Digital signatures(help)

So Im creating a form that has some required fields, 2 signatures (1 required), and a submint button(that for some reason works on rollover not push). Im setting the security with a pass allowing printing, filling and signing but when I send the form open it with acrobat reader I look at the security details and signing is not allowed. Can any1 tell me how to fix this?

Hi Paul,
Are you expecting a "wet ink" type of signature? That is, an image in the signature field that is a copy of a signature someone created with pen and paper? If that's what you really need then maybe a digital signature workflow is not what you should require from your client. However, in many respects a digital signature (at least in the electronic world) is a much more powerful tool then a wet ink facsimile.
In this day and age, anyone could grab an image of a wet ink signature, crop it and use it apply it to a document as if they were the original signer. In others words, in the electronic world a wet ink signature is not very secure. However, a digital signature cryptographically binds the signer to the document. As long as the digital ID used to create the digital signature comes from a trusted third party (i.e. a certificate authority that vettes the identity of the individual before they issue the digital ID) then you are get two things from the digital signature. One is document integrity (you will know if the document has been altered post signing), and the other is non-repudiation (the signer cannot deny that they were the person that applied the digital signature). If you are accepting digital IDs (it's the "manage trusted identities" thing you mentioned) issued by a certificate authority that does not vette the identity of the signer then you have to be a bit more leery of trusting the signer.
I don't know if the Entrust signature method has the ability to add a custome appearance that includes the wet ink facsimile, but if it does, your client could create a digital signature whose appearance looks like a wet ink signature. However, the bottom line is the lack of a wet ink  facsimile is not a cause of concern when it comes to digital signatures  in PDF files.
Steve

Similar Messages

  • Digital Signatures Help Requested

    I looked through the forums and there was one thread not too long ago that talked about digital signatures but didn't seem to focus on this particular problem, so I figured I'd start a new one hoping someone would have some advice.
    We receive a document that is digitally signed by our client. We view the PDF in the full version of Acrobat and have added these users as Trusted Users (in managed trusted identities).
    We Verify the Signatures that were added to the document and see the digital signatures at the bottom of the document but there's one thing that's not showing up and that's the actual "signature" or "signed signature" of the person. We only see a typed out version of their name.
    We've spoken to our client and they maintain that we should be viewing the "signed signature" and we need to figure it out.
    When I check the Signature Properties, it tells me that their signatures were created using "Entrust.PPKEF". Could this be the problem?
    As much as I'm reading up on Digital Signatures, it's my belief that we don't need to purchase any other software in order to view these properly. Am I mistaken.
    Any help would sure be appreciated.
    Paul

    Hi Paul,
    Are you expecting a "wet ink" type of signature? That is, an image in the signature field that is a copy of a signature someone created with pen and paper? If that's what you really need then maybe a digital signature workflow is not what you should require from your client. However, in many respects a digital signature (at least in the electronic world) is a much more powerful tool then a wet ink facsimile.
    In this day and age, anyone could grab an image of a wet ink signature, crop it and use it apply it to a document as if they were the original signer. In others words, in the electronic world a wet ink signature is not very secure. However, a digital signature cryptographically binds the signer to the document. As long as the digital ID used to create the digital signature comes from a trusted third party (i.e. a certificate authority that vettes the identity of the individual before they issue the digital ID) then you are get two things from the digital signature. One is document integrity (you will know if the document has been altered post signing), and the other is non-repudiation (the signer cannot deny that they were the person that applied the digital signature). If you are accepting digital IDs (it's the "manage trusted identities" thing you mentioned) issued by a certificate authority that does not vette the identity of the signer then you have to be a bit more leery of trusting the signer.
    I don't know if the Entrust signature method has the ability to add a custome appearance that includes the wet ink facsimile, but if it does, your client could create a digital signature whose appearance looks like a wet ink signature. However, the bottom line is the lack of a wet ink  facsimile is not a cause of concern when it comes to digital signatures  in PDF files.
    Steve

  • Digital signature help

    I have a created a PDF in Acrobat 8.0 that requires multiple digital signatures. I am emailing the file to the people and asking for their digital signature.  When I try to save the file with Person1's signature to a file with Person's2 digital signature, it deletes Person's1 signature and inserts Person2's signature. How can I save the file so both signatures are retained?
    I need help ASAP. It is driving me crazy.

