Digital Signature using acrobat x

I've made a form and included a field for a digital signature. I saved it as user enabled but it still won't let someone using reader only sign the document. I need help with this.

Seriously? Wow. Ok. Thanks. This is the product that was purchased for me through work so I'm stuck I guess.

Similar Messages

Multiple Digital Signatures in Acrobat 8.1

Hello to all, I am trying to have two people place two (2) digital signatures (using the method: Advance Menu Item | Sign & Certify | Place Signatures) on a PDF document.
There are no problems placing the first signature, but when the second person adds theirs, the first signature ends up having a yellow exlamation mark over the green check mark with the statement: "The revision of the documnet was covered by this signature has not been altered; however there have been subsequent changes to the doucment.".
I must have both signatures showing "green check marks", otherwise my document can be rejected when I submit it. I have version 8.1 of Acrobat and need a solution fast as I need to submit this document tomorrow.
Thanks in advance for any help provided.

I believe this behavior was changed in Acrobat 9.

Query in Deleting the Signature using Acrobat 9.0

Hello Folks,
We have used resetForm() method before removefield() in our coding
Observed result:
Our application uses VC++,If the document has one Digital Signature using the fix(Mentioned below) we can able to delete the signature in the document but when the document has many number of Digital Signatures the fix is not working.It threws an exception
·        “NotAllowedSecurity: Security settings prevent access to this property or method”
·        The exception Id for the above exception is “0x80020009”
    Note: The behavior is wrt to Acrobat 9.0, but the code is working fine for Acrobat 7.0 and 8.0 versions.
If we try the scenario in our application, on timestamp the document with Acrobat 9.0 and then signing the document with the same acrobat 9.0 and when deleting the signature using our application again our fix is not working it throws the above exception.
The code details are given below
//Get Nth Field is done
DISPID dispidRestet;
OLECHAR *methodReset = { L"resetForm" };
hr = jso->GetIDsOfNames( IID_NULL, ( OLECHAR** )&methodReset, 1, GetUserDefaultLCID(), &dispidRestet );
if( hr != S_OK) {
*errCode = kPSWErrIDispatchGetIDOfNames;
return FALSE;
dispparam.cArgs = 1;
dispparam.rgvarg = new VARIANT[ dispparam.cArgs ];
dispparam.rgvarg[ 0 ].vt = VT_BSTR;
dispparam.rgvarg[ 0 ].bstrVal = varResult.bstrVal;
dispparam.cNamedArgs = 0;
dispparam.rgdispidNamedArgs = NULL;
hr = jso->Invoke( dispidRestet, IID_NULL, GetUserDefaultLCID(), DISPATCH_METHOD, &dispparam, NULL, NULL, NULL );
if ( hr != S_OK ) {
*errCode = kPSWErrIDispatchInvoke;
m_pAvdoc->Close(0);
ret = FALSE;
EXCEPINFO exceptionInfo;
DISPID dispid2;
OLECHAR *methodName2 = { L"removeField" };
hr = jso->GetIDsOfNames( IID_NULL, ( OLECHAR** )&methodName2, 1, GetUserDefaultLCID(), &dispid2 );
if ( hr != S_OK ) {
*errCode = kPSWErrIDispatchGetIDOfNames;
return FALSE;
dispparam.cArgs = 1;
dispparam.rgvarg = new VARIANT[ dispparam.cArgs ];
dispparam.rgvarg[ 0 ].vt = VT_BSTR;
dispparam.rgvarg[ 0 ].bstrVal = varResult.bstrVal;
dispparam.cNamedArgs = 0;
dispparam.rgdispidNamedArgs = NULL;
hr = jso->Invoke( dispid2, IID_NULL, GetUserDefaultLCID(), DISPATCH_METHOD, &dispparam, NULL, &exceptionInfo, NULL );//here hr throws the exception for multiple signed documents
if ( hr != S_OK ) {
*errCode = kPSWErrIDispatchInvoke;
m_pAvdoc->Close(0);
ret = FALSE;
//return FALSE;
else{
m_pPddoc->Save(1,strPDFFile);
m_pAvdoc->Close(true);
Plese guide us how to over come the exception
Regards,
DOCNet.

