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Digital Signatures: General Questions

September 4, 2015, 3:57 am
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Hi,

 

I am hoping someone can help me.  Please understand that i am new to this so I might sound a bit stupid. I have been asked to setup digital signatures (for our own internal use only) in my company and I am having some difficulties in doing so.  It took some time but I managed to get an internal CA up and running and now I have my own digital ID.  When I use this digital signature to sign a test document and send it to my colleague, he gets the following message:

 

'Signers identity is unknown because it has not been included in your list of trusted identities and none of its parent certificates and trusted identities'

 

The good news is that I managed to get past this error message on MY own PC.  In Adobe Professional, I went to Edit=> Preferences => Security => Advanced Preferences => Trust All root certificates in the Windows Certificate Store for the following operations => Selected 'Validating Signatures'     This worked.  I checked this up and it said:

 

Windows Integration:

Specify whether to trust all root certificates in the Windows Certificates feature when validating signatures and certified documents. Selecting these options can compromise security.   Note: It is not recommended to trust all root certificates in the Windows Certificate feature. Many certificates that are distributed with Windows are designed for purposes other than establishing trusted identities.

 

My problems is that I don't know how to get rid of this error message using another solution.  What are the drawbacks of having this selected?

 

The second error message I get is as follows:

 

'Signature is valid but revocation of the signer's identity could not be checked'

 

Again I am able to solve this by going to Edit=> Preferences => Security => Advanced Preferences => UNTICKING 'Require certificate revocation checking to succeed whenever possible signature verification'  When this option is unchecked the error goes away and my signature is fine.

 

We are using signatures for internal use only so is  revocation checking necessary?

 

Thanks in advance if anyone can help.

 

Regards,

 

Declan

 

P.S I have it working but to be honest, I don't know why!! :o) :o) :o)

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Edit one area of PDF after electronic signature

September 5, 2015, 5:03 am
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Is it possible to edit only one section/area of the PDF after electronic approvals have been made, without removing all the electronic signatures? For example, we edit one section of the file which needs to be approved by only one approver, but the approvals of the other signatories don't need to change because their sections did not change. Thanks in advance!

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Create a custom stamp that includes my signature and the date is automatic

September 5, 2015, 10:37 am
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Hi

 

I'd like to create a custom stamp that has text, my signature and inserts the date automatically. I'd also like the option of stamping every page in a document without doing each page manually. I this possible?

 

Go easy with me as whilst i can follow instructions not too technically minded.

 

Many thanks

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how to secure stamps on pdf document, as I need to aviod snipping the stamp by snipping tool or copying it, we added these stamps as an image on pdf document

September 6, 2015, 6:28 am
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Hi All,

 

I wonder if there is a way to protect my custom stamps that added to pdf document, the stamp is an image file, I need to avoid copping, snipping even moving the stamp in the document from one location to another, is there a way to make the stamp part of the pdf document so it can't be edited or removed/used by someone else? 

 

 

 

Thanks

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Missing security updates for Acrobat 9.0.0.332 and Flash Player 10.1.53.64

September 7, 2015, 9:16 pm
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Security updates which apply to this computer and are not currently installed.  Hot fix ID:  EOL Adobe.  I don't understand. 

Are the EOL security updates available or not?

 

What am I supposed to do about the vulerabilities?

 

Source of this information:  Belarc Advisor/Microsoft Security Bulletin Summary

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protect Acrobat XI file from being copied or moved?

September 8, 2015, 12:22 pm
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How do I protect an Acrobat XI PDF file from being copied and moved to an external drive?

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How do I create multiple digital signatures in Acrobat Pro 8?

September 8, 2015, 1:09 pm
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I sign my documents using my digital signature, but when my wife tried to digitally sign a document (not the same document, one of her own), it popped up with my signature and didn't offer a choice to use that one or create a new one. I can't find anywhere that will allow for a second user's digital signature. This is NOT the same as having multiple digital signatures on the same document, just one person's signature on a document but giving that person an opportunity to create a separate digital signature for themselves, rather than the main user.

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protect file from being moved from one thumb drive to another

September 8, 2015, 1:17 pm
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I'm going to be sending someone a thumb drive that contains a PDF file, but I need to protect the file so that the recipient can't copying it onto another drive.  I’ve tried setting the file permissions so that neither Printing nor Changes are allowed and so that Content Copying is not enabled.  But the file itself can still be copied and moved.

How can I add that final layer of protection?

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"Restrict Editing" Option under "Protection" Panel

July 31, 2015, 11:13 am
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I am trying to restrict others from editing my PDF file by opening up the Protection panel. However, there is no "Restrict Editing" option for me, only Encrypt. How do I get access to the "Restrict Editing" option?

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How do I edit password protected documents when no one remembers the password?

September 9, 2015, 9:26 am
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I have been asks to edit documents that were created by someone else who no longer works here.  They are password protected and no one knows the passwords.  Those documents are too extensive to start over and only a few words need to be updated.  How do I reset the passwords so I can edit the documents?

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How can I restore existing signature files?

September 9, 2015, 10:35 am
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I had to change my login ID to my PC.  When i go to sign documents (Place Signatures)  the signature files no longer show up.  I know they are still on the PC since nothing changed other then who i am logged in as.  How can I restore the existing signatures without recreating them from scratch?  I have for variations depending on what type of doucments I am signing and they took a lot of work to get correct.

