diff --git a/NDecrypt/Data/Constants.cs b/NDecrypt/Data/Constants.cs
index 7e786ef..108f957 100644
--- a/NDecrypt/Data/Constants.cs
+++ b/NDecrypt/Data/Constants.cs
@@ -1,9 +1,14 @@
-using System.Numerics;
+using System.IO;
+using System.Linq;
+using System.Numerics;
+using System.Reflection;
namespace NDecrypt.Data
{
- public static class Constants
+ public class Constants
{
+ #region NDS
+
public static byte[] NDSEncryptionData = new byte[]
{
0x99,0xD5,0x20,0x5F,0x57,0x44,0xF5,0xB9,0x6E,0x19,0xA4,0xD9,0x9E,0x6A,0x5A,0x94,
@@ -269,66 +274,102 @@ namespace NDecrypt.Data
0x96,0xE7,0xC4,0x18,0x5F,0xAD,0xF5,0x19,
};
+ // ARM9 decryption check values
+ public const uint MAGIC30 = 0x72636E65;
+ public const uint MAGIC34 = 0x6A624F79;
+
+ #endregion
+
+ #region 3DS
+
// Setup Keys and IVs
public static byte[] PlainCounter = new byte[] { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
public static byte[] ExefsCounter = new byte[] { 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
public static byte[] RomfsCounter = new byte[] { 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- // Note: BigInteger requires the 0x00 at the end of each string in order to preserve the sign value
- // Note: BigInteger requires that the values be in little endian format, the values in
-
- // Big Endian - 0x1F, 0xF9, 0xE9, 0xAA, 0xC5, 0xFE, 0x04, 0x08, 0x02, 0x45, 0x91, 0xDC, 0x5D, 0x52, 0x76, 0x8A
- // Little Endian - 0x8A, 0x76, 0x52, 0x5D, 0xDC, 0x91, 0x45, 0x02, 0x08, 0x04, 0xFE, 0xC5, 0xAA, 0xE9, 0xF9, 0x1F
- public static BigInteger AESHardwareConstant = new BigInteger(new byte[] { 0x8A, 0x76, 0x52, 0x5D, 0xDC, 0x91, 0x45, 0x02, 0x08, 0x04, 0xFE, 0xC5, 0xAA, 0xE9, 0xF9, 0x1F });
+ public static BigInteger AESHardwareConstant { get; private set; }
#region Retail 3DS keys
// KeyX 0x18 (New 3DS 9.3)
- // Big Endian - 0x82, 0xE9, 0xC9, 0xBE, 0xBF, 0xB8, 0xBD, 0xB8, 0x75, 0xEC, 0xC0, 0xA0, 0x7D, 0x47, 0x43, 0x74
- // Little Endian - 0x74, 0x43, 0x47, 0x7D, 0xA0, 0xC0, 0xEC, 0x75, 0xB8, 0xBD, 0xB8, 0xBF, 0xBE, 0xC9, 0xE9, 0x82
- public static BigInteger KeyX0x18 = new BigInteger(new byte[] { 0x74, 0x43, 0x47, 0x7D, 0xA0, 0xC0, 0xEC, 0x75, 0xB8, 0xBD, 0xB8, 0xBF, 0xBE, 0xC9, 0xE9, 0x82, 0x00 });
+ public static BigInteger KeyX0x18 { get; private set; }
// KeyX 0x1B (New 3DS 9.6)
- // Big Endian - 0x45, 0xAD, 0x04, 0x95, 0x39, 0x92, 0xC7, 0xC8, 0x93, 0x72, 0x4A, 0x9A, 0x7B, 0xCE, 0x61, 0x82
- // Little Endian - 0x82, 0x61, 0xCE, 0x7B, 0x9A, 0x4A, 0x72, 0x93, 0xC8, 0xC7, 0x92, 0x39, 0x95, 0x04, 0xAD, 0x45
- public static BigInteger KeyX0x1B = new BigInteger(new byte[] { 0x82, 0x61, 0xCE, 0x7B, 0x9A, 0x4A, 0x72, 0x93, 0xC8, 0xC7, 0x92, 0x39, 0x95, 0x04, 0xAD, 0x45, 0x00 });
+ public static BigInteger KeyX0x1B { get; private set; }
// KeyX 0x25 (> 7.x)
- // Big Endian - 0xCE, 0xE7, 0xD8, 0xAB, 0x30, 0xC0, 0x0D, 0xAE, 0x85, 0x0E, 0xF5, 0xE3, 0x82, 0xAC, 0x5A, 0xF3
