tableau

Construct rows and columns from an alphabet with which one can encrypt/decrypt information from

install

npm:

$ npm install tableau

component:

$ component install jwerle/tableau

usage

var tableau = require('tableau')
var alpha = 'abcdefghijklmnopqrstuvwxyz'.split('');
var mat = tableau(alpha);
var out = mat.reduce(function (p, c) {
  return p + c.join(' | ') + '\n';
}, "");
 
console.log(out);

...yields:

a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z
b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a
c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b
d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c
e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d
f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e
g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f
h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g
i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h
j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i
k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j
l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k
m | n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l
n | o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m
o | p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n
p | q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o
q | r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p
r | s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q
s | t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r
t | u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s
u | v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t
v | w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u
w | x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v
x | y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w
y | z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x
z | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y

A command line utility is also available. It can be used as such:

$ tableau
a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z |
b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z | a |
 
...
 

You can set the algorithm with the --algo=expr option:

$ tableau --algo='((l - x) + y) % l'
a | z | y | x | w | v | u | t | s | r | q | p | o | n | m | l | k | j | i | h | g | f | e | d | c | b |
b | a | z | y | x | w | v | u | t | s | r | q | p | o | n | m | l | k | j | i | h | g | f | e | d | c |
 
...
 

You can format the output with the --format=format option:

$ tableau --format='[ %s ]'
[ a ][ b ][ c ][ d ][ e ][ f ][ g ][ h ][ i ][ j ][ k ][ l ][ m ][ n ][ o ][ p ][ q ][ r ][ s ][ t ][ u ][ v ][ w ][ x ][ y ][ z ]
[ b ][ c ][ d ][ e ][ f ][ g ][ h ][ i ][ j ][ k ][ l ][ m ][ n ][ o ][ p ][ q ][ r ][ s ][ t ][ u ][ v ][ w ][ x ][ y ][ z ][ a ]
 
...
 

The alphabet can be overrided with --alpha=alpha option:

$ tableau --alpha=123
1 | 2 | 3 |
2 | 3 | 1 |
3 | 1 | 2 |

api

table(alpha[,algo])

• alpha - Alphabet array of characters to construct a table with
• algo(x, y, l) - Function for determining the character in alpha for each cell in column and row where: x is current column in row, y is current row, and l is row length. The default is return (x + y) % l; which builds a Vigenère Cipher tableau.

license

MIT