Digital signature related

Hi,
Have some of the doubts related to digital signatures in Interactive Forms.
1. Can we use digital signatures from third part / external certification agency (CA) such as -Entrust ,while developing Interactive forms in SAP?
2. How signatures can be stored / retrieved from form? ( e.g. Form is developed using WD ABAP)
3. If yes, can anybody provide the steps / information on how above points can be achieved?
Regards
Akshay

Hi Akshay,
There is a eLearning class on securing adobe forms, [Securing Online Interactive Forms by Adobe (Session 8)|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/media/uuid/40cacc80-c1fc-2a10-f8b5-9e33b1829552]. This is done in Java Web Dynpro, but it might give some insight to what you are looking for.
Try these links too...
[Digital Signatures and Certification in Forms|http://help.sap.com/saphelp_nw04s/helpdata/en/18/ecb69017ad4765855425b97f666470/frameset.htm]
[Securing SAP Interactive Forms software by Adobe|https://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/b08aaa7b-b2f3-2a10-5591-f472a273b90a]
Hope this helps...
Cheers,
Kevin

Similar Messages

Excel 2013 crash - related to digital signature?

This is a cross-posting of a thread originally started in Microsoft Answers (Office- Excel) forum, advised to post in this forum by MS support engineer Mohan Suryanarayan (link to other forum: here).
I have a VB macro in file A (which otherwise contains only several Excel Tables with named ranges). My digital signature (for signing code) is attached to file A.
As the macro executes, the Open file dialog is called up so that the User can select a secondary file to open (file B or C).
Files B and C contain several sheets with formulas and Excel Tables, and also their own extensive VB macros. My digital signature is also attached to files B & C.
The remainder of the macro in file A simply executes an update of the Excel Tables in the secondary file, before saving & closing it.
I have been finding that during execution of the file A macro, Excel crashes and closes all open Excel files.
If I remove the digital signature from the secondary files then the macro in file A executes with no problem.
The macro was written in Excel 2007 and on a different laptop, with different digital signature, and used to have no problem at all. When a new laptop was purchased a new digital signature was obtained and placed into all of the files.
Execution of file A is a critical process - I need help with stopping the crash, while maintaining a digital signature in the secondary files (so that their own macros can execute).
Event Viewer error shows the following:
Faulting application name: EXCEL.EXE, version: 15.0.4667.1000, time stamp: 0x543d366c
Faulting module name: mso.dll, version: 0.0.0.0, time stamp: 0x5447696f
Exception code: 0xc0000602
Fault offset: 0x011aafdd
Faulting process id: 0x2d58
Faulting application start time: 0x01d01e17eafcd0bb
Faulting application path: C:\Program Files\Microsoft Office 15\root\office15\EXCEL.EXE
Faulting module path: C:\Program Files (x86)\Common Files\Microsoft Shared\Office15\mso.dll
JL Latham replied:
Tom, all I can give you is relatively non-information. I haven't experienced that type of behavior even in Excel 2013 with digitally signed macros in multiple workbooks. But my digital signature is a commercial one from DigiCert, not
self-cert. I'm not even sure what piece of Excel or Office processes the digital signature (that is, whether it is mso.dll or not). But your whole process has more moving parts than most of mine involving multiple workbooks do - I quite often turn
off .EnableEvents when doing things like that just so event driven macros in the other workbook(s) do not execute.
Do the macros in the 'B files' have to execute during all of this processing in file A? If not, have you tried turning interrupts off:
Application.EnableEvents = False
before starting to work with the B-files? Maybe something in them, such as a Worksheet_Change() or other event triggered process is messing things up?
If you do use Application.EnableEvents=False, remember that you MUST re-enable that later in the code with Application.EnableEvents=True to get responses to things like button clicks, changes in a worksheet or other event driven processes
to run 'normally' again.
Have you looked at this discussion:
http://answers.microsoft.com/en-us/office/forum/office_2013_release-excel/excel-2013-crashing-immediately-when-attempting-to/ea2ab100-5525-4a0d-a3cf-6977319f954f
Sounds very similar to yours - original signature created in 2007, and crashing in 2013. Some suggestions were made, but whether they fixed the issue or not is unknown: OP never came back and said "fixed it" or "didn't fix it".
I replied:
In answer, the secondary B files don't execute any part of their macros during the A file process, and I hadn't included an EnableEvents = False within the file A code. However, I have just tried it to check if it made any difference and unfortunately it didn't.
I had read the thread you gave a link to before posting, and also the sub threads given within that one, but didn't see anything I thought of immediate parallel other than an Excel 2013 crash.
The way I read the linked thread was that a User added a signature in Excel 2007 and when they tried to open the file Excel (2007?) crashes, although other people using Excel 2013 can open it (not clear whether it means others can open the one with
the 2007 signature or without it).
Anyway, the differences in my situation are that:
(1) my B-files were originally created in Excel 2007 on a different laptop to current and had their own signature attached. I maintain a 'stock' of B-file versions, some of which have the old signature and some the new. If I run the A-file macro
on one of the B-files with the old signature then it executes ok;
(2) I am able to open the B-files ok, no matter whether the signature in them derives from the old laptop with Excel 2007 or the new laptop with Excel 2013;
(3) the macros within the B-files execute ok (this includes any versions of the B-files which still have an old signature attached, by removing the old signature and replacing with the new and executing on the new laptop);
(4) the offending operation which triggers the crash (when the B-files have the new signature attached) is a Resize of the Excel Tables within the B-file. I understand that I may eventually have to find a workaround for this operation but initially
I want to sort out the signature issue (I'm reasonably sure the signature issue is not a red herring where the Resize is the 'real' problem).
Regards, Tom

