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.

Investigator's Guide to Steganography
Investigators Guide to Steganography
ISBN: 0849324335
EAN: 2147483647
Year: 2003
Pages: 220

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