Multiple PDF Singatures on same PDF

What steps will reproduce the problem?
1. Open Alfresco Explore 
2. Sign with diferent Key Store Files, in a serial mode.(Hidden Signature)

What is the expected output? What do you see instead?
The expected output: All signatures should be valid.

After the signatures have been applied, when the pdf is open with adobe reader 
or Nitro Pro 8 ,it says that the last signature made is valid (No changes were 
made to the document) but the previous signatures are stated as invalid.

What version of the product are you using? On what operating system?
pdf toolkit 1.1.1-beta1
Alfresco Community 4.2c , Windows 7

Please provide any additional information below.

Original issue reported on code.google.com by maneafla...@gmail.com on 11 Jun 2013 at 1:19

Attachments:

[Multiple hidden Signature on a Pdf(output) .png](https://storage.googleapis.com/google-code-attachments/alfresco-pdf-toolkit/issue-27/comment-0/Multiple hidden Signature on a Pdf%28output%29 .png)

teqnology / alfresco-pdf-toolkit

Multiple PDF Singatures on same PDF #27