├── S63Tools ├── Sample │ └── PERMIT.TXT ├── S63Tools │ ├── S63Tools.csproj │ ├── Program.cs │ ├── Form1.cs │ ├── Form1.resx │ ├── Crc32.cs │ ├── Form1.Designer.cs │ ├── S63Tools.cs │ └── BlowFish.cs └── S63Tools.sln └── .gitignore /S63Tools/Sample/PERMIT.TXT: -------------------------------------------------------------------------------- 1 | :DATE 20220101 00:00 2 | :VERSION 2 3 | :ENC 4 | ABCDE01234567891011121314151617181920212223242526272829303132333,0,2,AB, 5 | ABCDF01234567891011121314151617181920212223242526272829303132333,0,2,AB, 6 | :ECS 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ################################################################################ 2 | # This .gitignore file was automatically created by Microsoft(R) Visual Studio. 3 | ################################################################################ 4 | 5 | /S63Tools/.vs 6 | /S63Tools/S63Tools/obj 7 | /S63Tools/S63Tools/bin 8 | *.user 9 | -------------------------------------------------------------------------------- /S63Tools/S63Tools/S63Tools.csproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | WinExe 5 | net8.0-windows 6 | enable 7 | true 8 | enable 9 | true 10 | 11 | 12 | -------------------------------------------------------------------------------- /S63Tools/S63Tools/Program.cs: -------------------------------------------------------------------------------- 1 | namespace S63Tools 2 | { 3 | internal static class Program 4 | { 5 | /// 6 | /// The main entry point for the application. 7 | /// 8 | [STAThread] 9 | static void Main() 10 | { 11 | // To customize application configuration such as set high DPI settings or default font, 12 | // see https://aka.ms/applicationconfiguration. 13 | ApplicationConfiguration.Initialize(); 14 | Application.Run(new Form1()); 15 | } 16 | } 17 | } -------------------------------------------------------------------------------- /S63Tools/S63Tools.sln: -------------------------------------------------------------------------------- 1 | 2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 17 4 | VisualStudioVersion = 17.1.32421.90 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "S63Tools", "S63Tools\S63Tools.csproj", "{863B3D25-2F6B-49C1-A075-9F3C7B08DD2A}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|Any CPU = Debug|Any CPU 11 | Release|Any CPU = Release|Any CPU 12 | EndGlobalSection 13 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 14 | {863B3D25-2F6B-49C1-A075-9F3C7B08DD2A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU 15 | {863B3D25-2F6B-49C1-A075-9F3C7B08DD2A}.Debug|Any CPU.Build.0 = Debug|Any CPU 16 | {863B3D25-2F6B-49C1-A075-9F3C7B08DD2A}.Release|Any CPU.ActiveCfg = Release|Any CPU 17 | {863B3D25-2F6B-49C1-A075-9F3C7B08DD2A}.Release|Any CPU.Build.0 = Release|Any CPU 18 | EndGlobalSection 19 | GlobalSection(SolutionProperties) = preSolution 20 | HideSolutionNode = FALSE 21 | EndGlobalSection 22 | GlobalSection(ExtensibilityGlobals) = postSolution 23 | SolutionGuid = {ED5EE353-1C2E-42F3-A859-A2CF3BFBE28D} 24 | EndGlobalSection 25 | EndGlobal 26 | -------------------------------------------------------------------------------- /S63Tools/S63Tools/Form1.cs: -------------------------------------------------------------------------------- 1 | using System.Buffers.Binary; 2 | using System.IO.Compression; 3 | using System.Security.Cryptography; 4 | using System.Text; 5 | 6 | namespace S63Tools 7 | { 8 | public partial class Form1 : Form 9 | { 10 | private readonly int _zipHeader = 0x04034b50; // 'P', 'K', 3, 4 11 | private byte[]? _hardwareId; 12 | 13 | public Form1() 14 | { 15 | InitializeComponent(); 16 | } 17 | 18 | private void buttonCalculate_Click(object sender, EventArgs e) 19 | { 20 | string permit = textBoxUserPermit.Text; 21 | 22 | try 23 | { 24 | var hwId = S63Tools.HackUserPermit(permit, out var mId, out var keyBytes); 25 | _hardwareId = hwId; 26 | labelMId.Text = $"x{mId:X4} ({(char)(mId >> 8)}{(char)(mId & 0xff)})"; 27 | labelMKey.Text = Encoding.ASCII.GetString(keyBytes ?? Array.Empty()); 28 | labelHwId.Text = Encoding.ASCII.GetString(hwId ?? Array.Empty()); 29 | } 30 | catch (Exception ex) 31 | { 32 | MessageBox.Show(ex.Message); 33 | } 34 | } 35 | 36 | private void buttonCalculateFromCellPermit_Click(object sender, EventArgs e) 37 | { 38 | if (openFileDialogPermit.ShowDialog() != DialogResult.OK) 39 | { 40 | return; 41 | } 42 | 43 | try 44 | { 45 | var hwId = S63Tools.HackCellPermit(openFileDialogPermit.FileName); 46 | _hardwareId = hwId; 47 | labelMId.Text = "-"; 48 | labelMKey.Text = "-"; 49 | labelHwId.Text = Encoding.ASCII.GetString(hwId ?? Array.Empty()); 50 | } 51 | catch (Exception ex) 52 | { 53 | MessageBox.Show(ex.Message); 54 | } 55 | } 56 | 57 | private void buttonDecryptCells_Click(object sender, EventArgs e) 58 | { 59 | var hwId = _hardwareId; 60 | if (hwId == null) 61 | { 62 | MessageBox.Show("First decrypt the HW_ID."); 63 | return; 64 | } 65 | 66 | var permits = new Dictionary(); 67 | if (openFileDialogPermit.ShowDialog() != DialogResult.OK) 68 | { 69 | return; 70 | } 71 | 72 | if (folderBrowserDialog1.ShowDialog() != DialogResult.OK) 73 | { 74 | return; 75 | } 76 | 77 | S63Tools.LoadPermit(openFileDialogPermit.FileName, permits, new[] { hwId }); 78 | 79 | foreach (var file in Directory.GetFiles(folderBrowserDialog1.SelectedPath, "*.*", SearchOption.AllDirectories)) 80 | { 81 | var ext = Path.GetExtension(file).TrimStart('.'); 82 | if (!int.TryParse(ext, out _)) 83 | { 84 | continue; 85 | } 86 | 87 | byte[]? zipData = null; 88 | var data = File.ReadAllBytes(file); 89 | string fn = Path.GetFileNameWithoutExtension(file); 90 | if (permits.TryGetValue(fn, out var cellKeys)) 91 | { 92 | var blow = new BlowFish(cellKeys.Item1); 93 | var decFile = blow.Decrypt(data, CipherMode.ECB); 94 | 95 | int header = BinaryPrimitives.ReadInt32LittleEndian(decFile); 96 | if (header != _zipHeader) 97 | { 98 | blow = new BlowFish(cellKeys.Item2); 99 | decFile = blow.Decrypt(data, CipherMode.ECB); 100 | header = BinaryPrimitives.ReadInt32LittleEndian(decFile); 101 | } 102 | 103 | if (header == _zipHeader) 104 | { 105 | zipData = decFile; 106 | } 107 | } 108 | 109 | if (zipData == null) 110 | { 111 | continue; 112 | } 113 | 114 | var zip = new ZipArchive(new MemoryStream(zipData)); 115 | var entry = zip.Entries[0]; 116 | 117 | data = new byte[entry.Length]; 118 | int read = 0; 119 | var stream = entry.Open(); 120 | while (read != data.Length) 121 | { 122 | read += stream.Read(data, read, data.Length - read); 123 | } 124 | 125 | File.WriteAllBytes(Path.Combine(folderBrowserDialog1.SelectedPath, "..", Path.GetFileName(file)), data); 126 | } 127 | } 128 | } 129 | } -------------------------------------------------------------------------------- /S63Tools/S63Tools/Form1.resx: -------------------------------------------------------------------------------- 1 | 2 | 3 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | text/microsoft-resx 110 | 111 | 112 | 2.0 113 | 114 | 115 | System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 116 | 117 | 118 | System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 119 | 120 | 121 | 17, 17 122 | 123 | 124 | 186, 17 125 | 126 | -------------------------------------------------------------------------------- /S63Tools/S63Tools/Crc32.