Hi,
According to your description, this issue occurred with some particular files that stored in SharePoint site. Did the user download the file to local disk to print?
Based on the event log >>Faulting module name: EXCEL.EXE<<, it does not show the root Faulting module. Thus, please try to follow this KB to do general troubleshooting:
https://support.microsoft.com/en-us/kb/2758592
Then, if you have used "printer status application", please go to Device settings -> Installable options -> Printer Status notification and select disable.
If this issue still exists, we may need to collect the App crash dump file:
https://technet.microsoft.com/en-us/sysinternals/dd996900.aspx
You can try to analyze dump by yourself if you would like to：
How to analyze app crash dump file:
http://blogs.technet.com/b/askperf/archive/2007/05/29/basic-debugging-of-an-application-crash.aspx
Regards,
George Zhao
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Itunes wont install on vista, No digital signature

I had a problem were Itunes would not update or anything Apple related (quicktime etc) so i deleted Itunes and tried to run it as a fresh copy.
Yet when i download it and try to run the application i get the box from windows asking me if i want to run it, but in this box next to publisher it says unknown.
When i click run nothing happens. The box disappears and thats that.
If i click on the application and go into properties and go into digital signatures it says the digital signture is not valid. Ive tried downloading it with Explorer, Firefox incase that was it. I have even done a clean install of windows and tried to install itunes first incase there was a conflict.
Can anyone please help because its driving me nuts!

Mr. Peck-- Would like your advice re: where to post this question. I cannot update ITunes and Quicktime to the newest version using apple update in the windows environment. I have tried disabling antivirus software without help. Error is that it is not receiving a "valid signature." Installation on the mac side of updated quicktime and Itunes works fine. Windows version is XP SP3-- with appropriate updates.
Is there a solution that you know of? Where would you suggest posting this question?
Thank you,
Mark D

Adobe form Digital Signatures

Hello SDN,
I have to implement Digital signatures in my Webdynpro interactive forms. In sdn I found one example related to online Interactive form security but for offline I couldnt find.
In offline scenario, a user will send pdf form to customer or employee etc to fill the form and send it back.
1) Here how a receiver will know that he got the form, from an authorized person?
2) Once the form is filled and send it back, how receiver can validate whether the filled form came from an authorized person?
3) Also how exactly I can use digital signatures? what are the technical requirements for implementing digital signatures?
4) For implementing digital certificates do I need to have SSL configured for my j2ee?
Can some one guide me on this?
Appreciate your help.
With regards,
Ravi.D
Edited by: Ravi Devarasetty on Oct 21, 2008 4:48 AM

