Alamantus/otp-generator
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Code Issues Releases Wiki Activity

Add a way to generate any-length pad

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This commit is contained in:
Robbie Antenesse 2018-02-21 10:03:57 -07:00 • committed by Robbie Antenesse
parent a39f39c805
commit de69f9e9b6
2 changed files with 69 additions and 25 deletions
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44
index.html
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@ -20,7 +20,40 @@
<div class="section">
<div class="container">
<div class="columns">
<div class="column">
<div class="column is-one-third">
<h2 class="title">
Generate a One-Time Pad
</h2>
<div class="field has-addons">
<div class="control">
<input class="input" type="number" id="padLength" placeholder="Length">
</div>
<div class="control">
<a class="button" id="generatePad">
<span>
Generate Pad
</span>
<span class="icon">
<i class="fa fa-lock"></i>
</span>
</a>
</div>
</div>
<div class="columns">
<div class="column">
<label class="label">One-Time Pad</label>
<div class="box">
<pre id="generatedPad"></pre>
</div>
</div>
</div>
</div>
<div class="column is-one-third">
<h2 class="title">
Encrypt a Message
</h2>
<div class="field">
<label class="label">
Your Message
@ -55,13 +88,16 @@
<div class="column">
<label class="label">Encrypted Message</label>
<div class="box">
<pre id="encrypted"></pre>
<pre id="encrypted" style="width:100%;line-break"></pre>
</div>
</div>
</div>
</div>
<div class="column">
<div class="column is-one-third">
<h2 class="title">
Encrypt a Message
</h2>
<div class="field">
<label class="label">
Their Message
@ -96,7 +132,7 @@
<div class="column">
<label class="label">Decrypted Message</label>
<div class="box">
<pre id="decrypted"></pre>
<pre id="decrypted" style="width:100%;line-break"></pre>
</div>
</div>
</div>

50
index.js
View file

@ -5,7 +5,7 @@ const CHARS = [
'&', '$',
];
const generatePad = (length) => {
export const generatePad = (length) => {
const pad = [];
for (let i = 0; i < length; i++) {
const letter = Math.floor(Math.random() * CHARS.length);
@ -41,25 +41,33 @@ export const decrypt = (string, pad) => {
}).join('').replace(/\&/g, ' ').replace(/\$/g, '-');
}
document.getElementById('encryptInput').onclick = () => {
const error = document.getElementById('inputError');
const input = document.getElementById('input').value;
const inputPad = stripString(document.getElementById('inputPad').value).toUpperCase();
const pad = inputPad !== '' ? inputPad.split('') : null;
if (pad !== null && pad.length < input.length) {
document.getElementById('inputPad').value = pad.join('');
error.innerHTML = 'The pad must be at least as long as the input';
} else {
error.innerHTML = '';
const encryption = encrypt(input, pad);
document.getElementById('inputPad').value = encryption.oneTimePad.join('');
document.getElementById('encrypted').innerHTML = encryption.encryptedMessage;
window.onload = () => {
document.getElementById('encryptInput').onclick = () => {
const error = document.getElementById('inputError');
const input = document.getElementById('input').value;
const inputPad = stripString(document.getElementById('inputPad').value).toUpperCase();
const pad = inputPad !== '' ? inputPad.split('') : null;
if (pad !== null && pad.length < input.length) {
document.getElementById('inputPad').value = pad.join('');
error.innerHTML = 'The pad must be at least as long as the input';
} else {
error.innerHTML = '';
const encryption = encrypt(input, pad);
document.getElementById('inputPad').value = encryption.oneTimePad.join('');
document.getElementById('encrypted').innerHTML = encryption.encryptedMessage;
}
}
document.getElementById('decryptInput').onclick = () => {
const input = document.getElementById('encryptedInput').value;
const pad = document.getElementById('encryptedInputPad').value.split('');
const output = decrypt(input, pad);
document.getElementById('decrypted').innerHTML = output;
}
document.getElementById('generatePad').onclick = () => {
const input = parseInt(document.getElementById('padLength').value, 10);
const output = generatePad(input);
document.getElementById('generatedPad').innerHTML = output.join('');
}
}
document.getElementById('decryptInput').onclick = () => {
const input = document.getElementById('encryptedInput').value;
const pad = document.getElementById('encryptedInputPad').value.split('');
const output = decrypt(input, pad);
document.getElementById('decrypted').innerHTML = output;
}