Stamp already encrypted PDF | modify protected PDF documents with PHP

E-book Shops

Create a social DRM: Use the SetaPDF-Stamper API for on-the-fly personalization of your PDF e-books to stem unauthorized redistribution.

Sales Partner Material

Setup your own application for providing personalized material for sales partners.

Affiliate Marketing

Release stamped PDF documents to your affiliate partners with prepared affiliate links.

...and many more

Stamp already encrypted and protected PDF documents

Sometimes it is neccesary to encrypt PDF documents to prevent changes or extracting content of them. As encryption is a high performance task the SetaPDF-Stamper API Pro version offers the facility to stamp already encrypted documents without re-encrypting the whole document but just the new content. Which leads into a performance boost when delivering stamped and encrypted documents.

This solution is perfect if you offer PDF documents that were not encrypted with a user password (the password that is needed to open the document) but the encryption "just" restricts features like copy&paste.

Select a file:

	Example-PDF-1-enc-40bit-no-userpw.pdf Owner password: magic, User password: none, Encryption: RC4 40 bit
	Example-PDF-1-enc-128bit-no-userpw.pdf Owner password: magic, User password: none, Encryption: RC4 128 bit
	Example-PDF-1-enc-40bit-userpw.pdf Owner password: magic, User password: spooky, Encryption: RC4 40 bit
	Example-PDF-1-enc-128bit-userpw.pdf Owner password: magic, User password: spooky, Encryption: RC4 128 bit
	Example-PDF-2-enc-40bit-no-userpw.pdf Owner password: magic, User password: none, Encryption: RC4 40 bit
	Example-PDF-2-enc-128bit-no-userpw.pdf Owner password: magic, User password: none, Encryption: RC4 128 bit
	Example-PDF-2-enc-40bit-userpw.pdf Owner password: magic, User password: spooky, Encryption: RC4 40 bit
	Example-PDF-2-enc-128bit-userpw.pdf Owner password: magic, User password: spooky, Encryption: RC4 128 bit

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PHP & PDF Solutions

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Possible Applications

E-book Shops

Sales Partner Material

Affiliate Marketing

Stamp already encrypted and protected PDF documents

The encrypted document was stamped!