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Linting done

This commit is contained in:
n1073645 2020-01-28 09:33:32 +00:00
parent 0259ed8314
commit 5cdd062ed9
4 changed files with 112 additions and 69 deletions
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2
src/core/config/Categories.json
View File

@ -75,6 +75,8 @@
"DES Decrypt",
"Triple DES Encrypt",
"Triple DES Decrypt",
"LS47 Encrypt",
"LS47 Decrypt",
"RC2 Encrypt",
"RC2 Decrypt",
"RC4",

153
src/core/lib/LS47.mjs
View File

@ -6,21 +6,27 @@
import OperationError from "../errors/OperationError.mjs";
let letters = "_abcdefghijklmnopqrstuvwxyz.0123456789,-+*/:?!'()";
let tiles = [];
const letters = "_abcdefghijklmnopqrstuvwxyz.0123456789,-+*/:?!'()";
const tiles = [];
export function init_tiles() {
/**
*
*/
export function initTiles() {
for (let i = 0; i < 49; i++)
tiles.push([letters.charAt(i), [Math.floor(i/7), i % 7]]);
}
function rotate_down(key, col, n) {
let lines = [];
for (let i = 0; i < 7; i++)
/**
*
*/
function rotateDown(key, col, n) {
const lines = [];
for (let i = 0; i < 7; i++)
lines.push(key.slice(i*7, (i + 1) * 7));
let lefts = [];
const lefts = [];
let mids = [];
let rights = [];
const rights = [];
lines.forEach((element) => {
lefts.push(element.slice(0, col));
mids.push(element.charAt(col));
@ -34,37 +40,49 @@ function rotate_down(key, col, n) {
return result;
}
function rotate_right(key, row, n) {
let mid = key.slice(row * 7, (row + 1) * 7);
/**
*
*/
function rotateRight(key, row, n) {
const mid = key.slice(row * 7, (row + 1) * 7);
n = (7 - n % 7) % 7;
return key.slice(0, 7 * row) + mid.slice(n) + mid.slice(0, n) + key.slice(7 * (row + 1));
}
function find_ix(letter) {
/**
*
*/
function findIx(letter) {
for (let i = 0; i < tiles.length; i++)
if (tiles[i][0] === letter)
return tiles[i][1];
throw new OperationError("Letter " + letter + " is not included in LS47");
}
export function derive_key(password) {
/**
*
*/
export function deriveKey(password) {
let i = 0;
let k = letters;
for (const c of password) {
let [row, col] = find_ix(c);
k = rotate_down(rotate_right(k, i, col), i, row);
const [row, col] = findIx(c);
k = rotateDown(rotateRight(k, i, col), i, row);
i = (i + 1) % 7;
}
return k;
}
function check_key(key) {
/**
*
*/
function checkKey(key) {
if (key.length !== letters.length)
throw new OperationError("Wrong key size");
let counts = new Array();
const counts = new Array();
for (let i = 0; i < letters.length; i++)
counts[letters.charAt(i)] = 0;
for (const elem of letters){
for (const elem of letters) {
if (letters.indexOf(elem) === -1)
throw new OperationError("Letter " + elem + " not in LS47!");
counts[elem]++;
@ -73,76 +91,99 @@ function check_key(key) {
}
}
function find_pos (key, letter) {
let index = key.indexOf(letter);
/**
*
*/
function findPos (key, letter) {
const index = key.indexOf(letter);
if (index >= 0 && index < 49)
return [Math.floor(index/7), index%7];
throw new OperationError("Letter " + letter + " is not in the key!");
}
function find_at_pos(key, coord) {
/**
*
*/
function findAtPos(key, coord) {
return key.charAt(coord[1] + (coord[0] * 7));
}
function add_pos(a, b) {
/**
*
*/
function addPos(a, b) {
return [(a[0] + b[0]) % 7, (a[1] + b[1]) % 7];
}
function sub_pos(a, b) {
let asub = a[0] - b[0];
let bsub = a[1] - b[1];
/**
*
*/
function subPos(a, b) {
const asub = a[0] - b[0];
const bsub = a[1] - b[1];
return [asub - (Math.floor(asub/7) * 7), bsub - (Math.floor(bsub/7) * 7)];
}
/**
*
*/
function encrypt(key, plaintext) {
check_key(key);
checkKey(key);
let mp = [0, 0];
let ciphertext = '';
let ciphertext = "";
for (const p of plaintext) {
let pp = find_pos(key, p);
let mix = find_ix(find_at_pos(key, mp));
let cp = add_pos(pp, mix);
let c = find_at_pos(key, cp);
const pp = findPos(key, p);
const mix = findIx(findAtPos(key, mp));
let cp = addPos(pp, mix);
const c = findAtPos(key, cp);
ciphertext += c;
key = rotate_right(key, pp[0], 1);
cp = find_pos(key, c);
key = rotate_down(key, cp[1], 1);
mp = add_pos(mp, find_ix(c));
key = rotateRight(key, pp[0], 1);
cp = findPos(key, c);
key = rotateDown(key, cp[1], 1);
mp = addPos(mp, findIx(c));
}
return ciphertext;
}
/**
*
*/
function decrypt(key, ciphertext) {
check_key(key);
let mp = [0,0];
let plaintext = '';
checkKey(key);
let mp = [0, 0];
let plaintext = "";
for (const c of ciphertext) {
let cp = find_pos(key, c);
let mix = find_ix(find_at_pos(key, mp));
let pp = sub_pos(cp, mix);
let p = find_at_pos(key, pp);
let cp = findPos(key, c);
const mix = findIx(findAtPos(key, mp));
const pp = subPos(cp, mix);
const p = findAtPos(key, pp);
plaintext += p;
key = rotate_right(key, pp[0], 1);
cp = find_pos(key, c);
key = rotate_down(key, cp[1], 1);
mp = add_pos(mp, find_ix(c));
key = rotateRight(key, pp[0], 1);
cp = findPos(key, c);
key = rotateDown(key, cp[1], 1);
mp = addPos(mp, findIx(c));
}
return plaintext;
}
export function encrypt_pad(key, plaintext, signature, padding_size) {
init_tiles();
check_key(key);
/**
*
*/
export function encryptPad(key, plaintext, signature, paddingSize) {
initTiles();
checkKey(key);
let padding = "";
for (let i = 0; i < padding_size; i++) {
for (let i = 0; i < paddingSize; i++) {
padding += letters.charAt(Math.floor(Math.random() * letters.length));
}
return encrypt(key, padding+plaintext+'---'+signature);
return encrypt(key, padding+plaintext+"---"+signature);
}
export function decrypt_pad(key, ciphertext, padding_size) {
init_tiles();
check_key(key);
return decrypt(key, ciphertext).slice(padding_size);
}
/**
*
*/
export function decryptPad(key, ciphertext, paddingSize) {
initTiles();
checkKey(key);
return decrypt(key, ciphertext).slice(paddingSize);
}

