Leahnaya/PKHeX
1
0
Fork 0
mirror of https://github.com/kwsch/PKHeX.git synced 2026-10-02 16:58:08 -05:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #385 from kwsch/b/memecrypto-winxp

Browse Source 
B/memecrypto winxp
This commit is contained in:
SciresM
2016-11-12 13:34:45 -08:00
committed by GitHub
parent 28d6c7cd94 77d7932d19
commit cbe4da26bb
7 changed files with 187 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
PKHeX/MainWindow/Main.cs
View File

@@ -793,6 +793,15 @@ private void openSAV(SaveFile sav, string path)
if (sav == null || sav.Version == GameVersion.Invalid)
{ Util.Error("Invalid save file loaded. Aborting.", path); return; }
if (!string.IsNullOrEmpty(path)) // If path is null, this is the default save
{
if (sav.RequiresMemeCrypto && !MemeCrypto.CanUseMemeCrypto())
{
Util.Error("Your platform does not support the required cryptography components.", "In order to be able to save your changes, you must either upgrade to a newer version of Windows or disable FIPS compliance mode.");
// Don't abort loading; user can still view save and fix checksum on another platform.
}
}
// Finish setting up the save file.
if (sav.IndeterminateGame && sav.Generation == 3)
{

1
PKHeX/PKHeX.csproj
View File

@@ -426,6 +426,7 @@
</Compile>
<Compile Include="Game\ComboItem.cs" />
<Compile Include="Util\BigEndian.cs" />
<Compile Include="Util\CryptoUtil.cs" />
<Compile Include="Util\DataUtil.cs" />
<Compile Include="Util\DateUtil.cs" />
<Compile Include="Util\DeployUtil.cs" />

31
PKHeX/Saves/SAV7.cs
View File

@@ -819,29 +819,48 @@ private void setWC6(MysteryGift wc6, int index)
// Writeback Validity
public override string MiscSaveChecks()
{
string r = "";
var r = new StringBuilder();
// MemeCrypto check
if (RequiresMemeCrypto && !MemeCrypto.CanUseMemeCrypto())
{
r.AppendLine("Platform does not support required cryptography providers.");
r.AppendLine("Checksum will be broken until the file is saved using an OS without FIPS compliance enabled or a newer OS.");
r.AppendLine();
}
// FFFF checks
byte[] FFFF = Enumerable.Repeat((byte)0xFF, 0x200).ToArray();
for (int i = 0; i < Data.Length / 0x200; i++)
{
if (!FFFF.SequenceEqual(Data.Skip(i * 0x200).Take(0x200))) continue;
r = $"0x200 chunk @ 0x{(i*0x200).ToString("X5")} is FF'd."
+ Environment.NewLine + "Cyber will screw up (as of August 31st 2014)." + Environment.NewLine + Environment.NewLine;
r.AppendLine($"0x200 chunk @ 0x{(i * 0x200).ToString("X5")} is FF'd.");
r.AppendLine("Cyber will screw up (as of August 31st 2014).");
r.AppendLine();
// Check to see if it is in the Pokedex
if (i * 0x200 > PokeDex && i * 0x200 < PokeDex + 0x900)
{
r += "Problem lies in the Pokedex. ";
r.Append("Problem lies in the Pokedex. ");
if (i * 0x200 == PokeDex + 0x400)
r += "Remove a language flag for a species < 585, ie Petilil";
r.Append("Remove a language flag for a species < 585, ie Petilil");
}
break;
}
return r;
return r.ToString();
}
public override string MiscSaveInfo()
{
return Blocks.Aggregate("", (current, b) => current +
$"{b.ID.ToString("00")}: {b.Offset.ToString("X5")}-{(b.Offset + b.Length).ToString("X5")}, {b.Length.ToString("X5")}{Environment.NewLine}");
}
public override bool RequiresMemeCrypto
{
get
{
return true;
}
}
}
}

2
PKHeX/Saves/SaveFile.cs
View File

@@ -550,5 +550,7 @@ public void setData(byte[] input, int Offset)
input.CopyTo(Data, Offset);
Edited = true;
}
public virtual bool RequiresMemeCrypto { get { return false; } }
}
}

2
PKHeX/Saves/SaveUtil.cs
View File

@@ -586,7 +586,7 @@ internal static ushort check16(byte[] data, int blockID, ushort initial = 0)
}
public static byte[] Resign7(byte[] sav7)
{
return MemeCrypto.Resign(sav7);
return MemeCrypto.Resign(sav7, false);
}
/// <summary>Calculates the 32bit checksum over an input byte array. Used in GBA save files.</summary>
/// <param name="data">Input byte array</param>

