#6 BY 6 POLYBIUS SQUARE DECODER MOD#

x Math.floor(letterPosition / 6) + 1 y (letterPosition mod 6) + 1. The following table shows a Polybius square Cipher. The letters i and j are kept together in a single cell. contains 25 cells for 26 alphabets of an English dictionary. The table for English encryption is a 5X5 table i.e. Key to this method is choosing a difficult-to-crack rearrangement. Polybius Square a cipher where each alphanumeric (a-z, 0-9) character is. It is a table that is used for the conversion of letters into numbers. And finally, using the 6ењ† square to turn these newly arranged number pairs into letters again, we arrive at: This also conceals the use of the Polybius square, as we have returned to the original alphabet instead of numbers 1-6 which are more easily identified as resulting from a method such as this.ДЄs a simple example, take the encoded kitten message from above (51334 33624 33122 34142 33162 33214 25234 24215 32) and split it into two by removing every other number:ДҐ 3 4 3 2 3 1 2 4 4 3 1 2 3 1 2 2 4 4 1 3ДЎ 3 3 6 4 3 2 3 1 2 3 6 3 2 4 5 3 2 2 5 2 Alphanumeric characters A-Z 0-9 (total 36) can be encrypted in this system in the place of 25. The first digit is the row number, and the second digit is the column number of following square. As an order 6 square is taken, it can represent 36 characters. Thus if we rearrange the numbers of our encoded message, even splitting up the numbers which compose single letters (Y = 51), we can decode the new sequence of numbers into a string of completely different letters. Replace every letter with a two digit number. Because of this, any sequence of numbers 1-5 or 1-6 can be decoded into the corresponding square's alphabet. This is where the 'square' part comes in. Tap tap tap tap tap tap.Д®ven if you use a keyword-ordered square, someone who can solve a monoalphabetic substitution cipher will probably be able to solve your 41241111153124 without the keyword. Now you can tap out these numbers to your loyal minion while you both sit at your local library, innocently reading last year's almanac and garnering the glaring stares of the other patrons. To encode a message, use the row and column numbers for each letter: Squares may also be arranged with a keyword, such as this one with ' subway': * J is treated the same as I, since there are only 25 spots. The square is a grid of letters which is often 5x5 or 6ењ† (for our alphabet): encrypting to make it more difficult for others to read (aside from your intended recipient) coding to make it easier to transmit (using simple techniques such as flashes of light) A cryptographic tool for accomplishing one or more of the following with an alphabetic message:

6 by 6 polybius square decoder