    Hi,
    You can't merge signed files because it modifies the PDF layer which would break the signature. One of the limitations of digital signatures is they are serial operations, that is one signature follows the previous signature. You cannot do this in parallel and merger the contents into one file. You could put the multiple files into a single Package (later renamed to Portfolio in Acrobat 9) file, but each signed copy would still be a stand alone file attachment within the Package.
    The bottom line is, if you really need all of the different digital signatures in the same PDF file you need to send it to the first recipient, have them sign it, and then forward the file to the next recipient (or back to you).
    Steve

  • Digital Signature HELP NEEDED!

    What would cause a digital signature to work for the desiger of a form, but not for the user??

    GJ,
    I am using standard XI and tried saving my form as a reader enabled PDF but the signature field is still not working in reader. will this work of is Pro required?

  • Please help me with the digital signature validation problem?

    Please help me with the digital signature validation problem?

    Hi
    Execute the program in the Debuggin mode.
    In the Debugger Window
    Select Breakpoint -> Break point at -> Breakpoint at source code Menu Item and enter the details of the program/include/line no..
    Activate the System Debugger On from the Settings Menu.
    Hope this would help you.
    Murthy
    Edited by: Kalyanam Seetha Rama Murthy on Jul 18, 2008 7:20 AM

  • Validating digital signatures. NEED HELP ASAP!

    I emailed a form to an employee, who created and applied a digital signature to it.  The form was emailed back to me and I received the message 'At least 1 signature requires validating/validation."  I go through the steps to trusting and validating, yet when I reopen the document after saving it, I keep getting the same message to validate.
    Please help!

    When you contacted Canon what did they say?

  • Need Help in Digital Signature

    Hello,
    We want  to implement digital signature functionality for
    1.Bid invitation creation/Bid creation process
    2.File signing for documents uploaded in C-folder.
    It would be better if you could share documents about how to implement digital signatures.
    Please note my yahoo ID : [email protected]
    Thanks & regards,
    Avinash

    Hi ,
    If you wish to use your own texts/mono/signatures when outputting a purchase order, proceed as follows:
    1. In the step Adjust Form (Layout Set) for Purchasing Documents, check to see at which points you can store your own texts in the standard form MEDRUCK.
    2. Enter the texts in accordance with your requirements using the SAPScript editor. To do so, choose SAPscript Standard Texts.
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    Print operation (e.g. new printout or printout of changes (change notice))
    Purchasing document type and item category
    Text object, text ID and the text name
    Print sequence in which the text is to be outputted
    In the standard system, the purchasing form is called "MEDRUCK". MEDRUCK is a multi-purpose form controlling the output of RFQs, POs, outline agreements, delivery schedules, reminders/urging letters, rejection letters, change notices, and order acknowledgment expediters.
    Changing the Purchasing Form
    Prerequisites
    Before you make any changes to the standard form, you should consider the following.
    Change Existing Form or Create New One?
    You can either change the standard form or create a new form by copying the standard one.
    When you change the standard purchasing form, you must first create a correction number, because changing the standard form represents a customer modification. Thereafter, the system maintains both your changed version and the SAP version of the form.
    If you create a new form, you must assign it to the appropriate message type (PO, rejection letter, etc.) before the system can use it for printing.
    Its recommend that you always create your own form. This makes it easier to distinguish between your customized form and the standard form provided by SAP.
    Hope ths helps
    please reward points
    Sunil

  • Help with Mail & Digital Signatures

    My work is moving to Common Access Cards and digitally signed email. I can't get Mail to bring up the digital signature icon when I use the CAC card. It works fine with a software certificate, but I can't use that.
    The certificates in the CAC show up in a different keychain, and I think Mail wants the certificates in the login keychain. I've tried the following:
    -- importing the certificate from the CAC (didn't allow it)
    -- changing the default keychain to the CAC keychain (caused mail and keychain access and Safari to all quit)
    I don't really want to try logging in using the CAC card -- the only instructions I've seen to do this require messing around with Terminal and other files. Seems the potential for messing things up is rather large.
    Anyone know how I can get Mail to recognise the CAC card for digital signatures?
    Mac Pro   Mac OS X (10.4.9)  

    I haven't had to do this myself, but these instructions may be of help, if you haven't already seen them.
    Matt

  • Jar files with digital signature -pl help

    Hi there
    is there anybody who will help me guiding step by step how to create a jar file (executable) with digital signature?
    thanks in advance.

