Using Adobe LiveCycle Designer ES and secure parts of form using signatures.

Question

Hi to all ...
I have upgraded to new LiveCycle Desinger 8.1 few days ago, and still do not know all the new features.
I was requested to develop new LiveCycle Form, but this time it has to be secured by Digital Signatures or what every appropriate method.
The form has exactly 2 sections and 2 Digital Signatures:
1. The first section/part is to be filled by the Staff (let us call him the Authoring Staff).
Any one can fill the first part.
After the first part is signed, the Data Entry on the first part should be locked, and no one on Earth should be able to change the data on the first part. Only the signer of the first part is allowed to update/clear the signature but only and only of the Second part is not yet signed.
The staff should not be allowed to sign the form unless all mandatory fields and other validation logic is statisfied.
Only the Signer of the Form and special authorized staff/group of staff will be allowed to open the form. Let us call them Group01.
2. The second section/part is to be filled by special authorized staff/group (say Group02), they are basicall HR Staff (this is a secret).
The second part can only be filled if the first part is filled and signed by the Authoring Staff.
The second part can be signed only if the validation logic on the second part is true (no errors, and all mandatory fields are filled).
Once the second part is signed, the first part the the second part should be locked, and no one on earth should be able to change anything on the form.
Only the signer of the form should be able to clear the signature of the 2nd part and make any changes requried.
If the 2nd part is signed, the Authoring Staff should not be able to change anything on the form.
*****End of Requirements.*****
I have just started, and I am requested to desing the form and implement the required security in 10 days only.
Can any one please help me ?
I am doing my research now.
Thank you.
Tarek.

Answer 1

Dear Dfoto,
Thank you so much for being so kind to spend the effort and reply back, I though my question was left behind the sun... but now I am very happy in deed.
To be more specific, the Form has 2 parts. The first part "Subform1" any one can fill and sign.
The second part "Subform2", only certain users can fill and sign.
I think I found a very strong lead to my solution, when I was playing with LiveCycle Desinger few days ago.
On the Singature Field Advanced Setting, there is a place you can attach the public part of a certificate (Digital Signature) of any user, one or more.
In this part, you tell LC that only those users "signing parties" can sign the field. I tested it and it worked.
Now, if I can use this feature via JavaScript to find out if the user who is filling the form, can sign this field, then he can fill the form. If he cannot sign the field, then he cannot fill the form. I can do that by setting the "access" property of the Subform. Another solution is that I can prevent the user from hitting the "Submit" button unless he signes the designated Signature Field.
I have another small issue:
I found out that if the Signature field is part of a repeating dynamic Subform, it will not work during run-time. Very bad in deed. While I cannot understand why ?, I tool this as "By Desing" feature.
Now, if the Signature is locking parts of forms which has dynamic content (repeating subforms), it will always show somthing like "Signature is corrupted or form was changed after it was signed".
Is this normal ? Is there a way to control Dynamic Forms using Digital Signatures without such annoying issues ?
Thank you.