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2 Commits
0.1.3b ... 0.1.3d

Author SHA1 Message Date
Matt Nadareski
0190f3d316 Encrypt, comments 2019-04-07 02:10:16 -07:00
Matt Nadareski
5c6b303d41 DoFinal 2019-04-07 02:03:44 -07:00
1 changed files with 18 additions and 21 deletions
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39
3DSDecrypt/ThreeDSTool.cs
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@@ -122,7 +122,7 @@ namespace ThreeDS
var str = BitConverter.ToString(plainIV).Replace("-", "");
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(false, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), plainIV));
Console.WriteLine("Partition {0} ExeFS: Decrypting: ExHeader", p);
@@ -137,7 +137,7 @@ namespace ThreeDS
f.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits) * header.SectorSize, SeekOrigin.Begin);
g.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits) * header.SectorSize, SeekOrigin.Begin);
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(false, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), exefsIV));
g.Write(exefsctrmode2C.ProcessBytes(f.ReadBytes((int)header.SectorSize)));
@@ -162,10 +162,10 @@ namespace ThreeDS
byte[] exefsIVWithOffsetForHeader = AddToByteArray(exefsIV, (int)ctroffset);
var exefsctrmode = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var exefsctrmode = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode.Init(false, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey)), exefsIVWithOffsetForHeader));
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(true, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), exefsIVWithOffsetForHeader));
f.BaseStream.Seek((((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits) + 1) * header.SectorSize) + fileHeader.FileOffset, SeekOrigin.Begin);
@@ -183,7 +183,7 @@ namespace ThreeDS
if (datalenB > 0)
{
g.Write(exefsctrmode2C.ProcessBytes(exefsctrmode.ProcessBytes(f.ReadBytes((int)datalenB))));
g.Write(exefsctrmode2C.DoFinal(exefsctrmode.DoFinal(f.ReadBytes((int)datalenB))));
g.Flush();
}
@@ -199,7 +199,7 @@ namespace ThreeDS
byte[] exefsIVWithOffset = AddToByteArray(exefsIV, ctroffsetE);
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(false, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), exefsIVWithOffset));
f.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits + 1) * header.SectorSize, SeekOrigin.Begin);
@@ -215,7 +215,7 @@ namespace ThreeDS
}
if (exefsSizeB > 0)
{
g.Write(exefsctrmode2C.ProcessBytes(f.ReadBytes(exefsSizeB)));
g.Write(exefsctrmode2C.DoFinal(f.ReadBytes(exefsSizeB)));
g.Flush();
}
@@ -231,7 +231,7 @@ namespace ThreeDS
int romfsSizeM = (int)(partitionHeader.RomFSSizeInMediaUnits * header.SectorSize) / (1024 * 1024);
int romfsSizeB = (int)(partitionHeader.RomFSSizeInMediaUnits * header.SectorSize) % (1024 * 1024);
var romfsctrmode = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var romfsctrmode = CipherUtilities.GetCipher("AES/CTR");
romfsctrmode.Init(false, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey)), romfsIV));
f.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.RomFSOffsetInMediaUnits) * header.SectorSize, SeekOrigin.Begin);
@@ -247,7 +247,7 @@ namespace ThreeDS
}
if (romfsSizeB > 0)
{
g.Write(romfsctrmode.ProcessBytes(f.ReadBytes(romfsSizeB)));
g.Write(romfsctrmode.DoFinal(f.ReadBytes(romfsSizeB)));
g.Flush();
}
@@ -277,9 +277,6 @@ namespace ThreeDS
}
}
/// <summary>
/// Writes wrong header values
/// </summary>
public void Encrypt()
{
if (!File.Exists(filename))
@@ -386,7 +383,7 @@ namespace ThreeDS
var str = BitConverter.ToString(plainIV).Replace("-", "");
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(true, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), plainIV));
Console.WriteLine("Partition {0} ExeFS: Encrypting: ExHeader", p);
@@ -401,7 +398,7 @@ namespace ThreeDS
f.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits) * header.SectorSize, SeekOrigin.Begin);
g.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits) * header.SectorSize, SeekOrigin.Begin);
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(true, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), exefsIV));
g.Write(exefsctrmode2C.ProcessBytes(f.ReadBytes((int)header.SectorSize)));
@@ -426,10 +423,10 @@ namespace ThreeDS
byte[] exefsIVWithOffsetForHeader = AddToByteArray(exefsIV, (int)ctroffset);
var exefsctrmode = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var exefsctrmode = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode.Init(true, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey)), exefsIVWithOffsetForHeader));
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(false, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), exefsIVWithOffsetForHeader));
f.BaseStream.Seek((((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits) + 1) * header.SectorSize) + fileHeader.FileOffset, SeekOrigin.Begin);
@@ -447,7 +444,7 @@ namespace ThreeDS
if (datalenB > 0)
{
g.Write(exefsctrmode2C.ProcessBytes(exefsctrmode.ProcessBytes(f.ReadBytes((int)datalenB))));
g.Write(exefsctrmode2C.DoFinal(exefsctrmode.DoFinal(f.ReadBytes((int)datalenB))));
g.Flush();
}
@@ -463,7 +460,7 @@ namespace ThreeDS
byte[] exefsIVWithOffset = AddToByteArray(exefsIV, ctroffsetE);
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
exefsctrmode2C = CipherUtilities.GetCipher("AES/CTR");
exefsctrmode2C.Init(true, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey2C)), exefsIVWithOffset));
f.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.ExeFSOffsetInMediaUnits + 1) * header.SectorSize, SeekOrigin.Begin);
@@ -479,7 +476,7 @@ namespace ThreeDS
}
if (exefsSizeB > 0)
{
g.Write(exefsctrmode2C.ProcessBytes(f.ReadBytes(exefsSizeB)));
g.Write(exefsctrmode2C.DoFinal(f.ReadBytes(exefsSizeB)));
g.Flush();
}
@@ -510,7 +507,7 @@ namespace ThreeDS
}
}
var romfsctrmode = CipherUtilities.GetCipher("AES/CTR"); // ("AES/CTR/NoPadding")
var romfsctrmode = CipherUtilities.GetCipher("AES/CTR");
romfsctrmode.Init(true, new ParametersWithIV(new KeyParameter(TakeSixteen(NormalKey)), romfsIV));
f.BaseStream.Seek((header.PartitionsTable[p].Offset + partitionHeader.RomFSOffsetInMediaUnits) * header.SectorSize, SeekOrigin.Begin);
@@ -526,7 +523,7 @@ namespace ThreeDS
}
if (romfsSizeB > 0)
{
g.Write(romfsctrmode.ProcessBytes(f.ReadBytes(romfsSizeB)));
g.Write(romfsctrmode.DoFinal(f.ReadBytes(romfsSizeB)));
g.Flush();
}