    Sorry, digital signatures have nothing to do with decompilation security. The short answer is, there's nothing you can do about it. Search the forum for 'obfuscator', a lot of people have asked the same question.
    -Ron

  • HT2573 I am using macbook pro with update of 10.7.5...I am not able to authorize my digital signature. It is showing crypto service provider is missing. I am in a big problem. plzzz help me out....thanx

    I am using a mac book pro version 10.7.5..I am not able to authorize my digital signature.It is showing crypto service provider is missing. I am in a big problem . plzzzz help me out. Thanks

    You have 10.6 on that machine, I suggest you stick with it for performance, third party hardware and software reasons as long as possible.
    Consider 10.8 (not 10.7) when it's released, because 10.7 and 10.8 will require a new investment in software and newer third party hardware as it requires newer drivers the old machines won't have. (forced upgrade because of software, really nice of them)
    http://roaringapps.com/apps:table
    Far as your Safari problem do these things until it's resolved:
    1: Software Update fully under the Apple menu.
    2: Check the status of your plug-ins and update (works for all browsers) also install Firefox and see if your problems continue. You should always have at least two browsers on the machine just in case one fails.
    https://www.mozilla.org/en-US/plugincheck/
    Flash install instructions/problem resolution here if you need it.
    How to install Flash, fix problems
    3: Install Safari again from Apple's web site
    https://www.apple.com/safari/
    4: Run through this list of fixes, stopping with #16 and report back before doing #17
    Step by Step to fix your Mac

  • Need help with implementing Digital Signatures

    Hello,
    Here's an excerpt from a security book:
    To create a digital signature, a sender first takes the original plaintext message and runs it through a hash function.
    The Secure Hash Algorithm (SHA-1) is the standard for hash functions.
    The hash value is also known as a message digest.
    Next, the sender uses the its private key to encrypt the message digest. This step creates
    a digital signature and authenticates the sender, since only the owner of that private key could
    encrypt the message. The sender encrypts the original message with the receiver’s public key
    and sends the encrypted message and the digital signature to the receiver.
    The receiver uses the sender’s public key to decipher the original digital signature and reveal the message
    digest. The receiver then uses his or her own private key to decipher the original message.
    Finally, the receiver applies the agreed upon hash function (e.g. SHA-1 or MD5) to the original
    message. If the hash value of the original message matches the message digest included
    in the signature, there is message integrity-the message has not been altered in transmission.
    I would like to implement the sender's part and create an encrypted message and the digital signature.
    Suppose I have in hand a message (let's call it myMessage), my private key (let's call it myPrivateKey) and the receiver's public key (let's call it receiverPublicKey).
    In order to encrypt the original message with the receiver’s public key I've implemented this piece of code:
    Cipher cipher = Cipher.getInstance("RSA");
    cipher.init(Cipher.ENCRYPT_MODE,receiverPublicKey);
    byte[] binaryCryptData = cipher.doFinal(myMessage.getBytes());
    String encPayload = Base64.byteArrayToBase64(binaryCryptData);
    return encPayload;In order to create the signature I've implemented this piece of code:
    Signature RSA = Signature.getInstance("SHA1withRSA");
    RSA.initSign(myPrivateKey);
    byte bt[] = message.getBytes();
    RSA.update(bt);
    byte[] signature = RSA.sign();My assumption is that I don't follow the exact guidlines in the book for the sender.
    Can someone please let me know what I'm missing and help me in adjusting my code with the books standards?
    Thank you in advance,
    Roy

    it's your homework, not ours.
    Congratulations on typing in everything BUT the most important part that it's all about, but that's not enough.

