I have created from Word 2003 an encripted file using pdfcreator 1.3.2 with maximum security (pdf 1.6 AES 128 bit, no permission at all, no password to open file).
Surprisingly, I can extract images from such file using NitroReader 184.108.40.206. Extraction or copying is not allowed on text. Security settings report that no operation is allowed.
Is encription only working on text? If the answer is yes, how is possible to encript images in pdf?