Hi Leo,
             Thanks for your reply!!!.:-)
          Both the signatures are done by me only.
          The thing is the code works fine for one signature, but it throws an exception for documents having many signatures.
          Can you guide me how to proceed further.

I am unable to sign with Digital signature using a .PFX file. The button does not appear.

When I try to sign with a Digital signature using a .PFX file, the button to select the signature does not appear. I have JAVE SE 7 U11 10.11.2.21 platform in my add ons and JAVA Consol 6.0.33 and 6.0.35 in my extentions.
This problem is not encountered in Crome or IE-8
ASHISH

Regarding your first question about bookmarks, I think you discovered the answer in when you pressed the address bar. The second tab there has your bookmarks.
As for the keyboard, I'm not sure why your Firefox is reacting so slowly; mine seems to show keyboards even when I don't want them. If you have accumulated a lot of history, perhaps that's an issue?
Did you use any third party software to move your Firefox data from internal memory to the storage card?

Add Digital Signature Using C# and Acrobat SDK

Hi everybody!
Please, how can I digitally sign PDF documents using Acrobat Professional 8 API and C# language?
I know that I need use JavaScript APIs (IAC) but I can't find anything really helpful in the Acrobat SDK Documentation. Could anyone post a sample of how use javascript manipulation inside C# (Framework 2.0), or give me a direction?
Thank in advance!

Hi Felipe,
when i am signing the document.
I believe i am missing something in my code. After executing the code to sign, when i open it i get "The following signature fields are not signed".
Please let me know where i m doing wrong?
Here is my VB.NET Code
Dim gapp As Acrobat.CAcroApp
Dim gpddoc As Acrobat.CAcroPDDoc
Dim jso As Object
gapp = CreateObject("acroexch.app")
gpddoc = CreateObject("acroexch.pddoc")
If gpddoc.Open("C:\Test1.pdf") Then
jso = gpddoc.GetJSObject()
jso.SetUserPassword("'testpassword12'")
'jso.ShowMyMessage("SetUserDigitalIDPath")
jso.SetUserDigitalIDPath("'c:\\DrTest.pfx'")
jso.app.execMenuItem("ADBESDK:AddSignature")
jso.AddSignature(jso)
gapp.Show()
and here is the javascript
// password to use the digital signature
var sigUserPwd = "UNKNOWN";
// to test the sample without user input, specify:
// var sigUserPwd = "testpassword";
// path to the digital signature file
var sigDigitalIDPath = "UNKNOWN";
// to test the sample without user input, specify:
//var sigDigitalIDPath = "/C/DrTest.pfx";
// other variables the user can modify
var sigHandlerName = "Adobe.PPKLite";
var sigFieldname = "sdkSignatureTest";
var sigReason = "I want to test my digital signature program.";
var sigLocation = "San Jose, CA";
var sigContactInfo = "[email protected]";
/* Add a menu item for AddSignature */
app.addMenuItem( { cName: "ADBESDK:AddSignature", cUser: "Add My Signature", cParent: "Advanced",
cEnable: "event.rc = (event.target != null);",
cExec: "AddSignature(event.target)" });
// main function
AddSignature=app.trustedFunction(function (doc)
app.beginPriv(); // explicitly raise privilege
// if sigDigitalIDPath is not spcified, ask for user input
if(sigDigitalIDPath == "UNKNOWN"){
var cResponse = app.response({
cQuestion: "Input your digital ID path:",
cTitle: "Digital Signature",
cDefault: "/C/DrTest.pfx",
if ( cResponse == null) {
app.alert("No input.");
return;
else
SetUserDigitalIDPath(cResponse);
// if sigUserPwd is not spcified, ask for user input
if(sigUserPwd == "UNKNOWN"){
var cResponse = app.response({
cQuestion: "Input your password:",
cTitle: "Digital Signature",
cDefault: "testpassword",
if ( cResponse == null) {
app.alert("No input.");
return
else
SetUserPassword(cResponse);
// create a new signature field
var signatureField = AddSignatureField(doc);
// sign it
if(signatureField) Sign(signatureField, sigHandlerName);
app.endPriv();
// create a signature field in the upper left conner with name of sigFieldname
function AddSignatureField(doc)
var inch=72;
var aRect = doc.getPageBox( {nPage: 0} );
aRect[0] += 0.5*inch; // from upper left hand corner of page.
aRect[2] = aRect[0]+2*inch; // Make it 2 inch wide
aRect[1] -= 0.5*inch;
aRect[3] = aRect[1] - 0.5*inch; // and 0.5 inch high
var sigField = null;
try {
sigField = doc.addField(sigFieldname, "signature", 0, aRect );
} catch (e) {
console.println("An error occurred: " + e);
return sigField;
// define the Sign function as a privileged function
Sign = app.trustedFunction (
function( sigField, DigSigHandlerName )
try {
app.beginPriv();
var myEngine = security.getHandler(DigSigHandlerName);
myEngine.login( sigUserPwd, sigDigitalIDPath);
sigField.signatureSign({oSig: myEngine,
bUI: false,
oInfo: { password: sigUserPwd,
reason: sigReason,
location: sigLocation,
contactInfo: sigContactInfo}
app.endPriv
} catch (e) {
console.println("An error occurred: " + e);
// set a correct password for using the signature, so you can quietly sign a doc.
function SetUserPassword(pwd)
sigUserPwd = pwd;
// set path to the digital signature file
function SetUserDigitalIDPath(idPath)
sigDigitalIDPath = idPath;
Sumit

