From 38792a0f02c30614a16973261c214bf1765165d8 Mon Sep 17 00:00:00 2001
From: n1474335 <n1474335@gmail.com>
Date: Tue, 18 Jul 2017 16:09:22 +0000
Subject: [PATCH] Added differential schemes to 'XOR Brute Force' operation

---
 src/core/config/OperationConfig.js | 24 ++++++++++++------------
 src/core/operations/BitwiseOp.js   | 28 ++++++++++++++--------------
 2 files changed, 26 insertions(+), 26 deletions(-)

diff --git a/src/core/config/OperationConfig.js b/src/core/config/OperationConfig.js
index f8d9fe6d..41e159e3 100755
--- a/src/core/config/OperationConfig.js
+++ b/src/core/config/OperationConfig.js
@@ -330,30 +330,25 @@ const OperationConfig = {
                 value: BitwiseOp.XOR_BRUTE_KEY_LENGTH
             },
             {
-                name: "Length of sample",
+                name: "Sample length",
                 type: "number",
                 value: BitwiseOp.XOR_BRUTE_SAMPLE_LENGTH
             },
             {
-                name: "Offset of sample",
+                name: "Sample offset",
                 type: "number",
                 value: BitwiseOp.XOR_BRUTE_SAMPLE_OFFSET
             },
+            {
+                name: "Scheme",
+                type: "option",
+                value: BitwiseOp.XOR_SCHEME
+            },
             {
                 name: "Null preserving",
                 type: "boolean",
                 value: BitwiseOp.XOR_PRESERVE_NULLS
             },
-            {
-                name: "Differential",
-                type: "boolean",
-                value: BitwiseOp.XOR_DIFFERENTIAL
-            },
-            {
-                name: "Crib (known plaintext string)",
-                type: "binaryString",
-                value: ""
-            },
             {
                 name: "Print key",
                 type: "boolean",
@@ -363,6 +358,11 @@ const OperationConfig = {
                 name: "Output as hex",
                 type: "boolean",
                 value: BitwiseOp.XOR_BRUTE_OUTPUT_HEX
+            },
+            {
+                name: "Crib (known plaintext string)",
+                type: "binaryString",
+                value: ""
             }
         ]
     },
diff --git a/src/core/operations/BitwiseOp.js b/src/core/operations/BitwiseOp.js
index 5b7fb741..15d778c7 100755
--- a/src/core/operations/BitwiseOp.js
+++ b/src/core/operations/BitwiseOp.js
@@ -36,7 +36,9 @@ const BitwiseOp = {
             o = input[i];
             x = nullPreserving && (o === 0 || o === k) ? o : func(o, k);
             result.push(x);
-            if (scheme !== "Standard" && !(nullPreserving && (o === 0 || o === k))) {
+            if (scheme &&
+                scheme !== "Standard" &&
+                !(nullPreserving && (o === 0 || o === k))) {
                 switch (scheme) {
                     case "Input differential":
                         key[i % key.length] = x;
@@ -120,19 +122,19 @@ const BitwiseOp = {
      * @returns {string}
      */
     runXorBrute: function (input, args) {
-        let keyLength = parseInt(args[0], 10),
+        const keyLength = parseInt(args[0], 10),
             sampleLength = args[1],
             sampleOffset = args[2],
-            nullPreserving = args[3],
-            differential = args[4],
-            crib = args[5],
-            printKey = args[6],
-            outputHex = args[7],
-            regex;
+            scheme = args[3],
+            nullPreserving = args[4],
+            printKey = args[5],
+            outputHex = args[6],
+            crib = args[7];
 
         let output = "",
             result,
-            resultUtf8;
+            resultUtf8,
+            regex;
 
         input = input.slice(sampleOffset, sampleOffset + sampleLength);
 
@@ -142,14 +144,12 @@ const BitwiseOp = {
 
 
         for (let key = 1, l = Math.pow(256, keyLength); key < l; key++) {
-            result = BitwiseOp._bitOp(input, Utils.fromHex(key.toString(16)), BitwiseOp._xor, nullPreserving, differential);
+            result = BitwiseOp._bitOp(input, Utils.fromHex(key.toString(16)), BitwiseOp._xor, nullPreserving, scheme);
             resultUtf8 = Utils.byteArrayToUtf8(result);
             if (crib !== "" && resultUtf8.search(regex) === -1) continue;
             if (printKey) output += "Key = " + Utils.hex(key, (2*keyLength)) + ": ";
-            if (outputHex)
-                output += Utils.toHex(result) + "\n";
-            else
-                output += Utils.printable(resultUtf8, false) + "\n";
+            if (outputHex) output += Utils.toHex(result) + "\n";
+            else output += Utils.printable(resultUtf8, false) + "\n";
             if (printKey) output += "\n";
         }
         return output;