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'Could not send' error message when sending a file for a signature

September 9, 2015, 11:44 am
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Please help. I have been sending files for signatures for a while and suddenly Adobe says it 'could not send' and that an error occurred and to try again. Tried several times, same thing. Anyone know what's going on?

 

Thanks.

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Create personal electronic signature

September 10, 2015, 6:10 am
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I use my computer for both home & business.  I have a formal company certified digital signature requiring PKI card installed for business use.  Works great.  How would I go about to create a simple personal digital signature for my home correspondence that is NOT associated to my company credentials.  Something simple that just has my signature, home address and date.  So I don't need to print it out, manually sign it, scan it back in to send it off.  (using Acrobat XI - Windows 10)

Thanks,  Steve

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Signing Not Allowed after Enable Forms Fill-In & Save in Adobe Reader

August 22, 2012, 12:30 am
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When using Adobe Acrobat X Standard and creating a fillable form that uses digital signature, selecting

File / Save As / Reader Extended PDF /

Enable Forms Fill-In & Save in Adobe Reader

 

changes the security for Signing to Not Allowed.

 

When using Adobe Acrobat X Pro and creating a fillable form that uses digital signature, selecting

 

File / Save As / Reader Extended PDF /

Enable Additional Features

 

does not change the security for Signing to Not Allowed.

 

Is there a way I can use Standard so users can use digital signatures in Adobe Reader?

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How To Fix PDF Search In Windows 7 64 bit ?

September 10, 2015, 6:45 am
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How To Fix PDF Search In Windows 7 64 bit ?

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Sign and Certify (Visible Signature) issues

September 10, 2015, 8:39 am
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Hi everyone.

 

I asked the same in the forum Collaboration & Commenting by mistake.

 

We have been having problems with Certify (Visible Signature) when signing a file.

The error we get is "There was an error when attempting to commit this signature. The document was not saved. The file may be read-only, or another user may have it open. Please save the document with a different name or in a different folder".

I must say that this happens randomly and I must add that nobody is using the file and the file has not the property "read only" enabled.

The version of the app is Adobe Acrobat Standard XI version 11.0.12, and the OS we are using is Windows 8.1 Pro 64 bit and the computer has RAM: 8 GB and processor Intel Core i7 5500U @ 2.40 GHz.

 

Also, when the error doesn't show up, sometimes the signature does not appear in the document, so we have to start all over again to sign a document.

Sometimes, we can sign only one document at a time. After that, we need to close the app (Acrobat) and open it up again to sign another document.

 

I have read several forums. I have run all the updates for Adobe Acrobat as well as Windows updates.

The security (enhanced) has been disabled and the appearance of the signature is set up as follow:

  • Configure Graphic --> Imported Graphic
  • Configure Text --> Show: Name, Date, Distinguished name, Logo, Labels.
  • Text property: Auto.
  • Default Signing Method: Adobe Default Security
  • Default Signing Format: PKCS#7 Detached.
  • When signing: Include signature's revocation status.

And in Page Display, the option Show large images is enabled.

 

We can sign near to 50 docs a day. All the docs we receive are in PDF and must be reviewed and approved by several users. The issue only happens in this computer and this person is the only one that have this particular computer with this OS and this version of Adobe Acrobat Standard.

Finally, we work with workflows. The issue happens during the workflow as well as with any other doc out of the workflow. I have double checked that the file is not in read only as well as nobody else is using it at the same time. As I said, It also happens out of the workflow.

 

I wait for any comment or remote support in the case you can provide it.

 

Thank you.

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forgot my password on adobe reader for signature

September 10, 2015, 8:49 am
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I forgot my password for adobe reader signature with certificate

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Acrobat XI Standard combine a password protected file? "Portfolio" not shown available in Acrobat XI Std.

September 11, 2015, 6:20 am
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Using Acrobat XI Standard I can't combine password protected files.  You don't seem to have a choice to allow page extraction if you are not permitting document changes.

The help seems to say use a portfolio. Is portfolio available in XI Standard?  If not how do I allow page extraction when I don't what people to edit content, other than fill in form fields and add comments?

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Can you apply security features to a form to be applied AFTER the form is filled in?

September 11, 2015, 10:32 am
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I have a client that wants me to create a form and have security features in place so that once it is filled out it is "locked-down". Is that possible?

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Redactions not saving

September 11, 2015, 11:43 am
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Hello,

 

We have a user that applies many redactions to large pdf documents. The issue he is having is sometimes when he saves and reopens the file the redactions are not saved. At times he gets a message 'The document could not be saved. There was a problem reading this document (23).' which will then attempt to make him save to a different location. According to him if he cancels out and saves again the save works and the redactions go through.

 

The files he is working with are on a shared drive but he has had the error working with the files locally as well.

 

We have tried to turn off protected mode and disabling the details pane in Windows Explorer.

 

If anyone has any idea what could be going on I would appreciate it.

 

Here is some information on the PC:

 

Windows 7 Enterprise (x64)

Intel i5-3470

8.0 GB RAM

Adobe Acrobat X Pro version 10.0.0

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