  • Need help making digital signature field read only if required fields are null

    Using Adobe LiveCycle Designer, I have a digital signature field.  I want to prevent users from being able to digitally sign the pdf if any required fields in the pdf are null or blank.  I'm a newbie to scripting so any detailed help would be greatly appreciated.  The required fields in the pdf include radio buttons, check boxes, text field, etc.  I appreciate any help anyone can provide.
    Thanks

    Exactly how you check a field for being empty depends on what type of field it is. For text fields, you should get the field's value as a string and compare it to an empty string, something like:
    var val = getField("Text1").valueAsString;
    if (val) {
        app.alert("Field is not empty");
    If there is a default value that needs to be changed, you would compare to the default value:
    var f = getField("Text1");
    var val = f.valueAsString;
    if (val !== f.defaultValue) {
        app.alert("Field value is OK");
    For check boxes and radio buttons, you'd compare to the string "Off", which means none in the group is selected.
    For dropdowns (combo boxes) and list boxes, there is normally one value selected, so you would have to get the value and check against the default value (or something else) to see if the field is properly filled in.
    You could place the script there, but I usually use a separate button that I encourage the user to click in order to check the field. The problem with using the Will Save event is you can't prevent the save from happening.
    The script can loop through all of the fields (and test all required ones), or you could set up an array of field names to check.

  • Need Help Locking Digital Signature Field

    I am working on a form with a number of sections to be completed by various departments. When a section is completed, I have a digital signature set to lock the fields related to that section. The form is sent to the next department and so on… Locking the form fields with the digital signature works just fine. The problem I have it that when viewing the form in Acrobat 8 Pro, the digital signature can be right-clicked on and cleared. This unlocks all the related fields and makes the form free for editing.
    Is there a way to lock the digital signature to prevent using the “Clear Signature” function?
    Thanks for any help,
    Richard

    George,
    Thanks for the quick reply.  Upgrading to Acrobat 9 may be an option.  If not, is there a way to lock these fields with scripting?  Or applying a password after signing?
    Thanks again,
    Richard

  • Creating and using a digital signature - Not Working / Help Please?

    I have Acrobat X Pro (10.1.11). I am trying to setup a digital signature that is either a scan of my own signature, or a digital version that looks like hand writing. I've gone through a number of help documents and I am still getting something different. What I get is a Printed Name with some text next to it (i.e. Digitally Signed by "my name" DN: cn="my name, o, ou, e-mail, etc.".
    Anyone have any idea how I can start from scratch and create a digital signature that I can simply place on PDFs that looks like my siggy?

    I believe you are confusing digital signature and digital signature appearance. You can create a custom appearance and use it in your signatures. Go to Edit->Preferences->Signatures->Creation & Appearances->More... In the Appearances section in the bottom portion of the dialog select "New" button. Configure Signature Appearance dialog comes up. In the Title field you enter the name of this appearance. In the Configure Text section of the dialog you check which values you want to have in the text part of the signature appearance (you can deselect them all). In the Configure Graphics section you can select one of the radio buttons. "Imported Graphics" allows you to browse to the file that contains your scanned signature (or your picture ). "Name" will place your name as it appears in your signing certificate.
    Then when you sign a PDF in the "Sign" dialog click on the down arrow in the Appearance: section next to the displayed appearance name (out-of-the-box is says "Standard Text") and you'll get a drop-down list that contains the name of the appearance that you created. Select it and that will be the appearance of your digital signature. This same drop-down list contains "Create New Appearance..." item which when you select it allows you to create a new appearance in the same way as I described in the first paragraph.
    After you select your appearance it will show up when you sign again.

  • Need help with Digital Signatures Please

    HI Folks,
    This is probably a really ignorant question but.....I have
    users who download packaged files to run on their own PC. Have run
    into the problem of the security warning - Publisher could not be
    verified....and providing the choice to run, or cancel the file.
    Suggestions?

    keithgcampbell wrote:
    > HI Folks,
    >
    > This is probably a really ignorant question but.....I
    have users who download
    > packaged files to run on their own PC. Have run into the
    problem of the
    > security warning - Publisher could not be
    verified....and providing the choice
    > to run, or cancel the file. Suggestions?
    >
    On your web page warn users that this happens or buy a
    digital signature
    and sign your files?
    Andrew Poulos

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