- // Little Endian - 0xF3, 0x5A, 0xAC, 0x82, 0xE3, 0xF5, 0x0E, 0x85, 0xAE, 0x0D, 0xC0, 0x30, 0xAB, 0xD8, 0xE7, 0xCE
- public static BigInteger KeyX0x25 = new BigInteger(new byte[] { 0xF3, 0x5A, 0xAC, 0x82, 0xE3, 0xF5, 0x0E, 0x85, 0xAE, 0x0D, 0xC0, 0x30, 0xAB, 0xD8, 0xE7, 0xCE, 0x00 });
+ public static BigInteger KeyX0x25 { get; private set; }
// Dev KeyX 0x2C (< 6.x)
- // Big Endian - 0xB9, 0x8E, 0x95, 0xCE, 0xCA, 0x3E, 0x4D, 0x17, 0x1F, 0x76, 0xA9, 0x4D, 0xE9, 0x34, 0xC0, 0x53
- // Little Endian - 0x53, 0xC0, 0x34, 0xE9, 0x4D, 0xA9, 0x76, 0x1F, 0x17, 0x4D, 0x3E, 0xCA, 0xCE, 0x95, 0x8E, 0xB9
- public static BigInteger KeyX0x2C = new BigInteger(new byte[] { 0x53, 0xC0, 0x34, 0xE9, 0x4D, 0xA9, 0x76, 0x1F, 0x17, 0x4D, 0x3E, 0xCA, 0xCE, 0x95, 0x8E, 0xB9, 0x00 });
+ public static BigInteger KeyX0x2C { get; private set; }
#endregion
#region Dev 3DS Keys
// Dev KeyX 0x18 (New 3DS 9.3)
- // Big Endian - 0x30, 0x4B, 0xF1, 0x46, 0x83, 0x72, 0xEE, 0x64, 0x11, 0x5E, 0xBD, 0x40, 0x93, 0xD8, 0x42, 0x76
- // Little Endian - 0x76, 0x42, 0xD8, 0x93, 0x40, 0xBD, 0x5E, 0x11, 0x64, 0xEE, 0x72, 0x83, 0x46, 0xF1, 0x4B, 0x30
- public static BigInteger DevKeyX0x18 = new BigInteger(new byte[] { 0x76, 0x42, 0xD8, 0x93, 0x40, 0xBD, 0x5E, 0x11, 0x64, 0xEE, 0x72, 0x83, 0x46, 0xF1, 0x4B, 0x30, 0x00 });
+ public static BigInteger DevKeyX0x18 { get; private set; }
// Dev KeyX 0x1B New 3DS 9.6)
- // Big Endian - 0x6C, 0x8B, 0x29, 0x44, 0xA0, 0x72, 0x60, 0x35, 0xF9, 0x41, 0xDF, 0xC0, 0x18, 0x52, 0x4F, 0xB6
- // Little Endian - 0xB6, 0x4F, 0x52, 0x18, 0xC0, 0xDF, 0x41, 0xF9, 0x35, 0x60, 0x72, 0xA0, 0x44, 0x29, 0x8B, 0x6C
- public static BigInteger DevKeyX0x1B = new BigInteger(new byte[] { 0xB6, 0x4F, 0x52, 0x18, 0xC0, 0xDF, 0x41, 0xF9, 0x35, 0x60, 0x72, 0xA0, 0x44, 0x29, 0x8B, 0x6C, 0x00 });
+ public static BigInteger DevKeyX0x1B { get; private set; }
// Dev KeyX 0x25 (> 7.x)
- // Big Endian - 0x81, 0x90, 0x7A, 0x4B, 0x6F, 0x1B, 0x47, 0x32, 0x3A, 0x67, 0x79, 0x74, 0xCE, 0x4A, 0xD7, 0x1B
- // Little Endian - 0x1B, 0xD7, 0x4A, 0xCE, 0x74, 0x79, 0x67, 0x3A, 0x32, 0x47, 0x1B, 0x6F, 0x4B, 0x7A, 0x90, 0x81
- public static BigInteger DevKeyX0x25 = new BigInteger(new byte[] { 0x1B, 0xD7, 0x4A, 0xCE, 0x74, 0x79, 0x67, 0x3A, 0x32, 0x47, 0x1B, 0x6F, 0x4B, 0x7A, 0x90, 0x81, 0x00 });
+ public static BigInteger DevKeyX0x25 { get; private set; }
// Dev KeyX 0x2C (< 6.x)
- // Big Endian - 0x51, 0x02, 0x07, 0x51, 0x55, 0x07, 0xCB, 0xB1, 0x8E, 0x24, 0x3D, 0xCB, 0x85, 0xE2, 0x3A, 0x1D
- // Little Endian - 0x1D, 0x3A, 0xE2, 0x85, 0xCB, 0x3D, 0x24, 0x8E, 0xB1, 0xCB, 0x07, 0x55, 0x51, 0x07, 0x02, 0x51
- public static BigInteger DevKeyX0x2C = new BigInteger(new byte[] { 0x1D, 0x3A, 0xE2, 0x85, 0xCB, 0x3D, 0x24, 0x8E, 0xB1, 0xCB, 0x07, 0x55, 0x51, 0x07, 0x02, 0x51, 0x00 });
+ public static BigInteger DevKeyX0x2C { get; private set; }
