Digital Signature(s) Do I need Reader 10?

Hello all, we have Adobe Reader X here and I am having a problem regarding the digital signature that I think I'm creating, but nothing appears to be working for me. I don't think I'm missing a step (I've been viewing the instructions and just think Reader X is not the way).
So the real question is... is having Reader X hindering my digital signature escapades or am I really that dumb?
Thanks to all.

You don't "need" anything, but OS X 10.9 "Mavericks" incorporates significant performance improvements over earlier versions.
I don't want to use the GBs on my laptop.
I'm not sure what you mean by that. You will need a minimum of 8 GB free hard disk space to install it, but if you are concerned about that then you have bigger problems to address. After its installation is finished Mavericks will result in a negligible overall change to HD usage, including the amount of free space remaining.

Similar Messages

Digital signatures with different versions of Reader

I have created a form which requires a digital signature for approval. Typically, an employee will complete the form in Reader and forward it to a supervisor for approval. The supervisor needs to sign it digitally and forward it to me.
The issue we are having is with those employees who are completing the form in Reader and the supervisor (or someone thereafter) has a more updated version of Reader and cannot sign the document. What can we do to stop this from happening? There is no practical way to keep everyone on the same version of Reader. We will have many more forms which require a signature, and we need this issue resolved. (I am using Adobe Acrobat 9 Pro to create the forms.)
Also, is there a way to verify the digital signature without using a third-party source? At this point, we know anyone can create a digital signature using someone's hand-written signature they found on another paper and we would like to prevent this from happening. We need to validate the person who used the digital signature is really that person.
Any help is appreciated! Thank you!

If you are creating your forms in Acrobat 9 Pro. and then Reader-enabling them for digital signatures, then recipients of the form will need to use at least version 8 of the Adobe Reader. Also, you'll need to do a few things during the authoring stage of your form, if your form changes by role (i.e., additional data is entered, annotations, or multiple signatures). Mainly you'll need to use a certification sig. for the first signature and set permitted changes after certifying.
You can find a lot more detail on best practices on developing forms for multiple signatures in the Digital Signature User Guide at:
http://www.adobe.com/devnet/acrobat/pdfs/acrobat_digsig_userguide_90.pdf
The guide also explains how to validate documents (authenticity validation and document integrity validation).

Digital signature will not work in Reader

I need help I have been working on a new form I want to have digatally signed. I add the digital signature box, in the test pdf it pulls in my digital certificates and works. Once I save the form and try opening it with adobe reader 9 nothing happens when I click the signature block. On the other hand when it is opened in adobe pro the signatures work. I am saving the file as static and tried several combinations of options and nothing seems to work. Can anybody give me some easy to follow instructions? I am using version 8. I appreciate any help.

I am having the same problem with signatures. I am including a form in a pdf portfolio to collect signatures from different users who have Reader. I make sure that features have been extended for reader. Most of the time they are okay. But every once in a while (at least one every two weeks) I get a user telling me they can't sign. No message or error of any kind, just a quick blink but no signature. As a work-around I've had to save a copy and re-extend features. This can be time consuming when there are a few documents I need to circulate. Please advise.

LC digital signature does not work in Reader

I have added a signature field in a LC form with expectations that it would work in Reader.
I can see the field but it does not work in Reader. I have opened the form in Acrobat and the signature field works.
Any ideas on resolving this?

