neizod/LICENSE.txt

## README.md

      
    Raw
  

              README.md
            
          
    The Substitution Cipher

112b. Encrypt and decrypt text using substitution cipher method.
How to Use

Invoke function using 3 arguments.
1st arg (string) ... Input pain/cipher text. Its can contain only English alphabet [a..z], no punctuation.
2nd arg (number) ... The key text. Contain each of a lower case English alphabet [a..z]{26}.
3rd arg (number) ... Direction of encrypt/decrypt. 1 for encryption and 0 for decryption.

Let's Talk

While Affine Cipher is a very-hard-to-understand, nearly-mind-explosive-on-implement; Substitution Cipher provide a much-easier-to-learn, no-queer-coding-require. Above of all, substitution cipher had fully cover on what affine cipher had already done!
Nevertheless, I love affine cipher the most! Because its remind me how wonderful mathematics is.
Credit

124b -> 112b  williammalo


## annotated.js
function(
    t,      // input text string
    k,      // input key string
    d,      // direction
            // placeholder
    i,      // iterator
    o,      // output
){
    o="";               // set output to empty string.
    for(i in t)         // loop through all input string.
        o+=d?           // check if encrypt or decrypt? and map string <-> key.
            k[t.charCodeAt(i)-97]:
            String.fromCharCode(k.indexOf(t[i])+97);
    return o
}

## index.js
function(t,k,d,i,o){o="";for(i in t)o+=d?k[t.charCodeAt(i)-97]:String.fromCharCode(k.indexOf(t[i])+97);return o}

## LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 Nattawut Phetmak <http://about.me/neizod>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.

## package.json
{
  "name": "substitutionCipher",

  "description": "this will encrypt/decrypt your text using the substitution method.",

  "keywords": [
    "substitution ",
    "cipher",
    "encryption",
    "decryption",
    "string"
  ]
}

## test.html
<!DOCTYPE html>
<title>The Substitution Cipher</title>
<div>Expected value: <b>zebrascdfghijklmnopqtuvwxy, siaazqlkbavazoarfpbluaoar, ulhglwlfdcrrmpelbcdliuci</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
  // write a small example that shows off the API for your example
  // and tests it in one fell swoop.

  var subst = function(t,k,d,i,o){o="";for(i in t)o+=d?k[t.charCodeAt(i)-97]:String.fromCharCode(k.indexOf(t[i])+97);return o}

  var k1="zebrascdfghijklmnopqtuvwxy";
  var k2="iveflntwrdgombxypsujhackzq";

  document.getElementById( "ret" ).innerHTML = [subst("abcdefghijklmnopqrstuvwxyz", k1, 1),
                                                subst("fleeatoncewearediscovered", k1, 1),
                                                subst("howtoconfessmyloveforher", k2, 0)];
</script>
	function(
	t, // input text string
	k, // input key string
	d, // direction
	// placeholder
	i, // iterator
	o, // output
	){
	o=""; // set output to empty string.
	for(i in t) // loop through all input string.
	o+=d? // check if encrypt or decrypt? and map string <-> key.
	k[t.charCodeAt(i)-97]:
	String.fromCharCode(k.indexOf(t[i])+97);
	return o
	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Nattawut Phetmak <http://about.me/neizod>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "substitutionCipher",

	"description": "this will encrypt/decrypt your text using the substitution method.",

	"keywords": [
	"substitution ",
	"cipher",
	"encryption",
	"decryption",
	"string"
	]
	}
	<!DOCTYPE html>
	<title>The Substitution Cipher</title>
	<div>Expected value: <b>zebrascdfghijklmnopqtuvwxy, siaazqlkbavazoarfpbluaoar, ulhglwlfdcrrmpelbcdliuci</b></div>
	<div>Actual value: <b id="ret"></b></div>
	<script>
	// write a small example that shows off the API for your example
	// and tests it in one fell swoop.

	var subst = function(t,k,d,i,o){o="";for(i in t)o+=d?k[t.charCodeAt(i)-97]:String.fromCharCode(k.indexOf(t[i])+97);return o}

	var k1="zebrascdfghijklmnopqtuvwxy";
	var k2="iveflntwrdgombxypsujhackzq";

	document.getElementById( "ret" ).innerHTML = [subst("abcdefghijklmnopqrstuvwxyz", k1, 1),
	subst("fleeatoncewearediscovered", k1, 1),
	subst("howtoconfessmyloveforher", k2, 0)];
	</script>