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Collections.Generic; 3 | using System.Linq; 4 | using System.Security.Cryptography; 5 | using System.Text; 6 | 7 | /// 8 | /// Implements a 32-bit CRC hash algorithm compatible with Zip etc. 9 | /// 10 | /// 11 | /// 12 | /// Crc32 should only be used for backward compatibility with older file formats 13 | /// and algorithms. It is not secure enough for new applications. 14 | /// If you need to call multiple times for the same data either use the HashAlgorithm 15 | /// interface or remember that the result of one Compute call needs to be ~ (XOR) before 16 | /// being passed in as the seed for the next Compute call. 17 | /// 18 | public sealed class Crc32 : HashAlgorithm 19 | { 20 | /// 21 | /// The default polynomial 22 | /// 23 | private const uint DefaultPolynomial = 0xedb88320u; 24 | 25 | /// 26 | /// The default seed 27 | /// 28 | private const uint DefaultSeed = 0xffffffffu; 29 | 30 | /// 31 | /// The default table 32 | /// 33 | private static uint[] _defaultTable; 34 | 35 | /// 36 | /// The seed 37 | /// 38 | private readonly uint _seed; 39 | 40 | /// 41 | /// The table 42 | /// 43 | private readonly uint[] _table; 44 | 45 | /// 46 | /// The hash 47 | /// 48 | private uint _hash; 49 | 50 | /// 51 | /// Initializes a new instance of the class. 52 | /// 53 | public Crc32() : this(DefaultPolynomial, DefaultSeed) 54 | { 55 | } 56 | 57 | /// 58 | /// Initializes a new instance of the class. 59 | /// 60 | /// The polynomial. 61 | /// The seed. 62 | public Crc32(uint polynomial, uint seed) 63 | { 64 | _table = InitializeTable(polynomial); 65 | _seed = _hash = seed; 66 | } 67 | 68 | /// 69 | /// Initializes an implementation of the class. 70 | /// 71 | public override void Initialize() 72 | { 73 | _hash = _seed; 74 | } 75 | 76 | /// 77 | /// When overridden in a derived class, routes data written to the object into the hash algorithm for computing the 78 | /// hash. 79 | /// 80 | /// The input to compute the hash code for. 81 | /// The offset into the byte array from which to begin using data. 82 | /// The number of bytes in the byte array to use as data. 83 | protected override void HashCore(byte[] array, int ibStart, int cbSize) 84 | { 85 | _hash = CalculateHash(_table, _hash, array, ibStart, cbSize); 86 | } 87 | 88 | /// 89 | /// When overridden in a derived class, finalizes the hash computation after the last data is processed by the 90 | /// cryptographic stream object. 91 | /// 92 | /// 93 | /// The computed hash code. 94 | /// 95 | protected override byte[] HashFinal() 96 | { 97 | var hashBuffer = UInt32ToBigEndianBytes(~_hash); 98 | HashValue = hashBuffer; 99 | return hashBuffer; 100 | } 101 | 102 | /// 103 | /// Gets the size, in bits, of the computed hash code. 104 | /// 105 | public override int HashSize => 32; 106 | 107 | /// 108 | /// Computes the specified buffer. 109 | /// 110 | /// The buffer. 111 | /// 112 | public static uint Compute(Span buffer) 113 | { 114 | return Compute(DefaultSeed, buffer); 115 | } 116 | 117 | /// 118 | /// Computes the specified seed. 119 | /// 120 | /// The seed. 121 | /// The buffer. 122 | /// 123 | public static uint Compute(uint seed, Span buffer) 124 | { 125 | return Compute(DefaultPolynomial, seed, buffer); 126 | } 127 | 128 | /// 129 | /// Computes the specified polynomial. 