Hi Ravi,
I am impleting a similar scenario.
Can you please let me know the link to the example of an Online Interactive form with digital signatures.
Thanks,
Vivek

Digital Signatures and Certificates

I use Adobe Profession 8,
I installed a certifcate on my computer (certnew.cer) which has my informations and stuff on it.. ok so far. We have our own certificate server.
When i try to apply a signature on a pdf i created, my name is not on the list (Adobe). The only options i have is to create one or import one (.pfx, .p12). I dont mind importing one but it cant import .cer files.
Testing on another computer, after installing his certificate, his name was shown on the list in adobe.
Is there something that I can be doing wrong?
Is there are way to import a .cer file instead of a .pfx, .p12?
Is there an easy method of converting a .cer to .pfx (.p12) apart from using Windows Drivers Kit?

A cer file doesn't have a private key. It contains a public key and other certificate data. Signing requires a digital ID which includes both the cert/public key and the private key, and these are usually stored in pfx/p12 files.
Self-signed digital IDs are inherently less secure, but they can be made more secure if the recipient verifies the cert "thumbprints" that the signer shares ahead of time. . .
Comprehensive digital signature instructions exist in this doc:
http://www.adobe.com/devnet/acrobat/pdfs/digsig_user_guide.pdf
See also other security related docs on:
http://www.adobe.com/devnet/acrobat/security.html
ben

Digital Signature Authentication

We have developed a form that requires multiple digital signatures. With each signature, it is forwarded on to the next manager via a submit button and the form attaches to a new email. Last week I updated the form and added a new person's email address to the drop-down menu along with their email address. I extended the rights for users and it seemed to be working beautifully. However, as of late yesterday users were getting a message stating they could not sign and some previous signatures had the ? mark as those signatures could not be authenticated. HELP! I don't know if its a problem with the digital signature or I did or didn't do something??

Hi Sandi,
First up, I highly doubt that this is related to the validity of the Reader Extension credential, nor is that something you even need to worry about.
If one of the signatures is in an unknown state (the question mark icon) then there is a prompt to warn the next signer that they are signing a file with signature problems, but it doesn't prevent signing from occurring. Let's get some background information to help figure this out.
First up, do you know what application is being used (e.g. Acrobat or Adobe Reader)? Next, what is the version of the application? Finally, this message that users are getting, can you tell me what it says verbatim?
Thanks,
Steve

Digital Signatures causing performance issue

I have created a form for a two-step process in which the first user will open, enter data, and submit the form for another user to approve. The problem is that during the approver phase, they will digitally sign the form (there are two digital signature fields for each section of the form, the approver is required to sign at least once in order to submit) and then submit, but the process seems to lag for about 20-30 seconds after they click submit.
I understand that the digital signatures may add to the size of the form overall, but is one or two signatures enough to cause a delay?
I have some javascript that I fire at the pre-submit event using AWS_Action to see what the user action is and if the user selects to submit then it will test to see if at least one signature field is signed and valid, if so then changes the signature field type to disabled (I have the signature fields become required type based on certain fields containg data) and submits the form. Is it possible that this script could cause such a delay after the submit? We aren't having any delays when the first user submits the form without digital signatures so I assume this is what is causing the problem.

I expect that the lag may be related to the script you are executing, rather that specifically by the digital signature itself. Are you able to test the form outside of the process to see if the lag remains? Could you change the submit button to a mailto: uri and see how long it takes for the "pre-submit" code to execute?
Regards
Steve

WDJ Adobe digital Signatures

Hello SDN,
I have to implement Digital signatures in my Webdynpro interactive forms. In sdn I found one example related to online Interactive form security but for offline I couldnt find.
In offline scenario, a user will send pdf form to customer or employee etc to fill the form and send it back.
1) Here how a receiver will know that he got the form, from an authorized person?
2) Once the form is filled and send it back, how receiver can validate whether the filled form came from an authorized person?
3) Also how exactly I can use digital signatures? what are the technical requirements for implementing digital signatures?(SSL is mandatory?)
Can some one guide me on this?
Appreciate your help.
With regards,
Ravi