Wasil,
Thank you for the reply.
As I do not have LC Server I used Acrobat Pro to save as reader extended which solved the issue.
Regards,
James A Hiltz CET
Quality Assurance Supervisor
Terracon Geotechnique Ltd.
Quality Quote:
“Quality begins with the intent, which is fixed by management.” — Edwards Deming

Making Multiple Digital Signatures Read-only in Form (Acrobat 9)

I have created a form which includes two (2) digital signature fields. What needs to occur with the form is Person1 fills the form and then digitally signs it thereby making the form fields read-only . Person2 then digitally signs the form which should make Person1's digital signature read-only.
Here's what I've done:
1) For the Person1 digital signature field, in Digital Signature Properties, under the Signed tab, I have selected Mark as read-only <all fields except these> and selected the Person2 digital signature field.
2) For the Person2 digital signature field, in Digital Signature Properties, under the Signed tab, I have selected Mark as read-only <all fields> since once Person2 signs the form I do not want Person1 to be able to clear the digital signature and make changes to the form.
Here's what actually occurs:
Step 1 above works fine. Once the signature is applied all the form fields are read-only except for the Person2 digital signature field.
The problem is that after Person2 digitally signs the form, even though I selected all fields as read-only, Person1 can 'clear' their signature which leaves all the form fields available for editing and leaves Person2's digital signature still on the form.
I honestly don't care about 'validating' signatures on this form since it's going to be printed but I cannot allow Person2's signature to remain on the form and allow Person1 to edit the form.
--Mike.

Hi!
I have the same problem. Have not been able to figure it out, although tried everything.
Hope somebody can help
- MackeMan

Xfa Form, Digital Signatures, file attachments and Reader 9

Hi,
In reader 8 and previous, when i wanted to have a form that could be signed, passed to the next persons, added attachement signed, repeat, while maintaining the signatures valid, i could.
Since we updated to reader 9.12 all previously signed documents appear with invalid signatures and if i try to attach a file, the add button just isn't there.
If i follow he following steps:
Server side:
- Create PDF from xdp + xml (using forms).
- Assign Form Fillin, Digital Signatures and File Attachment (using Reader Extentions)
Client side:
- Populate the Form data
- Attach files
- Certifiy
- Sign (multiple Signatures)
It works fine, but it isn't the workflow i had in previous versions.
The workflow i have here is:
Server side:
- Create PDF from xdp + xml (using forms).
- Assign Form Fillin, Digital Signatures and File Attachment (using Reader Extentions)
Client side:
- Populate the Form data
- Attach files
- add Signature (only locks a collections of form fields)
- Repeat until everyone has attached their files and signed.
The problem is that this worked fine in versions before 9 (all digital signatures here validated with the yellow exclamation mark indicating new content), but in 9 and up what i get, after validating the signatures in reader, is a information indicating that the signatures are invalid because the document is either corrupt or has been changed.
Is this a bug or has this been changed from version 8 to version 9?
I've read the changelist of reader 9 and it talks nothing about this situation or Digital Rights other than form fillin, annotations and digital signtatures (the ones we can choose in the certification wizard of Acrobat Pro).
Any idea if its possible to implement the second scenario in reader 9, or even if its possible? Is there a guide on the practices Adobe garaties will allow to validate signatures in the following years? Even if it means usings PDFA.
Thanks in advance.

One last try.
You help would really be welcome in finding out the root cause of the difference in behaviour between reader 8 and 9 in this matter (bug or change).
I have no idea what documentation to read (since i've read the launch documentation and change list documentation) about reader 9, i've contacted Adobe 3 days ago (and the answer is silence, like usuall) and have no clear thought about what to say (without taking a huge risk by giving a uninformed answer) about this issue.
Thanks.

Reading the Digital Signature No.

Hi,
I have a Digital Signature for a Lot, via QA13 I can see the digital Signature , but how can I read the data. In the Structure of the table TC71 is not a connection to the Lot.
The table TC78 is empty.
Any Ideas.
Regards Ralf Rasch

the answer is: Read with the FM SIGN_READ or directly via Table TC73
Edited by: Ralf Rasch on Jan 11, 2008 8:44 AM
Edited by: Ralf Rasch on Jan 11, 2008 8:45 AM