Adding a digital Signature in Acrobat X Pro

A recent update seems to have altered the digital signature. Before there was no problem and I used the signature I created in Acrobat 9 after upgrading to X Pro. But yesterday (after the update) I was asked for a password for the first time. Eventually I deleted the ID and tried to create a new on but cannot. I follow the steps - a new ID, then a new PKCS#12 file; I fil lin the details requested then on the next page it asks for a file location and password. I accept the default location and type in a password but after the enter I get a message that the passwords do not match.
How do I sole this or am I doing something wrong?

Do you enter the password twice? People have reported that the second password field isn't visible when using a low resolution screen.

Problems getting multiple digital signatures in Acrobat Reader form

I have a Word document that I converted to a form in Acrobat 9 Pro. I added two separate digital signature fields, one for a conference presenter and the other for the conference planner to sign. There are also a number of text fields where presenters give bio information. I saved the document using the Extend functionality so that a user who only has Acrobat Reader would be able to fill in the form, sign/save it, and then send it on to the conference planner. The first part is working fine. However, once the first user signs/saves the document, the extended functionality goes away. When the conference planner receives the document, it is essentially locked. She cannot sign and save.
Is what I'm trying to do possible? I feel like this would be fairly commonplace, but I may be going about it the wrong way. Thank you for any pointers.
-Brian

Hi Steve,
I have met similar problem. Using Adobe 9.4 I have prepared document with three signature fileds. I did signature in one of the field and then did extension to Reader. When I checked the propierties of document it occured that signing was not allowed. I couldn't sign it second time (not saying of Reader's user).
Is there missing any plug-in or something is wrong with a configuration (mentioned "Nothing has happened when signed" was set up)?
Wlodek

Unable to Split pdf form containing Digital Signature using Assembler

Hi All,
I am trying to split a pdf form into multiple forms using Assembler service provided by Adobe LiveCycle. Normal pdf's are getting splitted but facing issues with pdf's containing Digital Signature is there any way to split those forms please suggest ?????
Regards,
Ali

Hello,
We have a livecycle form that allows people to save an image with an image field and other data in some text fields.
The users having problems are using Acrobat Pro XI. They seem to be able to open the form, fill in some data and save the data just fine except for this image.
The image does not display when the user re-opens the form. However, if another user opens that saved form then that user can see the image OK.
Any ideas what might be happening?
Thank you.

