1. Implementation of Steganographic Techniques Danny Friedheim pd. 2

2. Background ➲ Steganography - the existence of the message is unknown ➲ as opposed to Cryptography - the existence of the message is clear, but it is unreadable ➲ building on existing research in the field

3. Purpose ➲ to hide data in a WAVE file ➲ make data statistically undetectable ➲ extract hidden message with same program

4. Tools ➲ programming languages: C++ ➲ algorithms: original work by me for this purpose, implementing the “least significant bit” substitution method

5. Procedures/Methods ➲ program's methods controlled via command- line arguments ➲ -i (insert) inserts message into WAVE header (or -i2) ➲ -x (extract) finds message in header and displays it (or -x2)‏

6. Procedures ➲ algorithm inserts each character of message into least significant bytes of actual sound data ➲ increases file size by very little, so hard to detect ➲ changes are undetectable by human ear

7. Analysis/Tests ➲ listening to files and seeing whether a difference is evident ➲ file sizes confirm that no data has been lost at this stage

8. Final Results ➲ I can successfully insert a message into the WAVE file data and retrieve it later ➲ can also add whole text files with the -f flag ➲ file size only increases by 4 bytes (int containing length of message)‏

9. Sample Output ➲ Note that the message is successfully written to “output3.wav” and then extracted. Also, the file size increase between the original (“breakbeat.wav”) and the output file is only 4 bytes (an int containing the length of the message).

10. Larger Purpose ➲ real-world applications in covert operations and communication ➲ undetectable steganographic algorithm – huge breakthrough