Checking to see if a document has a digital signature

Hello,
I have created a stand alone static PDF document using the Designer 7.0.
I have some code that checks the document to ensure the proper data fields have been filled out before the user can sign the form. After signing the form the, the user is supposed to click a submit button where 2 things happen, first the data is sent for processing (do not the the digital signature info here) and second a copy of the PDF is save for archiving purposes (with digital signature).
What I need to know is how do I verify the digital signature field is not null or empty?
If I check its raw value, before and after are the same (null or empty even thought I can see that the form has been signed by looking at the screen). If I used the signatureInfo functions available in professional, I get a security violation error. The form is filled out using Adobe Reader and the forms have digital signature right added via the Reader Extensions v6.0.
Any help is greatly appreciated.
Thanks
Ben

Hi Ben, First advice is upgrade to designer 7.1. There are major improvements in the stability of designer. 7.0 kept crashing on me constantly.
I created a little function which should help you out.
function isSigned(sigField){
var oState = event.target.getField(sigField).signatureInfo().status;
/* if (oState == -1)
//app.alert("Not a signturefield");
else if (oState == 0)
//app.alert("Signature is Blank");
else if (oState == 1)
//app.alert("Unknown Status");
else if (oState == 2)
//app.alert("Signature is invalid");
else if (oState == 3)
//app.alert("Sig of Document is valid, identity of signer could not be verified");
else if (oState == 4)
//app.alert("Sig of Document is valid, identity of signer is valid");
else
//app.alert("Value was " + oState); */
return oState;
You need to pass this function the fully qualified SOM so if the signature field is in form.subform.page1.sigField you would call it like this isSigned("form[0].subform[0].page1[0].sigField[0]").
Good luck.

Digital Signatures - preserving throughout the process

I have a form with 4 parts, each part requiring a digital signature.
I just read the article on preserving digital signatures (http://www.adobe.com/devnet/livecycle/workflow/articles/lc_wf_preserve_digisig_tip.pdf), but I am still a little confused. Does this only work if I am sending the form as an email attachment (is that what the routes and attachments mean)?
We want to do everything on-line (using pdf's)? We want part 1 user to fill out the form on-line, digital sign it, then it submit the form where it gets routed to part 2 user. So, is it possible for user 1 to type in the last name to look up user 2 and then selects user 2 - user gets an email with a URL to fill put part 2 on-line, but the digital signature from user 1 needs to be preserved. Then user 2 will digital sign the form and route to user 3.
So, the basic question was, can we do all this on-line (using PDFs) or do we have to involve email attachments? I wouldn't think so, but I wanted to clarify.
Thank you,
Jennifer

<[email protected]> ha scritto nel messaggio news:[email protected].. >I have a form with 4 parts, each part requiring a digital signature. > > I just read the article on preserving digital signatures > (http://www.adobe.com/devnet/livecycle/workflow/articles/lc_wf_preserve_digisig_tip.pdf), > but I am still a little confused. Does this only work if I am sending the > form as an email attachment (is that what the routes and attachments > mean)? > > We want to do everything on-line (using pdf's)? We want part 1 user to > fill out the form on-line, digital sign it, then it submit the form where > it gets routed to part 2 user. So, is it possible for user 1 to type in > the last name to look up user 2 and then selects user 2 - user gets an > email with a URL to fill put part 2 on-line, but the digital signature > from user 1 needs to be preserved. Then user 2 will digital sign the form > and route to user 3. > > So, the basic question was, can we do all this on-line (using PDFs) or do > we have to involve email attachments? I wouldn't think so, but I wanted to > clarify. > I think that in your specific case, also the process via email would not preserse digital signatures, because every step that required a new digsign would change the hash value. Bye, Alessio

Digital Signatures: Multiple Tasks and Signers

Hello, All-
Context: We have a repair and overhaul operation that has several technicians performing maintenance. Basic workflow: product comes in, gets the paperwork for the specific maintenance, and then travels through the facility to be broken down, serviced, rebuilt, tested, and returned to service. We would like the "paperwork" to be all electronic (which we can do with Acrobat by using PDF documents), but there are several tasks that require a technician's signature. Not a digital signature for the WHOLE document, just a task in the document.
Objective: Multiple technicians signing off on mutilple tasks, all in one document.
Questions: Can we modify the document (i.e., add/insert pages) in Acrobat after a digital signature is applied using the Reader? Do those signing off on the tasks only need the Reader to create and apply the signature files? Can multiple signature files be stored in a centralized location, since technicians use work station machines (rather than a computer issued specifically to them)?
Doing some investigation for the best solution. Sorry for the series of long questions.