Digital Signature crashes Acrobat 9 Pro

An error occurs when trying to Sign any PDF document, even when opening a very simple, one word (Times New Roman text only) PDF document. After opening the PDF in Acrobat Pro (WinXP Pro SP3), selecting Sign, Sign Document, Acrobat allows proper placement of the signature box, and accepts the password for the selected Signature ID. When <Sign> is then selected, Acrobat offers to save the document, and when the save location (any location) is selected, Acrobat returns the error below.
Adobe Acrobat 9.3 has encountered a problem and needs to close. We are sorry for the inconvenience.
Error Signature
AppName: acrobat.exe AppVer: 9.3.2.163 ModName: acrobat.dll
ModVer: 9.3.2.163 Offset: 00135fb9
The same source PDF document can be modified, or password protected, and then saved without a problem. Only when a digital signature is applied does the error occur. Acrobat has successfully Signed and saved documents on this PC previously, but starting experiencing this error about week ago. I have uninstalled Acrobat, reinstalled ver. 9.0 and applied the two updates to 9.3.2, and have generated new Digital Signatures, all with the same resulting error when signing a document. The new, signed PDF document is actually created, and a Digital Signature is found in the document, but is invalid, reporting:
Error during signature verification.
Signature contains incorrect, unrecognized, corrupted or suspicious data.
Support Information: SigDict /Contents illegal data
I have tried the troubleshooting steps in http://kb2.adobe.com/cps/403/kb403613.html, but without any progress; the error continues to remain. Any advice on how to resolve this will be greatly appreciated. Thanks.

Hi Mike,
After the Save As operation was done, did you see the signature appearance displayed in the signed signature field before you closed the doc? And if did see the signature appearance, did you happen to notice if there was a green check mark displayed in the blue message bar at the top of the file?
Thanks,
Steve

Acrobat 9,10 failing to validate digital signature while Acrobat 8 validating it.

I am facing an issue while validating a digital signature. I applied a certified signature with “Annotation, form fill-in, and digital signatures” but
when I apply Redaction “find and permanently remove” on a digitally signed document, Adobe Acrobat 9 and 10 complains that signature is Invalid But Adobe 8 is validating it. I have analyzed that Adobe Acrobat applying Redaction in append mode and original content of signature remains unchanged after Redaction.
Can someone let me know what should be the actual behavior?
Why Adobe Acrobat 9 and 10 failing to verify the signature even Adobe Acrobat keep enable Redaction which means it is allow to apply in a certified signed document with “Annotation, form fill-in, and digital signatures” option.
Prompt responses are greatly appreciated!!

When you sign, you should see where you can select the signature appearance name from a dropdown in the dialog.

PubSec Digital signatures in Acrobat 9

Hi,
i m developing a digital signature plug-in, PubSec, to be specific. My plugin will, hopefully, digitally sign open pdf, and also able to verify them. The signature i am creating will be standard so that any other plugin, including Acrobat's own, can also verify it, and my plugin can verify others too. For this, i will leave the Filter unset and only set subfilter appropriately.
Now, when implementing the signature creation and verification callbacks i found it very difficult, and in some cases am stuck, while getting required information from the provided arguments of the callbacks. For instance, from this structure "PSSigValidateDialogParams" i want to extract information such as:
- signature's verification status
- signer's certificate
- reason location, etc.
But so far i can only get the verification status as:
ASInt32 sigValDigest = ASCabGetInt( sigValCab, PROP_SigVal_Digest, kDSSigValUnknown );
ASInt32 sigValTrustFlags = ASCabGetInt( sigValCab, PROP_SigVal_TrustFlags, kDSSigValUnknown );
ASInt32 sigValId = ASCabGetInt( sigValCab, PROP_SigVal_Id, kDSSigValUnknown );
And i dont even completely understand what each of these mean. And i cannot get the rest of the info from the structure as well, as i cant find any discription about them in documentation. I did find a "Digital signature API Reference" document for acrobat 6, but none for acrobat 9. And even in acrobat 6, there is no description for most of the functions and structure, just the prototype.
Please help me get the above information from the PSSigValidateDialogParams, or atleast point me towards the documentation of the digital signature api reference for acrobat 9. Thanks

