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... To hide your activities, you should really spend all your time online looking at cats and dogs on facebook and youtube and make it clear that you have absolutely no time left in your life to do anything else. I think there are a lot of would-be terrorists out there who are playing that very game in order to hide their would-do activities which they will never have time to act on.
jihadist relied on Jesus-era encryption ...Woolwich Crown Court was told that Bangladeshi Islamic activists who were in touch with Karim had rejected the use of common modern systems such as PGP or TrueCrypt in favour of a system which used Excel transposition tables, which they had invented themselves.But the underlying code system they used predated Excel by two millennia. The single-letter substitution cipher they used was invented by the ancient Greeks and had been used and described by Julius Caesar in 55BC.
Some of them need to spend some time Googling "cryptography" ...
I understand that the German military and intelligence services are now using typewriters and sealed envelopes - that way, nobody else can read your correspondence because there's only one copy, it's obvious if it has been intercepted, and you don't need to encode it at all. And, to quote Spike Milligan (who foresaw this many years ago) they cunningly write it all in German so nobody else can read it!
Quote from: RD on 25/10/2014 07:47:42Some of them need to spend some time Googling "cryptography" ...Any system of encryption that you can buy from somewhere could be supplied by the people who want to read your messages. A safer way would be to hide the data in images, but compression interferes with that, so you need to draw attention to yourself by exchanging BMP or WAV files, making little changes to the data that don't show up when you display or play the file. Even then though, the data will still have a signature about it of having been tampered with and someone will quickly crack your system. The only really safe way to do things is to exchange messages via God directly and let him pass them on. Only infidels would work any other way, because believers know that if they pass a message to God through prayer, God will pass it on to the person who needs to receive it.