> "No. However, this can't be done in Reader under any circumstances... Reader is just that, a reader of PDF files. It can't edit them in any meaningful way, like add new pages (unless a special template was set up for this purpose)."
- I should have clarified: we would like to modify the document using the full Acrobat Suite after digital signature. Signing once locks the entire document from further edits.
> "Not 100% sure about that, but I think the answer is no. Signatures have to located on the local machine."
- That's a problem: then every technician needs a digital signature on every machine. Not suitable at an enterprise/department level.
I just found an answer to the basic concept, as it was answered just yesterday (http://forums.adobe.com/thread/1338837): I can leverge the Stamp feature and create a custom stamp to act as a signature. I can still modify the document after applying the stamp.
Now the test: can others remove my stamp?
Edit: Thanks for the help, BTW. I see you edited your answer to question #1. Again, maybe the stamp feature is sufficient?

Technical and Philosophical Question re: Digital Signatures

My question is technical, but has a philosophical issue driving it.
Summary:
In Livecycle Designer ES2 (9), I would like to setup a form for digital signature that, once enabled for Reader, you can apply a digital signature without having to immediately save. I know it can be done. Example: http://www.opm.gov/forms/pdf_fill/opm71.pdf
Technical:
How is this done? Is it a setting of the signature field object?
Philosophical Underpinings:
1. I don't need the digital signature to be legally defensible, so I don't care if if the document changes after applying the signature, nor will any of the fields be locked down after signing. However, the digital signature everyone at my company uses is the legally defensible type, so using it instead of digital ink is for simplcity's sake.
2. When most people sign a paper document, they usually sign, and THEN date. The problem with Adobe et al.'s implementation of digital signatures is that you have to date, and THEN sign, or else the date field will usually be locked down after you are forced to save the document after signing. I know that a date field is not required when using digital signatures, but you need to date field in case someone decides to print the form and sign the old fashioned way.
3. Because of this conundrum, I made the date field auto-populate with the signing date by applying javascript to the signature field that populates the date field upon signing. The problem with that is that with Adobe forcing me to save the document immediately after signing, the date field does not populate because the signature applies to the version of the document that existed just prior to the signature being applied. Since the date field wants to populate after signing, it is discarded.
Hence, I want to prevent Reader from forcing me to immediately save. I am approaching this philosophical conundrum all wrong?
Signed,
Befuddled

"you can apply a digital signature without having to immediately save. I know it can be done."
Whenever a signature is applied, the form gets saved. So, you can't apply a signature without having saved the form. Do some modifications in the form you have provided, save it and validate the signature. Validation would suggest that changes have been done in the form, so signature is invalidated at this stage. This effectively means that data has been changed in the form after signing making it unreliable so to say.
Since you are moving to digital signing in the form, I do not understand exactly why there's a need to manually enter the date after signing the form digitally. Once you sign the form, date automatically comes in the signature. This solves the purpose/use case that user needs to fill in the date. Ideally, you need to remove the date field from the form.
"I know that a date field is not required when using digital signatures, but you need to date field in case someone decides to print the form and sign the old fashioned way."
If you can't remove the date field from the form and want to have a simialr experience in digital world, the option is to write a simple script in the form which checks whether the date is filled in or not. If it's not filled in, abort the signing process and provide a message asking user to fill in the date.

Web Services with Digital Signature?

