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Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Communication is a part of everyday life. The more sensitive information we handle, the more interesting the question around security of your information becomes. There are two ways of handling security around the information you want to communicate, either you control the means by which you are communicating. Or you control the way you communicate, making you able to use existing communication channels. Existing methods within cryptography enables two parties to communicate information securely. But it is not without a downside, anyone who manages to see your communication knows that you are hiding something. This is where Linguistic steganography comes in to play. Linguistic steganography is an attempt to solve the problem of suspicion, by concealing hidden messages in plain text. This report attempts to give the reader an insight to three different methods within linguistic steganography, as well as discussing the strengths and weaknesses. These methods are Mimicry, the use of synonyms and grammatical changes. The discussion of these methods leads to a simple implementation of a modern version of Mimicry, applicable to the current daily communication by short messages such as SMS. The discussions also lead to a theoretical way of implementing an automatic way of using synonyms as well as acknowledging the fact the method of grammatical changes is a complex system. The general conclusion is that the area of linguistic steganography needs to be explored further.
Place, publisher, year, edition, pages
Kandidatexjobb CSC, K13012
IdentifiersURN: urn:nbn:se:kth:diva-134839OAI: oai:DiVA.org:kth-134839DiVA: diva2:668311
Master of Science in Engineering - Computer Science and Technology