I need a simple breakable cypher

Watch a couple episodes of the Sopranos and you will hear tons of this used.

A good example of a cipher that makes sense either side of coding is Conan Doyle’s Dancing Men, from the Sherlock Holmes story The Adventure of the Dancing Men.

What I mean by ‘makes sense’ here is that it looks just like a bunch of doodles, rather than a nonsensical string of coded characters, demanding decipherment.

I’m pretty sure also, that given a big enough volume of text in which to hide it, and a short enough message, it would be possible to encode a message without rendering the carrier text unreadable or ungrammatical, in the same sort of way that Digimark codes can be embedded in images without noticeably changing them.
OK, it’s perhaps a bit easier in images, because subtly changing the hue or brightness of one pixel here and there can easily go unnoticed, however, I think a similar thing could be done with text, providing that the encoding algorithm knew enough about correct grammar, spelling and word definition - using synonyms and altered (but still valid) phraseology instead of altering pixel colours.

Ah, screwed up, did I? I’m not surprised: I was posting about 4 a.m. after a pleasant evening of wine and crackers and more wine…

More seriously, no matter how often I reminded myself that 0 (zero) = even, my mind kept reading it as O (letter O) = odd. I caught and fixed that mistake many times, obviously not enough.

Glad the cypher works for your game, but I suggest you double or triple check your coded message.

Do you mean, hints in the coded text (Five is my favorite number) (Who’d have thought I’d ever find a use for binary) and such? Or hints outside the message, like leaving a chart with the alphabet and their binary equivalents tucked conspicuously in a book? The latter sounds neater.

Do let us know if your guests turn out to be code breakers.
:slight_smile:

Something like the latter. I’m thinking that they could find cryptic notes scribbled by the guy receiving the code as he got that month’s code over the phone.

I will.

There was an example of this in the Series of Unfortunate Events movie (presumably also in the book, but I haven’t read that one). A charater known for her impeckable spelling left a seeminly-innocuous note for the children, but with mispellings scattered through it. The letters involved in the misspellings speeled out a secret mesage.

CKGSES? I knew it!

Bumping this to give the answer. They weren’t, but they were soooooooo close to solving it that I had all the trouble in the world keeping a straight face when they were working at it.

Too bad! I hope they were able to solve the overall mystery by other routes.

And thanks for letting me know. :slight_smile:

Simple, funny and genuine from just the other day: AN Wilson is a shit.

I imagine that it was just too hard, but if you can figure out this then by all means feel free to use the encryption method.