128
PKHeX/Saves/Substructures/MemeCrypto.cs
View File

@@ -14,7 +14,7 @@ private static byte[] AESECBEncrypt(byte[] key, byte[] data)
{
using (MemoryStream ms = new MemoryStream())
{
using (var aes = new AesCryptoServiceProvider())
using (var aes = Util.GetAesProvider())
{
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.None;
@@ -34,7 +34,7 @@ private static byte[] AESECBDecrypt(byte[] key, byte[] data)
{
using (MemoryStream ms = new MemoryStream())
{
using (var aes = new AesCryptoServiceProvider())
using (var aes = Util.GetAesProvider())
{
aes.Mode = CipherMode.ECB;
aes.Padding = PaddingMode.None;
@@ -204,64 +204,102 @@ private static byte[] ReverseCrypt(byte[] input)
if (input.Length != 0x80)
throw new ArgumentException("Invalid Memecrypto decryption byte[]!");
var sha1 = new SHA1CryptoServiceProvider();
using (var sha1 = Util.GetSHA1Provider())
{
byte[] PubKeyDer = "307C300D06092A864886F70D0101010500036B003068026100B61E192091F90A8F76A6EAAA9A3CE58C863F39AE253F037816F5975854E07A9A456601E7C94C29759FE155C064EDDFA111443F81EF1A428CF6CD32F9DAC9D48E94CFB3F690120E8E6B9111ADDAF11E7C96208C37C0143FF2BF3D7E831141A9730203010001".ToByteArray();
byte[] enc = new byte[0x60];
Array.Copy(input, 0x20, enc, 0, 0x60);
byte[] PubKeyDer = "307C300D06092A864886F70D0101010500036B003068026100B61E192091F90A8F76A6EAAA9A3CE58C863F39AE253F037816F5975854E07A9A456601E7C94C29759FE155C064EDDFA111443F81EF1A428CF6CD32F9DAC9D48E94CFB3F690120E8E6B9111ADDAF11E7C96208C37C0143FF2BF3D7E831141A9730203010001".ToByteArray();
byte[] enc = new byte[0x60];
Array.Copy(input, 0x20, enc, 0, 0x60);
byte[] keybuf = new byte[PubKeyDer.Length + 0x20];
Array.Copy(PubKeyDer, keybuf, PubKeyDer.Length);
Array.Copy(input, 0, keybuf, PubKeyDer.Length, 0x20);
byte[] key = sha1.ComputeHash(keybuf).Take(0x10).ToArray();
byte[] keybuf = new byte[PubKeyDer.Length + 0x20];
Array.Copy(PubKeyDer, keybuf, PubKeyDer.Length);
Array.Copy(input, 0, keybuf, PubKeyDer.Length, 0x20);
byte[] key = sha1.ComputeHash(keybuf).Take(0x10).ToArray();
byte[] RSA = RSAEncrypt(enc);
var dec = MemeCryptoAESDecrypt(key, RSA);
if (sha1.ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
return dec;
RSA[0] |= 0x80;
dec = MemeCryptoAESDecrypt(key, RSA);
if (sha1.ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
return dec;
byte[] RSA = RSAEncrypt(enc);
var dec = MemeCryptoAESDecrypt(key, RSA);
if (sha1.ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
return dec;
RSA[0] |= 0x80;
dec = MemeCryptoAESDecrypt(key, RSA);
if (sha1.ComputeHash(dec).Take(0x8).SequenceEqual(dec.Skip(0x58)))
return dec;
}
return null;
}
public static byte[] Resign(byte[] sav7)
/// <summary>
/// Resigns save data.
/// </summary>
/// <param name="sav7">The save data to resign.</param>
/// <param name="throwIfUnsupported">If true, throw an <see cref="InvalidOperationException"/> if MemeCrypto is unsupported. If false, calling this function will have no effect.</param>
/// <exception cref="InvalidOperationException">Thrown if the current platform has FIPS mode enabled on a platform that does not support the required crypto service providers.</exception>
/// <returns>The resigned save data.</returns>
public static byte[] Resign(byte[] sav7, bool throwIfUnsupported = true)
{
if (sav7 == null || sav7.Length != 0x6BE00)
return null;
return null;
var sha1 = new SHA1CryptoServiceProvider();
try
{
byte[] outSav = (byte[])sav7.Clone();
byte[] outSav = (byte[])sav7.Clone();
using (var sha1 = Util.GetSHA1Provider())
{
using (var sha256 = Util.GetSHA256Provider())
{
byte[] CurSig = new byte[0x80];
Array.Copy(sav7, 0x6BB00, CurSig, 0, 0x80);
byte[] CurSig = new byte[0x80];
Array.Copy(sav7, 0x6BB00, CurSig, 0, 0x80);
byte[] ChecksumTable = new byte[0x140];
Array.Copy(sav7, 0x6BC00, ChecksumTable, 0, 0x140);
byte[] Hash = sha256.ComputeHash(ChecksumTable);
byte[] ChecksumTable = new byte[0x140];
Array.Copy(sav7, 0x6BC00, ChecksumTable, 0, 0x140);
byte[] Hash = new SHA256CryptoServiceProvider().ComputeHash(ChecksumTable);
byte[] PubKeyDer = "307C300D06092A864886F70D0101010500036B003068026100B61E192091F90A8F76A6EAAA9A3CE58C863F39AE253F037816F5975854E07A9A456601E7C94C29759FE155C064EDDFA111443F81EF1A428CF6CD32F9DAC9D48E94CFB3F690120E8E6B9111ADDAF11E7C96208C37C0143FF2BF3D7E831141A9730203010001".ToByteArray();
byte[] PubKeyDer = "307C300D06092A864886F70D0101010500036B003068026100B61E192091F90A8F76A6EAAA9A3CE58C863F39AE253F037816F5975854E07A9A456601E7C94C29759FE155C064EDDFA111443F81EF1A428CF6CD32F9DAC9D48E94CFB3F690120E8E6B9111ADDAF11E7C96208C37C0143FF2BF3D7E831141A9730203010001".ToByteArray();
byte[] keybuf = new byte[PubKeyDer.Length + 0x20];
Array.Copy(PubKeyDer, keybuf, PubKeyDer.Length);
Array.Copy(Hash, 0, keybuf, PubKeyDer.Length, 0x20);
byte[] key = sha1.ComputeHash(keybuf).Take(0x10).ToArray();
byte[] keybuf = new byte[PubKeyDer.Length + 0x20];
Array.Copy(PubKeyDer, keybuf, PubKeyDer.Length);
Array.Copy(Hash, 0, keybuf, PubKeyDer.Length, 0x20);
byte[] key = sha1.ComputeHash(keybuf).Take(0x10).ToArray();
byte[] secret = ReverseCrypt(CurSig) ?? new byte[0x60];
byte[] secretWorkBuf = new byte[0x78];
Hash.CopyTo(secretWorkBuf, 0);
Array.Copy(secret, 0, secretWorkBuf, 0x20, 0x58);
Array.Copy(sha1.ComputeHash(secretWorkBuf), 0, secret, 0x58, 8);
byte[] secret = ReverseCrypt(CurSig) ?? new byte[0x60];
byte[] secretWorkBuf = new byte[0x78];
Hash.CopyTo(secretWorkBuf, 0);
Array.Copy(secret, 0, secretWorkBuf, 0x20, 0x58);
Array.Copy(sha1.ComputeHash(secretWorkBuf), 0, secret, 0x58, 8);
Hash.CopyTo(outSav, 0x6BB00);
byte[] MemeCrypted = MemeCryptoAESEncrypt(key, secret);
MemeCrypted[0] &= 0x7F;
var RSA = RSADecrypt(MemeCrypted);
Array.Copy(RSA, 0, outSav, 0x6BB20, 0x60);
}
}
return outSav;
}
catch (InvalidOperationException)
{
if (throwIfUnsupported)
{
throw;
}
else
{
return (byte[])sav7.Clone();
}
}
}
Hash.CopyTo(outSav, 0x6BB00);
byte[] MemeCrypted = MemeCryptoAESEncrypt(key, secret);
MemeCrypted[0] &= 0x7F;
var RSA = RSADecrypt(MemeCrypted);
Array.Copy(RSA, 0, outSav, 0x6BB20, 0x60);
return outSav;
public static bool CanUseMemeCrypto()
{
try
{
Util.GetSHA256Provider();
}
catch (InvalidOperationException)
{
return false;
}
return true;
}
}

