1. Project Proposal Dan DeBlasio & Brad Mundt CAP 6133, Spring 2008 27 February 2008

2. Plan Model then attempt to improve on “A New Steganographic Method for Data Hiding in Microsoft Word Documents by a Change Tracking Technique” Orientally presented by Tsung-Yuan Liu and Wen-Hsiang Tsai at IEEE Transactions On Information Forensics and Security 2007

3. Basic Overview Hide messages in word documents using the changes tracking feature in word Each changed word has a huffman binary transform

4. Basic Overview Transform normal document to one with mis-spellings or mistakes Make changes, allow word to track them. Using a huffman tree on the original words in the file, create a binary string of the embedded message decode the binary string to get message

5. The quick brown fox jumped over the lazy dog. D

6. The quick borwn fox jumped oevr the lazy dig. D’

7. The quick borwnbrown fox jumped oevrover the lazy digdog. S

8. Huffman Tree Created from the frequency of words in the whole document WordHuffman The11 quick 101 brown10010 foxO011 jumpedO00010 overO001110 lazy100010 dogO1

9. The quick borwnbrown fox jumped oevrover the lazy digdog. Decode WordHuffman The11 quick 101 brown10010 foxO011 jumpedO00010 overO001110 lazy100010 dogO1 1001000 0111001 0x72 0x105 Hi