Hello,
I spoke to Adobe yesterday regarding using web services to submit forms, but our forms need to have a digital signature in them. He said (not a quote, just a recap here) while technically possible, it will be difficult since we would need to deserialize the document.
So, has anyone accomplished this? Is there a QPAC out there that can already handle this?
Thank you,
Jennifer

Hello Chris,
I really am in unfamiliar ground here, so if a servlet works, then great (of course I have no clue how to do that...).
Basically we need to have a form out on a website so that people can submit this form with a digital signature. We do have Form Manager, but right now cannot use it since the Form Manager requires AD/LDAP accounts. Considering that our form is a request for a USER ACCOUNT, we are stuck :D I thought the web services may have been our answer, but then it was looking like we couldn't use it because of our digital signature requirement.
The only reason I wanted to try to make this fit back into the workflow is for after the fact processing done by admins (who will definitely have a LC account). I figured an admin could trigger the workflow by sending the user (no LC account) an email with the URL to the pdf form - I assumed this could be done with some type of init form. The 2 different possible scenarios:
1. The user gets the email, fills the form and signs it and then provides the email address to the next user (again, no LC account) to fill and sign and then to a third user without an LC account to fill and sign and then if we could hook back into the work flow from there so that the admin could basically "check off" that their account was created which would then send an intro email to the user with their account info and other message.
2. Within the Init Form we provide the supervisor and security manager email addresses, so that when the first user submits the form, it automatically sends an email to their Supervisor (assuming we need to hook back into the workflow). And then eventuall we get to the "check off" part and go on our way.
After these three people sign the form, believe it or not, we need TWO (possible 4) more signatures. These people will have LC accounts.
Overall, I need to keep the form intact with the digital signatures so we can store the form. Would the HTTP Post submit to a servlet accomplish this? If so, where can I read up on this further?
Regarding the form storage, I originally thought this would be stored for viewing through Form Manager, but Adobe Support indicated that the admin would have to actually upload this filled out form through adminui, so this just sounded like a mess to me. I was hoping to have something where the admins could search for submitted forms as needed.
I hope this is all making sense. We spent so much money on this product and it's looking like we cannot use it now because of 1. requirement of an AD/LDAP account to use Form Manager and 2. if we don't use Form Manager, it looks like we cannot utilize web services due to our requirement of a digital signature.
I just need to get this form online and ideally, get it hooked back into the workflow somehow with keeping the digital signature in tact.
Another question - What if we received the form via email with the first three parts filled out (data + digital signatures from the non-LC account holders). Can we get this form submitted into the workflow then to utilize Form Manager?
Thank you so much for your help, I really appreciate it.
-Jennifer

Understanding digital signature

i generate certificate "test.cer" using java keytool ? as i understand , test.cer contains PublicKey and PrivateKey.
So i can import that Keys for digital signature.
so why i need
KeyPairGenerator keyGen = KeyPairGenerator.getInstance( "DSA" );
keyGen.initialize( 1024 );
KeyPair pair = keyGen.generateKeyPair();
PrivateKey privateKey = pair.getPrivate();
PublicKey publicKey = pair.getPublic();
Thanks

Rashad.Cahangirov wrote:
step 1) C:\Documents and Settings\User>keytool -genkey -alias MyCertificate
step 2) C:\Documents and Settings\User>keytool -certreq -alias MyCertificate -file myRequest.cer
Enter keystore password: test123456
step 3) C:\Documents and Settings\User>keytool -export -alias MyCertificate -file myCertificate.cer
Enter keystore password: test123456
Certificate stored in file <myCertificate.cer>
now at step4 - i want to sign data.txt use myCertificate.cer. What i must to do. any code or link to artcle which contains code sampleAs I already said, you sign with the private key and not the certificate. You verify with the certificate.
Your first 3 steps are flawed. You need to understand what you are doing so you should do some background reading first.
1) Applied Cryptography, Schneier, Wiley, ISBN 0-471-11709-9
2) Practical Cryptography, Ferguson and Schneier, Wiley, ISBN 0-471-22357-3
3) Java Cryptography, Knudsen, O'Reilly, ISBN 1-56592-402-9 dated but still a good starting point
4) Google
P.S. The basics for signing using Java are given in http://java.sun.com/j2se/1.4.2/docs/guide/security/CryptoSpec.html#Signature

How to embedd author certificate and user digital signature?