Hi,
Go to: http://livedocs.adobe.com/acrobat_sdk/9/Acrobat9_HTMLHelp/API_References/Acrobat_API_Refer ence/Digital_Signatures/PubSec.html#kPSSigTrustUntrusted
and search for DSValidState
enum DSValidState { DSSigBlank = 0,
DSSigUnknown,
DSSigInvalid,
DSSigValid,
DSSigDoubleChecked,
DSSigValidStateEnumSize
and here: http://livedocs.adobe.com/acrobat_sdk/9/Acrobat9_HTMLHelp/API_References/Acrobat_API_Refer ence/Digital_Signatures/PubSec.html#kPSSigTrustAll
enum DSSigValState { kDSSigValUnknown = 0,
kDSSigValUnknownTrouble,
kDSSigValUnknownBytesNotReady,
kDSSigValInvalidTrouble,
kDSSigValUnused,
kDSSigValJustSigned,
kDSSigValFalse,
kDSSigValTrue,
kDSSigValEnumSize
Regards,
mwak

When deleting the signature using Acrobat 9.0 -server threws an exception error displays

Hi Everyone,
I have built an application using VC++ ,in my application i try to sign a document using Acrobat 9.0 ,it gets properly signed and when i try to remove the signature it throws an exception that " Server threws an exception" ,the same code if executed in Acrobat in 7.0 is properly working.
The code is as below
DISPID dispid2;
OLECHAR *methodName2 = { L"removeField" };
dispparam1.cArgs = 1;
dispparam1.rgvarg = new VARIANT[ dispparam1.cArgs ];
dispparam1.rgvarg[ 0 ].vt = VT_BSTR;
dispparam1.rgvarg[ 0 ].bstrVal = varResult.bstrVal;
dispparam1.cNamedArgs = 0;
dispparam1.rgdispidNamedArgs = NULL;
hr = jso->Invoke( dispid2, IID_NULL, GetUserDefaultLCID(),
DISPATCH_METHOD, &dispparam1, NULL, NULL, NULL );
here after executing this line the hr throws "Server thres an exception"
What could be the reason please throw ur ideas.
Regards,
Nethaji

While deleting manually using acrobat 9.0 we are able to deleted it. But while deleting the same through code we get the following exception
hr = jso->Invoke( dispid2, IID_NULL, GetUserDefaultLCID(),
DISPATCH_METHOD, &dispparam1, NULL, &exceptionInfo,
&puArgErr );
ExceptionInfo = "NotAllowedError: Security settings prevent access
to this property or method."
puArgErr = 0
Exception id : 0x80020009
How to give the permission to invoke this method?

Problem with digital signatures in Acrobat 8

Is it true that the ability to directly create a digital signature field is available in Acrobat 7 & 9 but not in 8?
I have Acrobat Standard 8.0.0 and want to create blank signature fields before I certify a document, but can't find a way to do this directly. I can add a signature then delete it to create a blank field, but this is a very slow way of doing it.
I have read Forum articles saying choose Tools > Forms > Digital Signature Tool to create a blank field, but I have no Forms item in my Tools menu. Am I missing something, or do I need to upgrade to Acrobat 9 (or downgrade to 7!)?

Hi Brian,
It's not that version 8 per se cannot add a signature field, it's that you cannot create or edit form fields in the Standard version. If you had Acrobat 8 Professional, or you buy Acrobat 9 Pro, then you would have the capability to add and edit form fields (a signature fields is just a special purpose form field).
Steve

Digital Signatures using JSONP across Domains

Currently using Apex 3.2.1 through OHS. Not that that really matters in this instance, it would probably work the same in Apex 4.
I have working code to digitally sign an apex web form. The user presses a "Digitally Sign" button on the page, and an ondemand process runs the pl/sql package to read in the required CGI variables and create a signature string (similar to what you may see on a digitally signed PDF file), then saves that string to the database to mark that form as being digitally signed.
However, the web server that is running this code must be setup to require user certificates in order for this to work. Instead, what I would like to do is make a call to our login server which is already setup to require user certificates, and get the digital signature from there instead.
So far, I have created a mod_plsql call on the login server which I can access via a URL to return the signature, but what I don't know how to do is call that URL from an Apex page on the normal server? From my research, I'm thinking this is going to need to use JSONP because it would require cross domain communication. Am I going in the right direction here? I don't know a thing about JSON, and I'm not sure where to start.
Can anyone provide any guidance?
Thanks,
Kris

Anybody have any guidance on how to handle this?
Thanks!

