Why would you want to remove a signature?   And do you have the rights to do so 
(eg. Are you the signatory)?

After removing the field, be sure to do a FULL save on the PDF and not an 
incremental one.

Leonard


On 1/22/09 12:29 PM, "Starke, Rico" <rico.sta...@gl-group.com> wrote:

Hi,

I have a problem removing a signature from a pdf file with iText. Can someone 
help me?

I remove the signature with acroFields.removeField and write the document back 
to disk using the pdfstamper. Now the signature is gone (acrobat says there are 
no signatures in the newly written document), but I still cannot change the 
security policy of the document.

What I want to do is to open File->Properties in Acrobat Pro v8, go to the 
Security tab and choose "Password Protection" in the combobox. Yet, Acrobat 
shows a message "the security policy cannot be changed because the document is 
signed or certified", although there are no security restrictions applied to 
the document (as displayed on the Security of the properties dialog), and 
although all signatures have been removed.

Note: I'm using the German version of Acrobat, so some of my translations given 
above may not match the english version exactly.

Any ideas how to remove this remainder of the signature with itext? I can 
provide more code snippets, acrobat screenshots or example pdf files if that 
helps.

Kind regards,

 Rico Starke



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