Mr lowe wrote:Using that update can you run a scytale 15, and 19 through it.

Mr lowe,

My skytale implementation only works with periods that do not have a common divisor with the length of the cipher. For instance, period 15 is divisible by 5 and so is 340. This means that without extra reading rule the transposition will run into itself at one point without having gone through the whole cipher. Another way to accommodate is to increase or decrease the cipher length to a number that does not share factors with 15. 338 or 341. But it is then the question what character is removed, or where a character is added, and that matters allot. I am looking to create a small database of maximum 100 variations of the 340 that could be considered as candidate untranspositions within the period 15/19 hypothesis.

Perhaps you could fashion together a period 15 skytale for the test? And if you have a couple of more things of your own that wouldn't hurt either. And please, anyone else, feel free to contribute.