Verifying a Digital Signature using message digest

Hi, i am new to java.
I have a Digitally signed document, i wanna verify this signed document against the original one.
i got the idea from this link:
http://help.sap.com/saphelp_45b/helpdata/en/8d/517619da7d11d1a5ab0000e835363f/content.htm
i signed a pdf doc with my SmartCard. the third party signing tool passed me the PKCS7 digital signature and i stored it in database. the problem arose when i retrieved this digital signature from DB and verified against the original doc using the message digest method. the base64 result strings are always not equal.
I am sure about this:
-the retrieved digital signature was GOOD.
-the original doc was GOOD.
but why i can't get the same 2 message digests? can somebody please help?
below is part of my code:
while (rsetDs.next())
     InputStream DSName2 = rsetDs.getBinaryStream(1);
     ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
     byte[] myByte = Base64.decode(byteStream.toString());
     ByteArrayInputStream newStream = new ByteArrayInputStream(myByte);
     CertificateFactory cf = CertificateFactory.getInstance("X.509");
     Collection c = cf.generateCertificates(newStream2);
     Iterator i = c.iterator();
     while (i.hasNext())
          Certificate cert = (Certificate)i.next();
          X509Certificate cert1 = (X509Certificate)cert;
          try
               java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
               /*=============DB MD (BEGIN)==================*/
               byte [] pubkeyByte = cert1.getPublicKey().getEncoded();
               md.update(myByte);
               md.update(pubkeyByte);
               byte[] raw = md.digest();
               String db_md = Base64.encode(raw);
               /*============DB MD (end)============*/
               /*=============PDF MD (BEGIN)==================*/
               DataInputStream m_disFile = new DataInputStream(new FileInputStream("C:\\" + "original_doc.pdf"));
               int m_iNum = m_disFile.available();
               byte[] msgBytes = new byte[m_iNum];
               m_iNum = m_disFile.read(msgBytes, 0, m_iNum);
               md.update(msgBytes);
               byte[] digestMd = md.digest();
               md.reset();
               String pdf_md = Base64.encode(digestMd);
               /*=============PDF MD (END)==================*/
..thanks in advance.

PKCS#7 SignedData objects are far more complex then it looks like you are taking them. First the PKCS#7 SignedData object will contain the OID for the message digest algorithm used and for the encryption algorithm used. From the looks of your code you are simply assuming MD5.
It also contains all of the data that was signed which is typically much more than just the document. It also of course contains the public keys and signatures which singed the document. In your case it will probably only have one public certificate and one signature.
Also note that a signature is an encrypted hash. Looking at your code I do not see you use encryption at all or rather for verification decryption.
Here is the basic process a signature takes.
MessageDigest md = MessageDigest.getInstance(algOID);
byte[] digest = md.digest(message.getBytes(charEncoding));
Cipher c = Cipher.getInstance("RSA/2/PKCS1Padding");
c.init(Cipher.ENCRYPT_MODE, priKey);
byte[] signature = c.doFinal(digest);Note that the resulting byte array is not the message digest but the encrypted message digest. You must use the corresponding public key to decrypt the signature to get the message digest value. It is because the trusted public key can decrypt the correct message digest that we know it was encrypted by the holder of the private key. It is because the decrypted message digest value is equal to my computed message digest value that we know the document has not be altered...
Now PKCS#7 SignedData does not take the message digest of the document, in your case your PDF. It creates a message digest on an ASN.1 object which includes the bytes of your document plus a bunch of meta data.
For more info on the exact format of a PKCS#7 signature file check out
http://www.rsasecurity.com/rsalabs/pkcs/pkcs-7/index.html
Look through this doucment for SignedData as a starting place and follow through all of the sub objects that make up a SignedData object. This will give you an idea of what is involved.

Digital Signature using acrobat x

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