Baran Comments inline:
On 28/07/2014 17:39, "baran_H" <[email protected]> wrote: >Hello, > >i have been always gready to find an interesting use for Semantic Web. Now >i want to present you something where i don't know exactly how original it >is: > >You have an app to tip a very secret message in the dataset of a given >ontology, 'air force' for example. The app asks you after a 'controlled >input', to which ontology should i transform it? You choose football for >example. The app suggests a text about football, you read and accept it or >you change the text how you like it without changing special colored >expressions. Then you send your 'football text' to your friend. No >observation of the world can check that it is an encrypted message, but >your friend can read the secret message when he/she has the same app. You've basically just described a RDF based steganography technique (http://en.wikipedia.org/wiki/Steganography) I.e. the art or practise of concealing a message within another message. One problem with steganography is that anyone with the app can read the message because unlike cryptography there isn't a shared key involved. So if your malicious eavesdropper has the app then they too can read the original message. > >For the case that both computers are already infected: Both have a second >computer inline with a selfcontrolled embedded connection. I'm not a security expert but that above statement doesn't fill me with confidence. If a machine is compromised then it is compromised, even if the malicious eavesdropper can't read the original message they can likely get a copy of the app at which point they can decode the message anyway. > >This is basically mapping ontologies to each other and the practical >programming of this staff is finally trivial, would i say, i thought a lot >about it, also for the case of a second comp in line... True, though I would say trivial typically means insecure. There is a reason information security is hard and even the experts can get it horribly wrong e.g. OpenSSL and Heartbleed Rob > >Now you can ask, what Jena have to do with this: Speaking from experience: >This is the best place in the web to put such a posting, would i say. And >i have a somewhat dubious hint, that such concepts are practiced already. >Everything is already thought anyway, but i am very curious about comments >of interested or better informed users... > >thanks, baran.
