Manuals

 

FPDI_Protection_128 - Introduction

This script allows to protect the resulting PDF, created with FPDF/FPDI, that is to say prevent people from copying its content, print it or modify it with up to 128 bit. The script supports the standard algorithm RC4 and the AES (Advanced Encryption Standard) algorithm for encryption.

Note: protecting a document requires to encrypt it, which increases the processing time a lot. This can cause a PHP time-out in some cases, especially if the document contains images or fonts.