Merge pull request #72 from Feezex/main

Fix git reset --head

Author: jglim

.github/workflows/dotnet-desktop.yml

@@ -52,7 +52,7 @@ jobs:
 
     # Upload the completed build
     - name: Upload build artifacts
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         name: VisualUnlockECU (Windows, ZIP)
         path: UnlockECU/VisualUnlockECU/bin/Release/net5.0-windows

.gitignore

@@ -348,3 +348,9 @@ MigrationBackup/
 
 # Ionide (cross platform F# VS Code tools) working folder
 .ionide/
+
+# MacOS
+.DS_Store
+
+# Rider
+.idea/

UnlockECU/UnlockECU/Security/ArrayReverseAlgo.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+
+namespace UnlockECU
+{
+    /// <summary>
+    /// Generic array reverse algo, where the seed/output are of equal length, and output is the reversed seed array
+    /// </summary>
+    class ArrayReverseAlgo : SecurityProvider
+    {
+        public override bool GenerateKey(byte[] inSeed, byte[] outKey, int accessLevel, List<Parameter> parameters)
+        {
+            if (inSeed.Length != outKey.Length)
+            {
+                return false;
+            }
+            Array.Reverse(inSeed);
+            Array.Copy(inSeed, outKey, inSeed.Length);
+            return true;
+        }
+        public override string GetProviderName()
+        {
+            return "ArrayReverseAlgo";
+        }
+    }
+}
+

UnlockECU/UnlockECU/Security/ESP9212Algo1.cs

@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+
+namespace UnlockECU
+{
+    /// <summary>
+    /// ESP9212Algo1 
+    /// Experimental, unverified
+    /// </summary>
+    class ESP9212Algo1 : SecurityProvider
+    {
+        public override bool GenerateKey(byte[] inSeed, byte[] outKey, int accessLevel, List<Parameter> parameters)
+        {
+            if (outKey.Length != 2) { return false; }
+            if (inSeed.Length != 2) { return false; }
+
+            uint val = inSeed[0];
+            val <<= 8;
+            val |= inSeed[1];
+
+            uint snapshot = val;
+            val /= 4;
+            val ^= snapshot;
+            val *= 8;
+            val ^= snapshot;
+
+            outKey[0] = (byte)(val >> 8);
+            outKey[1] = (byte)val;
+            return true;
+        }
+
+        public override string GetProviderName()
+        {
+            return "ESP9212Algo1";
+        }
+    }
+}

UnlockECU/UnlockECU/Security/HondaAlgo1.cs

@@ -0,0 +1,49 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace UnlockECU.Security
+{
+    /// <summary>
+    /// HondaAlgo1
+    /// Level 1, used for firmware flashing
+    /// Keys are embedded as a 12-byte ascii block in the *.rwd.gz firmware files (J2534Standard/CalibFiles)
+    /// Firmware format is documented in rwd-xray https://github.com/jpancotti/rwd-xray
+    /// Key generation is documented in HondaReflashTool https://github.com/bouletmarc/HondaReflashTool
+    /// </summary>
+    class HondaAlgo1 : SecurityProvider
+    {
+        public override bool GenerateKey(byte[] inSeed, byte[] outKey, int accessLevel, List<Parameter> parameters)
+        {
+            if ((inSeed.Length != 2) || (outKey.Length != 2))
+            {
+                return false;
+            }
+            byte[] k = GetParameterBytearray(parameters, "K");
+
+            ushort k0_xor = (ushort)(k[0] << 8 | k[1]);
+            ushort k1_mul = (ushort)(k[2] << 8 | k[3]);
+            ushort k2_mod = (ushort)(k[4] << 8 | k[5]);
+            ushort seed = (ushort)(inSeed[0] << 8 | inSeed[1]);
+
+            int key = seed * k1_mul;
+            if (k2_mod != 0)
+            {
+                key %= k2_mod;
+            }
+            key ^= k0_xor + seed;
+            key &= 0xFFFF;
+
+            outKey[0] = (byte)(key >> 8);
+            outKey[1] = (byte)key;
+            return true;
+        }
+
+        public override string GetProviderName()
+        {
+            return "HondaAlgo1";
+        }
+    }
+}