Hi Ravi,
Digital signatures can also be created and verified as of Adobe Reader 5.1. Users can use the Adobe Acrobat Reader to display and print files in PDF format, whose content and appearance correspond to the paper version, on a cross-platform basis. The prerequisites for this are the use of the new Adobe Document Server for Reader Extensions and the replacement of SmartForms by Adobe Acrobat (this is still in development). SSF is not used.
Adobe Document Server for Reader Extensions assign additional usage rights to electronic forms that were created with Adobe Acrobat 5.0 and Adobe Form Designer 5.0. Digital signatures are a type of usage right.
Adobe Acrobat Reader 5.1 can be downloaded free-of-charge from Adobe's Web site, and processes the usage rights that were embedded in PDF forms by the Adobe Document Server for Reader Extensions.
for SSL service go through:[https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/media/uuid/40cacc80-c1fc-2a10-f8b5-9e33b1829552]
for ADS (adobe document services) chk it out;[https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/50fd998b-494f-2b10-c2ab-e3513a857f62]
Digital Signatures and Certification in Forms:
[http://help.sap.com/saphelp_nw04s/helpdata/en/de/eda54dd9194cbcbb62bffaaebfa41d/frameset.htm]
If U have to implement digital certificates, from where I can get these certificates? Do U have to create on my own or need to buy from some party?
chk it out;https://www.bconline.gov.bc.ca/pdf/DigiCertFAQ.pdf
On-demand digital certificates for Adobe AIR applications:
[http://www.net-security.org/secworld.php?id=6628]
Regards,
Khushboo

Validating digital signatures successfull on Win7 but fails on Vista/XP/W2K3

Microsoft has announced (Security Advisory 2880823: Recommendation to discontinue use of SHA-1) that
they will stop recognizing the validity of SHA-1 based certificates after 2016. Microsoft started to sign their files with digital signatures which use the stronger SHA-2 hashing algorithm. For the countersignatures (Time Stamping Authenticode Signatures)
they also use SHA-256. These certificates can be validated fine on Windows 7/8 but can't be validated on Windows Vista, Windows XP and Windows Server 2003R2. The status of certificates in the Certification Path are OK but on the older operating systems the
countersignature seem to be missing... See the forum thread
EMET 4.1 Update 1: 'The digital signature of the object did not verify.' on Vista/XP in the
Enhanced Mitigation Experience Toolkit (EMET) Support Forum for several screenshots.
Can someone explain this behavior and maybe provide a solution?
W. Spu

Hi,
It looks like it is related with this
https://technet.microsoft.com/library/security/2749655
This issue might be caused by a missing timestamp Enhanced Key Usage (EKU) extension during certificate generation and signing of Microsoft core components and software.
Microsoft is aware of an issue involving specific digital certificates that were generated by Microsoft without proper timestamp attributes. These digital certificates were later used to sign some Microsoft core components and software binaries. This
could cause compatibility issues between affected binaries and Microsoft Windows. While this is not a security issue, because the digital signature on files produced and signed by Microsoft will expire prematurely, this issue could adversely impact the ability
to properly install and uninstall affected Microsoft components and security updates.
So have you applied this update on XP\Vista\Server 2003?
http://support.microsoft.com/kb/2749655
This update will help to ensure the continued functionality of all software that was signed with a specific certificate that did not use a timestamp Enhanced Key Usage (EKU) extension. To extend their functionality, WinVerifyTrust will ignore the lack of
a timestamp EKU for these specific X.509 signatures.
Yolanda Zhu
TechNet Community Support

Use of 3rd party Digital Signatures in SAP enviornments

Hi all,
I wanted to inquire about 3rd party digital certificates usability within the SAP environment. for e.g can Verisign digital certificates be used within the SAP environment. Any directions/links on related reading material would be highly appreciated. How certs can help in compliance etc.
ARK.

