6.7.0

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "cyberchef",
-  "version": "6.6.2",
+  "version": "6.7.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cyberchef",
-  "version": "6.6.2",
+  "version": "6.7.0",
   "description": "The Cyber Swiss Army Knife for encryption, encoding, compression and data analysis.",
   "author": "n1474335 <n1474335@gmail.com>",
   "homepage": "https://gchq.github.io/CyberChef",

src/core/config/Categories.js

@@ -302,6 +302,7 @@ const Categories = [
         ops: [
             "Entropy",
             "Frequency distribution",
+            "Chi Square",
             "Detect File Type",
             "Scan for Embedded Files",
             "Disassemble x86",

src/core/config/OperationConfig.js

@@ -3205,6 +3205,13 @@ const OperationConfig = {
             }
         ]
     },
+    "Chi Square": {
+        module: "Default",
+        description: "Calculates the Chi Square distribution of values.",
+        inputType: "byteArray",
+        outputType: "number",
+        args: []
+    },
     "Numberwang": {
         module: "Default",
         description: "Based on the popular gameshow by Mitchell and Webb.",
@@ -3840,7 +3847,7 @@ const OperationConfig = {
     "Generate HOTP": {
         module: "Default",
         description: "The HMAC-based One-Time Password algorithm (HOTP) is an algorithm that computes a one-time password from a shared secret key and an incrementing counter. It has been adopted as Internet Engineering Task Force standard RFC 4226, is the cornerstone of Initiative For Open Authentication (OATH), and is used in a number of two-factor authentication systems.<br><br>Enter the secret as the input or leave it blank for a random secret to be generated.",
-        inputType: "string",
+        inputType: "byteArray",
         outputType: "string",
         args: [
             {

src/core/config/modules/Default.js

@@ -143,6 +143,7 @@ OpModules.Default = {
     "Microsoft Script Decoder": MS.runDecodeScript,
     "Entropy":              Entropy.runEntropy,
     "Frequency distribution": Entropy.runFreqDistrib,
+    "Chi Square":           Entropy.runChiSq,
     "Detect File Type":     FileType.runDetect,
     "Scan for Embedded Files": FileType.runScanForEmbeddedFiles,
     "Generate UUID":        UUID.runGenerateV4,

src/core/operations/Entropy.js

@@ -135,6 +135,31 @@ const Entropy = {
     },
 
 
+    /**
+     * Chi Square operation.
+     *
+     * @param {byteArray} data
+     * @param {Object[]} args
+     * @returns {number}
+     */
+    runChiSq: function(input, args) {
+        let distArray = new Array(256).fill(0),
+            total = 0;
+
+        for (let i = 0; i < input.length; i++) {
+            distArray[input[i]]++;
+        }
+
+        for (let i = 0; i < distArray.length; i++) {
+            if (distArray[i] > 0) {
+                total += Math.pow(distArray[i] - input.length / 256, 2) / (input.length / 256);
+            }
+        }
+
+        return total;
+    },
+
+
     /**
      * Calculates the Shannon entropy for a given chunk of data.
      *

src/core/operations/OTP.js

@@ -1,6 +1,7 @@
 import otp from "otp";
 import Base64 from "./Base64.js";
 
+
 /**
  * One-Time Password operations.
  *

test/index.js

@@ -27,6 +27,7 @@ import "./tests/operations/MorseCode.js";
 import "./tests/operations/MS.js";
 import "./tests/operations/PHP.js";
 import "./tests/operations/NetBIOS.js";
+import "./tests/operations/OTP.js";
 import "./tests/operations/StrUtils.js";
 import "./tests/operations/SeqUtils.js";
 

test/tests/operations/OTP.js

@@ -0,0 +1,23 @@
+/**
+ * OTP HOTP tests.
+ *
+ * @author bwhitn [brian.m.whitney@outlook.com]
+ *
+ * @copyright Crown Copyright 2017
+ * @license Apache-2.0
+ */
+import TestRegister from "../../TestRegister.js";
+
+TestRegister.addTests([
+    {
+        name: "Generate HOTP",
+        input: "12345678901234567890",
+        expectedOutput: "URI: otpauth://hotp/OTPAuthentication?secret=GEZDGNBVGY3TQOJQGEZDGNBVGY3TQOJQ\n\nPassword: 755224",
+        recipeConfig: [
+            {
+                op: "Generate HOTP",
+                args: ["", 32, 6, 0],
+            },
+        ],
+    },
+]);