12
src/core/operations/LS47Decrypt.mjs
View File

@ -5,7 +5,7 @@
*/
import Operation from "../Operation.mjs";
import * as LS47 from "../lib/LS47.mjs"
import * as LS47 from "../lib/LS47.mjs";
/**
* LS47 Decrypt operation
@ -45,12 +45,12 @@ class LS47Decrypt extends Operation {
*/
run(input, args) {
this.padding_size = parseInt(args[1], 10);
this.paddingSize = parseInt(args[1], 10);
LS47.init_tiles();
let key = LS47.derive_key(args[0]);
return LS47.decrypt_pad(key, input, this.padding_size);
LS47.initTiles();
const key = LS47.deriveKey(args[0]);
return LS47.decryptPad(key, input, this.paddingSize);
}
}

14
src/core/operations/LS47Encrypt.mjs
View File

@ -5,7 +5,7 @@
*/
import Operation from "../Operation.mjs";
import * as LS47 from "../lib/LS47.mjs"
import * as LS47 from "../lib/LS47.mjs";
/**
* LS47 Encrypt operation
@ -49,13 +49,13 @@ class LS47Encrypt extends Operation {
* @returns {string}
*/
run(input, args) {
this.padding_size = parseInt(args[1], 10);
LS47.init_tiles();
let key = LS47.derive_key(args[0]);
return LS47.encrypt_pad(key, input, args[2], this.padding_size);
this.paddingSize = parseInt(args[1], 10);
LS47.initTiles();
const key = LS47.deriveKey(args[0]);
return LS47.encryptPad(key, input, args[2], this.paddingSize);
}
}