Hi,
I want to implement Digital Signature in my pdf using Netweaver technology. I am working on an offline scenario.
I have few question on this topic.
1) Once I sign the pdf do the input-fields in them get locked? Is no then how do I lock them to ensure that they are not tampered?
2) How to pass the certificate along with the pdf? Can I pass it through an email?
3) Is the digital signature completely done on Adobe Reader side or the program side?
Please reply urgently...
Thanks,
Vishal

hi
i've the same problem. i've found this solution, but you need download a JCE Provider that allow you to read the explorer certificate store.
You can try this one: https://download.assembla.se/jceprovider/
and the code:
import se.assembla.*;
public class Listcerts {
     public static void list() throws Exception{
          java.security.Security.insertProviderAt(new se.assembla.jce.provider.ms.MSProvider(), 2);
          KeyStore ks = KeyStore.getInstance("MSKS","assembla");
          ks.load(null,null);
          X509Certificate cert=null;
          String alias=null;
          int count=0;
          for (java.util.Enumeration e=ks.aliases();e.hasMoreElements();){
                    alias=(String)e.nextElement();
                    cert=(X509Certificate)ks.getCertificate(alias);
                    System.out.println("\n Certificado alias"+alias+":");
                    System.out.println(cert);
               count++;
          System.out.println ("NUM CERTS="+count);
now, i need the same solution for Firefox browser XP
good luck
Message was edited by:
meteko

How do I create a digital signature on a TCP or a UDP flow?

I am trying to convert samples of a voice signal, which is intercepted from the microphone, into fixed length digital signature bytes (using Hash, or) and attach these fixed length bytes to a communication session between two terminals (UDP or TCP "HTTP"). The other receving end should be able to identify the person at the sending side.
Any thoughts how I could do this?
Any help is most appreciated.
Sam

Sam,
If you have the Sound and Vibration toolkit it may make some things easier for you regarding the voice-recording aspect, but if you aren't recording and playing back the actual sounds, just using this for detection and digital signatures, you shouldn't need to worry about this.
1. For this you are going to be doing some form of Analog Input. Then you will be storing this data to a file. There are examples for both of these aspects in the NI Example Finder from within LabVIEW.
2. If you are going to be doing the FFT, there is a VI under the Mathematics Palette that performs this operation. Again you can use the same example for saving data to the file.
3. You would need to figure out what needs to be done to create a digital signature for this. There may be something in the Sound and Vibration toolkit for this, but I do not know.
4. For the UDP or TCP transfers, there are several examples for doing this and they cover how to create the connection and transfer / receive data. These too are in the NI Example Finder
5. This goes back to number 4, this would indeed be a separate program, but everything else would just be one project and one program.
6. This would depend on how the ID was created in step 3, again whether you do the algorithm on yourself or not. For comparing to the table, you would use a Search Array and some comparison functions, all depending on how you stored the data initially.
7. Graphs are all available on your Front Panel of your VIs and you would just wire up the data that you'd like and have it displayed on the graph.
There will not be an example for everything that you are wanting to do. The examples are meant to help you get started. Have you used LabVIEW before? I would recommend doing the 3 Hour LabVIEW Introduction Course to help you get started. This will cover some of the basic concepts that you will need to know in order to create your application.
Unfortunately I cannot write the code for you, only guide and direct you. LabVIEW is a programming language and does require the user to lay out and create their own program. You will not be able to just find three or four pre-built code-snippets and connect them together to get your appliction working the way you want it. You will need to develop the applications yourself.
Regards,
Jared Boothe
Staff Hardware Engineer
National Instruments

Digital Signature(s) Do I need Reader 10?

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