Linting done

src/core/config/Categories.json

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

src/core/lib/LS47.mjs

@@ -6,21 +6,27 @@
 
 import OperationError from "../errors/OperationError.mjs";
 
-let letters = "_abcdefghijklmnopqrstuvwxyz.0123456789,-+*/:?!'()";
+const letters = "_abcdefghijklmnopqrstuvwxyz.0123456789,-+*/:?!'()";
-let tiles = [];
+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 = [];
+ *
+ */
+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);
+        const [row, col] = findIx(c);
-        k = rotate_down(rotate_right(k, i, col), i, row);
+        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);
+        const pp = findPos(key, p);
-        let mix = find_ix(find_at_pos(key, mp));
+        const mix = findIx(findAtPos(key, mp));
-        let cp = add_pos(pp, mix);
+        let cp = addPos(pp, mix);
-        let c = find_at_pos(key, cp);
+        const c = findAtPos(key, cp);
         ciphertext += c;
-        key = rotate_right(key, pp[0], 1);
+        key = rotateRight(key, pp[0], 1);
-        cp = find_pos(key, c);
+        cp = findPos(key, c);
-        key = rotate_down(key, cp[1], 1);
+        key = rotateDown(key, cp[1], 1);
-        mp = add_pos(mp, find_ix(c));
+        mp = addPos(mp, findIx(c));
     }
     return ciphertext;
 }
 
+/**
+ *
+ */
 function decrypt(key, ciphertext) {
-    check_key(key);
+    checkKey(key);
-    let mp = [0,0];
+    let mp = [0, 0];
-    let plaintext = '';
+    let plaintext = "";
     for (const c of ciphertext) {
-        let cp = find_pos(key, c);
+        let cp = findPos(key, c);
-        let mix = find_ix(find_at_pos(key, mp));
+        const mix = findIx(findAtPos(key, mp));
-        let pp = sub_pos(cp, mix);
+        const pp = subPos(cp, mix);
-        let p = find_at_pos(key, pp);
+        const p = findAtPos(key, pp);
-
         plaintext += p;
-        key = rotate_right(key, pp[0], 1);
+        key = rotateRight(key, pp[0], 1);
-        cp = find_pos(key, c);
+        cp = findPos(key, c);
-        key = rotate_down(key, cp[1], 1);
+        key = rotateDown(key, cp[1], 1);
-        mp = add_pos(mp, find_ix(c));
+        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);
 }

src/core/operations/LS47Decrypt.mjs

@@ -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();
+        LS47.initTiles();
 
-        let key = LS47.derive_key(args[0]);
+        const key = LS47.deriveKey(args[0]);
-        return LS47.decrypt_pad(key, input, this.padding_size);
+        return LS47.decryptPad(key, input, this.paddingSize);
     }
 
 }

src/core/operations/LS47Encrypt.mjs

@@ -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
@@ -50,12 +50,12 @@ class LS47Encrypt extends Operation {
      */
     run(input, args) {
 
-        this.padding_size = parseInt(args[1], 10);
+        this.paddingSize = parseInt(args[1], 10);
 
-        LS47.init_tiles();
+        LS47.initTiles();
 
-        let key = LS47.derive_key(args[0]);
+        const key = LS47.deriveKey(args[0]);
-        return LS47.encrypt_pad(key, input, args[2], this.padding_size);
+        return LS47.encryptPad(key, input, args[2], this.paddingSize);
     }
 
 }