Hi Lanij,
Check URL http://help.sap.com/saphelp_nw2004s/helpdata/en/37/504b8cbc2848a494facfdc09a359b1/frameset.htm
This gives details on Adobe functions and digital signatures
Also SDN has extensive documentation on Adobe Interactive forms and digital signatures available at
https://www.sdn.sap.com/irj/sdn/adobe
Regards

Possible to validate data entries during Digital Signature?

I have a form that was built from scratch using Adobe LiveCycle Designer ES 8.2. I also have Adobe Acrobat Pro 9.3.2. (WinXP)
I see numerous articles online related to validating user input prior to data submission for an online form via a Submit button, however, I am trying to figure out how to implement the same sort of data validation during the signing of a particular digital signature field in an offline pdf form. Simply, I want to perform data validation during a digital signature instead of when user presses Submit button.
Here's my use-case:
1. Form Originator fills out a large number of data fields and signs form via a CAC cert.
2. Another person will review, possibly edit/add data, and sign another signature block with CAC.
3. Then there is one more final CAC signature on the form before it is completed and then emailed to the right folks for processing.
4. I would like to be able to enforce the population of several Mandatory data fields (at least one Radio button and one text input, possibly others) before the 3rd signature can be applied to the document.
Again, I need to emphasize this is all happening in an offline form, no data submission or database back-end. Also, everything with the digital signatures (and locking up fields afterword) works totally fine, just interested in adding Data Validation capability during Digital Signature.
I am in no way a javascript expert, but I can probably learn from a good example. Any help or guidance is very much appreciated. Thanks...

If you are using SignatureField in the form then you will get two events preSign and postSign which you can use to validate the field input just like you do with a Submit button.
Thanks
Srini

Verifying a Digital Signature

I have a smart card, which I am trying to use to digitally sign some bytes. Then I want to verify the signature using the public key which I can get from the certificate on the smart card.
I am able to send some bytes to the card (using an apdu) and get back some RSA signed bytes. But when I try to verify the signature, it always returns false.
To verify, I do:
X509Certificate x = ... //gets the certificate from the card
Signature sig = Signature.getInstance(x.getSigAlgName()); //"SHA1withRSA"
sig.initVerify(x.getPublicKey());
sig.update(dataBytes, 0, dataBytes.length);
boolean isSigned = sig.verify(signed);
As far as I can tell, this part is good.
I think my problem is related to how I am sending the bytes to the card to get signed. Sending dataBytes in plaintext returns errors regarding length. It seems the signing command I am using on the card wants the data to equal the key length (data=128 byte, key=1024 bit). So what I did next was an attempt to hash the data and then pad it before I send it to the card.
     MessageDigest md = MessageDigest.getInstance("SHA1");
     md.update(dataBytes);
     byte [] digest = md.digest();
     PKCS1SignaturePadding pkcs1 = new PKCS1SignaturePadding(PKCS1SignaturePadding.SHA1);
     byte [] padded = pkcs1.encode(digest, 128);
But after I sign, I try to verify the signature but it still returns false. I'm not sure if I'm doing something wrong or if I'm misunderstanding something (I'm relatively new to digital signatures and smart cards).

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.

Removing signatures in a digital signature field

Hi all, I have a question relating to the topic above that i hope
you guys can help me with;
1) Is it possible to remove digital signatures from form? For instance
if you have a form going thru several approval steps that requires
signatures, and then one step happened to reject, it would be nice to
remove the previous signatures so that they could be re-signed.
2) And finally is there a simpler way to combine digital signatures
and rights management then what was listed in the pdf provided by
Duane (second post from the bottom of the thread)? When creating a policy there is
a checkbox for "Filling in form fields and signing". Is this forsomething else?
Thanks!
Billy

