page rather than learning about digital signatures and how to verify them. Since digital signatures are (if done properly) unfakeable and (in some places) legally recognised, it is best to completely change workflow, rather than trying to give the illusion it is just an electronic version of a paper workflow.

Digital Signatures and Certificate Authorities

My users are wanting a way to sign PDF documents, and have them verified for internal and external receipients. We are currently using Acrobat 9 Standard. I know you can create signatures and 'self-sign' them, but those are only trusted if the receipient manually adds them to their 'Trusted' people.
From my reading, it looks like we need to purchase a third party code signing certificate, such as the following: http://www.verisign.com/code-signing/
My question is, what do we need to do to make that certificate availbable to my users to use for their signatures? I'm having a hard time finding documentation on this part.

Here's a good starting point for understanding how CDS and AATL work with Acrobat and Reader: http://learn.adobe.com/wiki/display/security/Digital+Signatures+101
Another option you should look into is Adobe EchoSign: http://blogs.adobe.com/acrobat/tag/echosign

Digital Signatures and Coldfusion

I want to add a digital signature field (3 to be exact) to a PDF file that I
generate via coldfusion (via the cfdocument tag), OR use a form built in livecycle that once it is signed by the first person, the only allowable changes to the form are the second and third digital signature.
Any help would be appreciated as digital signatures are not handled in cfdocument as well (at all) as I had hoped.
Thanks,
Drew

Hello Francesco,
I want to generate a digital signature (PKCS#7,XML) using SAP SSF API as explained in
http://help.sap.com/saphelp_nw04/helpdata/en/4f/65c3b32107964996a56e4165077e24/content.htm and in Amol Joshi's reply in
Digital Signatures and Document Encryption api
so my question is From which PI/XI version and its SPS this SAP SSF LIBRARY is supported ?
Kind Regards,
Kubra fatima.

Question from worse than Newbie about digital signatures and Adobe Reader.

1st, thanks for taking the time to even look. 2nd, We are trying to use digital signature pads with PDF documents created by Documaker 11.4. In Adobe Pro there is a setting "Extend features in Adobe Reader" that will allow users with Adobe Reader to sign the PDF documents, however our "guy" creating the forms cannot find anything like this in Documaker. I've never used Documaker before and dont have a copy to even play with, but I was hoping there was a simple "go here, click this" answer.
Any and all help is greatly appreciated.
Thanks for you time,
Jeff Holt

I'm not expert on Documaker, but I'm close to them and will try to find an answer if I can be sure of the question.
Documaker is capable of creating PDF signature markers in the output PDF. Those markers are compatible with tools like Acrobat which can sign the documents. Is your question about how to create the markers or are you doing that and finding that Acrobat Reader will not allow you to sign them?
I'd have to research Adobe's licensing for Acrobat and Reader to see if that was the issue. I know certain features in Acrobat Reader are locked down by Adobe so you have to have another product license from them to enable the feature. If that is the problem, then I'm pretty sure that Documaker has no mechanism to provide a license token to specifically enable the Acrobat Reader product.
If you can provide more specifics, I'll try to follow up. You may also contact Customer Support, if you haven't already and open a case there requesting a specific question be answered.
Best Regards.

How to use Digital Signature and PKI in SharePoint Server 2013

Dear Expert,
My company will plan to use Digital Signature and PKI document in SharEPoint Server 2013.
Can you guide me what's the concept and how to implement and develop?
Please suggestion.
BR,

Hi BR,
Based on your description, my understanding is that you want to use Digital Signature and PKI in SharePoint Server 2013.
You can use digital signatures in forms ,then use these forms in you SharePoint site.
In InfoPath form ,you can change the form to allow signature here: File>Info>Advanced form options >Digital Signatures .You can choose to sign the whole form or a field .
https://social.technet.microsoft.com/Forums/en-US/0ed54d57-d67d-41cd-bd1b-9e5a4be10d0c/use-of-digital-signature-in-sharepoint-2010?forum=sharepointcustomizationprevious
Or you can use any tools such as the ADSS Connector for SharePoint which allows enterprise users to "click and sign" on a document in SharePoint.
http://www.ascertia.com/
Thanks,
Victoria
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
[email protected]
Victoria Xia
TechNet Community Support

Message level security: difference digital signature and certificate

Hi everybody,
could anybody please explain the difference between <b>digital signature</b> and <b>certificate</b>?
Thans
Regards Mario

Mario,
A digital signature is an electronic signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and possibly to ensure that the original content of the message or document that has been sent is unchanged. Digital signatures are easily transportable, cannot be imitated by someone else, and can be automatically time-stamped. The ability to ensure that the original signed message arrived means that the sender cannot easily repudiate it later.
A digital signature can be used with any kind of message, whether it is encrypted or not, simply so that the receiver can be sure of the sender's identity and that the message arrived intact. A digital certificate contains the digital signature of the certificate-issuing authority so that anyone can verify that the certificate is real.
where as
A digital certificate is an electronic "credit card" that establishes your credentials when doing business or other transactions on the Web. It is issued by a certification authority (CA). It contains your name, a serial number, expiration dates, a copy of the certificate holder's public key (used for encrypting messages and digital signatures), and the digital signature of the certificate-issuing authority so that a recipient can verify that the certificate is real. Some digital certificates conform to a standard, X.509. Digital certificates can be kept in registries so that authenticating users can look up other users' public keys.
hope it helps u.
--Archana

Digital Signatures and editing signed documents

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