66
PKHeX/Util/CryptoUtil.cs Normal file
View File

@@ -0,0 +1,66 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
namespace PKHeX
{
public partial class Util
{
/// <summary>
/// Creates a new instance of <see cref="SHA1CryptoServiceProvider"/>, or <see cref="SHA1Managed"/> if not supported by the current platform.
/// </summary>
/// <exception cref="InvalidOperationException">Thrown if FIPS mode is enabled on a platform that does not support <see cref="SHA1CryptoServiceProvider"/>.</exception>
public static SHA1 GetSHA1Provider()
{
SHA1 provider;
try
{
provider = new SHA1CryptoServiceProvider();
}
catch (PlatformNotSupportedException)
{
provider = new SHA1Managed();
}
return provider;
}
/// <summary>
/// Creates a new instance of <see cref="SHA256CryptoServiceProvider"/>, or <see cref="SHA256Managed"/> if not supported by the current platform.
/// </summary>
/// <exception cref="InvalidOperationException">Thrown if FIPS mode is enabled on a platform that does not support <see cref="SHA256CryptoServiceProvider"/>.</exception>
public static SHA256 GetSHA256Provider()
{
SHA256 provider;
try
{
provider = new SHA256CryptoServiceProvider();
}
catch (PlatformNotSupportedException)
{
provider = new SHA256Managed();
}
return provider;
}
/// <summary>
/// Creates a new instance of <see cref="AesCryptoServiceProvider"/>, or <see cref="AesManaged"/> if not supported by the current platform.
/// </summary>
/// <exception cref="InvalidOperationException">Thrown if FIPS mode is enabled on a platform that does not support <see cref="AesCryptoServiceProvider"/>.</exception>
public static Aes GetAesProvider()
{
Aes provider;
try
{
provider = new AesCryptoServiceProvider();
}
catch (PlatformNotSupportedException)
{
provider = new AesManaged();
}
return provider;
}
}
}