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Added new codebook page

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This commit is contained in:
Zakary Timson
2026-04-06 15:17:25 -04:00
parent 3cb34a226a
commit b245ae63e6
4 changed files with 522 additions and 155 deletions
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54
client/public/encryption.js
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@@ -1,15 +1,8 @@
// encryption.js
// Phonetic alphabet for table names
const PHONETIC = ['Alpha', 'Bravo', 'Charlie', 'Delta', 'Echo', 'Foxtrot', 'Golf', 'Hotel',
'India', 'Juliet', 'Kilo', 'Lima', 'Mike', 'November', 'Oscar', 'Papa',
'Quebec', 'Romeo', 'Sierra', 'Tango', 'Uniform', 'Victor', 'Whiskey',
'Xray', 'Yankee', 'Zulu'];
const CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
const LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
const PHONETIC = ['Alpha', 'Bravo', 'Charlie', 'Delta', 'Echo', 'Foxtrot', 'Golf', 'Hotel',
'India', 'Juliet', 'Kilo', 'Lima', 'Mike', 'November', 'Oscar', 'Papa', 'Quebec', 'Romeo',
'Sierra', 'Tango', 'Uniform', 'Victor', 'Whiskey', 'Xray', 'Yankee', 'Zulu'];
// Seeded RNG using SHA256
class SeededRandom {
constructor(seed) {
this.seed = seed;
@@ -32,17 +25,15 @@ class SeededRandom {
}
}
// HOTP Generation - 3 digit nonce -> 3 letter code
function generateHOTP(secret, nonce) {
const rng = new SeededRandom(secret + ':hotp:' + nonce);
let code = '';
for (let i = 0; i < 3; i++) {
code += rng.choice(LETTERS.split(''));
for (let i = 0; i < 2; i++) {
code += rng.choice(CHARS.split(''));
}
return code;
}
// Auth Tables
function generateAuthTable(seed, tableIndex) {
const rng = new SeededRandom(seed + ':table:' + tableIndex);
const rows = 'NOPQRSTUVWXYZ'.split('');
@@ -60,12 +51,11 @@ function generateAuthTable(seed, tableIndex) {
return table;
}
// One-Time Pad (for encode/decode)
function generatePad(seed, padKey, length = 60) {
const rng = new SeededRandom(seed + ':pad:' + padKey);
const pad = [];
for (let i = 0; i < length; i++) {
pad.push(rng.nextInt(0, 256));
pad.push(rng.nextInt(0, 1000));
}
return pad;
}
@@ -73,8 +63,8 @@ function generatePad(seed, padKey, length = 60) {
function generatePadDisplay(seed, padKey) {
const rng = new SeededRandom(seed + ':pad:' + padKey);
const groups = [];
for (let i = 0; i < 12; i++) {
const num = rng.nextInt(0, 100000).toString().padStart(5, '0');
for (let i = 0; i < 24; i++) {
const num = rng.nextInt(0, 1000).toString().padStart(3, '0');
groups.push(num);
}
return groups.join(' ');
@@ -84,30 +74,28 @@ function encodeMessage(message, key, padKey, useStream = true) {
const messageBytes = new TextEncoder().encode(message);
const padLength = useStream ? messageBytes.length : 60;
const pad = generatePad(key, padKey, padLength);
const encoded = [];
for (let i = 0; i < messageBytes.length; i++) {
const padByte = pad[i % pad.length];
encoded.push(messageBytes[i] ^ padByte);
const padValue = pad[i % pad.length];
const result = (messageBytes[i] + padValue) % 1000;
encoded.push(result.toString().padStart(3, '0'));
}
return Array.from(encoded).map(b => b.toString(16).padStart(2, '0')).join('');
return encoded.join('');
}
function decodeMessage(encoded, key, padKey, useStream = true) {
const bytes = [];
for (let i = 0; i < encoded.length; i += 2) {
bytes.push(parseInt(encoded.substr(i, 2), 16));
const values = [];
for (let i = 0; i < encoded.length; i += 3) {
values.push(parseInt(encoded.substr(i, 3), 10));
}
const padLength = useStream ? bytes.length : 60;
const padLength = useStream ? values.length : 60;
const pad = generatePad(key, padKey, padLength);
const decoded = [];
for (let i = 0; i < bytes.length; i++) {
const padByte = pad[i % pad.length];
decoded.push(bytes[i] ^ padByte);
for (let i = 0; i < values.length; i++) {
const padValue = pad[i % pad.length];
let result = (values[i] - padValue) % 1000;
if (result < 0) result += 1000;
decoded.push(result);
}
return new TextDecoder().decode(new Uint8Array(decoded));
}