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Investigators Guide to Steganography - page 115

KPK File

KPK File provides security for your sensitive files by encrypting and hiding them. It has a steganography option, allowing the user to bury an encrypted file within another still-working file, such as a Microsoft Word document or a bitmap image. KPK File can also create secret folders that are impossible to access without the proper password.

Magic Folders

Magic Folders is a shareware program that makes a folder/directory and all files in that folder completely invisible to anyone without the correct password. Once made invisible, the folders cannot be viewed , modified, deleted, or run. The program also allows multiple accounts, so many different invisible folders can exist on one machine, and these folders can be shared as needed.

MASKER

MASKER is a steganography and encryption program that supports several high-performance coding algorithms, including Cast-256, Blowfish-256, Rijndael-256, and Twofish-256. The cover image can be an audio file, a program, or a video file. Once the hidden information is embedded, the file is still fully functional. Additionally, files can be compressed for network transmission.

MergeStreams

This utility allows you to merge Word and Excel streams. This technique can be used to hide an Excel document inside a Word document or vice versa. The program does not implement cryptography and by itself is not very secure.

MP3 Stego

MP3Stego, or MP3Steno as it is also called, will hide information in MP3 files during the compression process. Data is first compressed, encrypted, and then data is hidden in the MP3 bitstream. Although MP3Stego has been written with steganographic applications in mind, it could also be used as a watermarking system for MP3s. An opponent could uncompress the bitstream and recompress it, deleting the hidden information, but at the expense of severe quality loss.

NICETEXT

NICETEXT uses the technique of linguistic steganography in a very inventive way. The goal of NICETEXT is to provide a program that can transform ciphertext (encrypted text) into text that looks like natural language while still providing a cover for the original ciphertext . An added benefit of this type of program is that it can be applied to many different languages. The software works by sampling certain aspects of writing by style or by using context-free-grammars (CFG).

NICETEXT relies on large code dictionaries consisting of words categorized by type. A style source selects sequences of types independent of the ciphertext. NICETEXT transforms ciphertext into sentences by selecting words with the matching codes for the proper type categories in the dictionary table. The style source defines case sensitivity, punctuation, and white space independent of the input ciphertext. The reverse process simply parses individual words from the generated text and uses codes from the dictionary table to recreate the ciphertext.