Hi all, came accross a few other problems and hopefully someone can
help me out,
I've managed to place digital signatures on a form and I used a custom renderer to apply a policy for rights management. I used a Document
Form type variable in the process and specified that the form should only be rendered once. Now at some point in my process I wanted to
remove a signature so I tried to use the Clear signature field service. When i run it however i get a stall and an error in my logs
saying "The input PDF is encrypted using APS and could not be opened, hence the operation clearSignatureField can not be performed on Signature Field ConsultantSig. (in the operation : clearSignatureField)"
So figure, ah well, thats cool, i'll just remove the policy as I figured thats what was encrypting it. So i threw in a Remove Policy service and then i get another error in my logs saying that
Cannot coerce object:
<document state="passive" senderVersion="3" persistent="true"
senderPersistent="false" passivated="true" senderPassivated="true"
deserialized="true" senderHostId="127.0.0.1/10.37.129.2/192.168.0.143"
callbackId="0" senderCallbackId="54" callbackRef="IOR:
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
isLocalizable="true" isTransactionBound="false"
defaultDisposalTimeout="600" disposalTimeout="600"
maxInlineSize="65536" defaultMaxInlineSize="65536" inlineSize="0"
contentType="null" length="85284"><cacheId/><localBackendId/
><globalBackendId><DocumentFileID fileName="C:\Adobe\LiveCycle8.2\jboss
\server\all\svcnative\DocumentStorage
\docm1247766543265\66d5bdad216c55badc57fc5b86f44086"/><globalBackendId/
><senderLocalBackendId/><senderGlobalBackendId/><inline/
><senderPullServantJndiName>adobe/idp/DocumentPullServant/
adobejb_server1</senderPullServantJndiName><attributes/></document> of
type: com.adobe.idp.Document to type: class
com.adobe.idp.taskmanager.form.impl.binarycontent.BinaryContentFormInstance
ALC-DSC-119-000: com.adobe.idp.dsc.util.InvalidCoercionException:
Cannot coerce object: <document state="passive" senderVersion="3"
persistent="true" senderPersistent="false" passivated="true"
senderPassivated="true" deserialized="true"
senderHostId="127.0.0.1/10.37.129.2/192.168.0.143" callbackId="0"
senderCallbackId="54" callbackRef="IOR:
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
isLocalizable="true" isTransactionBound="false"
defaultDisposalTimeout="600" disposalTimeout="600"
maxInlineSize="65536" defaultMaxInlineSize="65536" inlineSize="0"
contentType="null" length="85284"><cacheId/><localBackendId/
><globalBackendId><DocumentFileID fileName="C:\Adobe\LiveCycle8.2\jboss
\server\all\svcnative\DocumentStorage
\docm1247766543265\66d5bdad216c55badc57fc5b86f44086"/><globalBackendId/
><senderLocalBackendId/><senderGlobalBackendId/><inline/
><senderPullServantJndiName>adobe/idp/DocumentPullServant/
adobejb_server1</senderPullServantJndiName><attributes/></document>
of type: com.adobe.idp.Document to type: class com.adobe.idp.taskmanager.form.impl.binarycontent.BinaryContentFormInstance
Oh great, a conversion problem when i try to remove the policy! Incidently i get this same conversion problem when i try to remove a signature using the Clear Signature on a form that has NOT had any policy placed on it at all.
So basically, to sum up these are the main issues
1) Can digital signatures be removed from a form that has a policy placed on it, or do i have to remove the policy first?
2) Why am i getting these coercion errors? As i understood it using a Document Form variable is the correct way to go. What should i do to resolve this?
So can anyone shed a little light on this?
Thanks
Billy

Digital Signature In PO (For release)

Dear All,
Please tell me something abt digital sign.
If I relaese PO through me29n then I will have to perform another activity (additional T code) for the digital signature.
Tell me related T-codes for the same.
Thanks in advance.
Regards
Gitesh

Hi AP,
Actually I am not aware of this digital signature scenario.
So Pls tell me in datail.
Regards
Gitesh

PDF Digital Signature for Offer letter

How to enable, pdf digital signature for BI Publisher, we need to enable for the offer letter generated thro' irecruitment .
Please advice
Thanks
Siva

I haven't seen anything related to doing this for iRecruitment but have you checked over the standard BI Publisher support for digital signatures?
17 Support for Digital Signature in PDF Documents
http://download.oracle.com/docs/cd/E10383_01/doc/bip.1013/e10416/bip_digital_sigs.htm

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