PPT Slide

PDF file encryption

PDF Document

<Encrypted Content>

<<Encryption Dictionary>>

Contains security handler name and supplementary information necessary to obtain encryption key

http://www.elcomsoft.com

Security handler

Takes information from Encryption Dictionary, calculates document encryption key and passes it to PDF Viewer

PDF Viewer

Takes document encryption key, decrypts PDF document and display it on the screen

Screen

Related Internet resources:

http://www.adobe.com/products/acrobat/adobepdf.html

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