#endregion
public const int CXTExtendedDataHeaderLength = 0x800;
+
+ public static bool IsReady { get; private set; }
+
+ ///
+ /// Setup all of the necessary constants
+ ///
+ /// keys.bin should be in little endian format
+ static Constants()
+ {
+ string keyfile = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "keys.bin");
+ if (!File.Exists(keyfile))
+ {
+ IsReady = false;
+ return;
+ }
+
+ try
+ {
+ using (BinaryReader reader = new BinaryReader(File.Open(keyfile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
+ {
+ // This is required to preserve sign for BigInteger
+ byte[] signByte = new byte[] { 0x00 };
+
+ // Hardware constant
+ AESHardwareConstant = new BigInteger(reader.ReadBytes(16));
+
+ // Retail keys
+ KeyX0x18 = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ KeyX0x1B = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ KeyX0x25 = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ KeyX0x2C = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+
+ // Development keys
+ DevKeyX0x18 = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ DevKeyX0x1B = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ DevKeyX0x25 = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ DevKeyX0x2C = new BigInteger(reader.ReadBytes(16).Concat(signByte).ToArray());
+ }
+ }
+ catch
+ {
+ IsReady = false;
+ return;
+ }
+
+ IsReady = true;
+ }
+
+ #endregion
}
}
diff --git a/NDecrypt/Headers/NDSHeader.cs b/NDecrypt/Headers/NDSHeader.cs
index 8876cfa..c3a0a52 100644
--- a/NDecrypt/Headers/NDSHeader.cs
+++ b/NDecrypt/Headers/NDSHeader.cs
@@ -12,10 +12,6 @@ namespace NDecrypt.Headers
private uint[] cardHash = new uint[0x412];
private uint[] arg2 = new uint[3];
- // ARM9 decryption check values
- private const uint MAGIC30 = 0x72636E65;
- private const uint MAGIC34 = 0x6A624F79;
-
#endregion
#region Common to all NDS files
@@ -674,7 +670,7 @@ namespace NDecrypt.Headers
if (!encrypt)
{
Decrypt(ref p1, ref p0);
- if (p0 == MAGIC30 && p1 == MAGIC34)
+ if (p0 == Constants.MAGIC30 && p1 == Constants.MAGIC34)
{
p0 = 0xE7FFDEFF;
p1 = 0xE7FFDEFF;
@@ -717,8 +713,8 @@ namespace NDecrypt.Headers
if (p0 == 0xE7FFDEFF && p1 == 0xE7FFDEFF)
{
- p0 = MAGIC30;
- p1 = MAGIC34;
+ p0 = Constants.MAGIC30;
+ p1 = Constants.MAGIC34;
}
Encrypt(ref p1, ref p0);
diff --git a/NDecrypt/Program.cs b/NDecrypt/Program.cs
index 24e0c65..ade24bb 100644
--- a/NDecrypt/Program.cs
+++ b/NDecrypt/Program.cs
@@ -1,5 +1,6 @@
using System;
using System.IO;
+using NDecrypt.Data;
namespace NDecrypt
{
@@ -36,6 +37,14 @@ namespace NDecrypt
start = 2;
}
+ // Ensure the constants are all set
+ new Constants();
+ if (!Constants.IsReady)
+ {
+ Console.WriteLine("Could not read keys from keys.bin. Please make sure the file exists and try again");
+ return;
+ }
+
for (int i = start; i < args.Length; i++)
{
if (File.Exists(args[i]))