130 | /// 131 | /// The polynomial. 132 | /// The seed. 133 | /// The buffer. 134 | /// 135 | public static uint Compute(uint polynomial, uint seed, Span buffer) 136 | { 137 | return ~CalculateHash(InitializeTable(polynomial), seed, buffer, 0, buffer.Length); 138 | } 139 | 140 | /// 141 | /// Initializes the table. 142 | /// 143 | /// The polynomial. 144 | /// 145 | private static uint[] InitializeTable(uint polynomial) 146 | { 147 | if (polynomial == DefaultPolynomial && _defaultTable != null) return _defaultTable; 148 | 149 | var createTable = new uint[256]; 150 | for (int i = 0; i < 256; i++) 151 | { 152 | uint entry = (uint)i; 153 | for (int j = 0; j < 8; j++) 154 | if ((entry & 1) == 1) 155 | entry = (entry >> 1) ^ polynomial; 156 | else 157 | entry = entry >> 1; 158 | createTable[i] = entry; 159 | } 160 | 161 | if (polynomial == DefaultPolynomial) _defaultTable = createTable; 162 | 163 | return createTable; 164 | } 165 | 166 | private static uint CalculateHash(uint[] table, uint seed, Span buffer, int start, int size) 167 | { 168 | uint crc = seed; 169 | for (int i = start; i < size - start; i++) crc = (crc >> 8) ^ table[buffer[i] ^ (crc & 0xff)]; 170 | return crc; 171 | } 172 | 173 | private static byte[] UInt32ToBigEndianBytes(uint uint32) 174 | { 175 | var result = BitConverter.GetBytes(uint32); 176 | 177 | if (BitConverter.IsLittleEndian) Array.Reverse(result); 178 | 179 | return result; 180 | } 181 | 182 | public string ComputeHashString(byte[] buffer) 183 | { 184 | var hash = ComputeHash(buffer); 185 | var sb = new StringBuilder(8); 186 | foreach (byte b in hash) sb.Append(b.ToString("X2")); 187 | 188 | return sb.ToString(); 189 | } 190 | } -------------------------------------------------------------------------------- /S63Tools/S63Tools/Form1.Designer.cs: -------------------------------------------------------------------------------- 1 | namespace S63Tools 2 | { 3 | partial class Form1 4 | { 5 | /// 6 | /// Required designer variable. 7 | /// 8 | private System.ComponentModel.IContainer components = null; 9 | 10 | /// 11 | /// Clean up any resources being used. 12 | /// 13 | /// true if managed resources should be disposed; otherwise, false. 14 | protected override void Dispose(bool disposing) 15 | { 16 | if (disposing && (components != null)) 17 | { 18 | components.Dispose(); 19 | } 20 | base.Dispose(disposing); 21 | } 22 | 23 | #region Windows Form Designer generated code 24 | 25 | /// 26 | /// Required method for Designer support - do not modify 27 | /// the contents of this method with the code editor. 28 | /// 29 | private void InitializeComponent() 30 | { 31 | textBoxUserPermit = new TextBox(); 32 | label1 = new Label(); 33 | buttonCalculate = new Button(); 34 | labelMId = new Label(); 35 | label2 = new Label(); 36 | label3 = new Label(); 37 | label4 = new Label(); 38 | labelMKey = new Label(); 39 | labelHwId = new Label(); 40 | openFileDialogPermit = new OpenFileDialog(); 41 | buttonDecryptCells = new Button(); 42 | folderBrowserDialog1 = new FolderBrowserDialog(); 43 | label5 = new Label(); 44 | buttonCalculateFromCellPermit = new Button(); 45 | SuspendLayout(); 46 | // 47 | // textBoxUserPermit 48 | // 49 | textBoxUserPermit.Location = new Point(89, 12); 50 | textBoxUserPermit.Name = "textBoxUserPermit"; 51 | textBoxUserPermit.Size = new Size(217, 23); 52 | textBoxUserPermit.TabIndex = 0; 53 | // 54 | // label1 55 | // 56 | label1.AutoSize = true; 57 | label1.Location = new Point(12, 15); 58 | label1.Name = "label1"; 59 | label1.Size = new Size(71, 15); 60 | label1.TabIndex = 1; 61 | label1.Text = "User Permit:"; 62 | // 63 | // buttonCalculate 64 | // 65 | buttonCalculate.Location = new Point(312, 12); 66 | buttonCalculate.Name = "buttonCalculate"; 67 | buttonCalculate.Size = new Size(75, 23); 68 | buttonCalculate.TabIndex = 2; 69 | buttonCalculate.Text = "Calculate"; 70 | buttonCalculate.UseVisualStyleBackColor = true; 71 | buttonCalculate.Click += buttonCalculate_Click; 72 | // 73 | // labelMId 74 | // 75 | labelMId.AutoSize = true; 76 | labelMId.Location = new Point(89, 55); 77 | labelMId.Name = "labelMId"; 78 | labelMId.Size = new Size(12, 15); 79 | labelMId.TabIndex = 3; 80 | labelMId.Text = "-"; 81 | // 82 | // label2 83 | // 84 | label2.AutoSize = true; 85 | label2.Location = new Point(12, 55); 86 | label2.Name = "label2"; 87 | label2.Size = new Size(37, 15); 88 | label2.TabIndex = 4; 89 | label2.Text = "M_ID:"; 90 | // 91 | // label3 92 | // 93 | label3.AutoSize = true; 94 | label3.Location = new Point(12, 79); 95 | label3.Name = "label3"; 96 | label3.Size = new Size(46, 15); 97 | label3.TabIndex = 5; 98 | label3.Text = "M_KEY:"; 99 | // 100 | // label4 101 | // 102 | label4.AutoSize = true; 103 | label4.Location = new Point(12, 104); 104 | label4.Name = "label4"; 105 | label4.Size = new Size(46, 15); 106 | label4.TabIndex = 6; 107 | label4.Text = "HW_ID:"; 108 | // 109 | // labelMKey 110 | // 111 | labelMKey.AutoSize = true; 112 | labelMKey.Location = new Point(89, 79); 113 | labelMKey.Name = "labelMKey"; 114 | labelMKey.Size = new Size(12, 15); 115 | labelMKey.TabIndex = 7; 116 | labelMKey.Text = "-"; 117 | // 118 | // labelHwId 119 | // 120 | labelHwId.AutoSize = true; 121 | labelHwId.Location = new Point(89, 104); 122 | labelHwId.Name = "labelHwId"; 123 | labelHwId.Size = new Size(12, 15); 124 | labelHwId.TabIndex = 8; 125 | labelHwId.Text = "-"; 126 | // 127 | // openFileDialogPermit 128 | // 129 | openFileDialogPermit.FileName = "PERMIT.TXT"; 130 | openFileDialogPermit.Filter = "Permit files|*.txt"; 131 | // 132 | // buttonDecryptCells 133 | // 134 | buttonDecryptCells.Location = new Point(12, 145); 135 | buttonDecryptCells.Name = "buttonDecryptCells"; 136 | buttonDecryptCells.Size = new Size(269, 79); 137 | buttonDecryptCells.TabIndex = 9; 138 | buttonDecryptCells.Text = "Decrypt cells. First select the PERMIT.TXT file, then select the (root) folder which contains the encrypted cells."; 139 | buttonDecryptCells.UseVisualStyleBackColor = true; 140 | buttonDecryptCells.Click += buttonDecryptCells_Click; 141 | // 142 | // label5 143 | // 144 | label5.AutoSize = true; 145 | label5.Location = new Point(393, 15); 146 | label5.Name = "label5"; 147 | label5.Size = new Size(23, 15); 148 | label5.TabIndex = 10; 149 | label5.Text = "OR"; 150 | // 151 | // buttonCalculateFromCellPermit 152 | // 153 | buttonCalculateFromCellPermit.Location = new Point(422, 11); 154 | buttonCalculateFromCellPermit.Name = "buttonCalculateFromCellPermit"; 155 | buttonCalculateFromCellPermit.Size = new Size(182, 23); 156 | buttonCalculateFromCellPermit.TabIndex = 11; 157 | buttonCalculateFromCellPermit.Text = "Calculate from PERMIT.TXT"; 158 | buttonCalculateFromCellPermit.UseVisualStyleBackColor = true; 159 | buttonCalculateFromCellPermit.Click += buttonCalculateFromCellPermit_Click; 160 | // 161 | // Form1 162 | // 163 | AutoScaleDimensions = new SizeF(7F, 15F); 164 | AutoScaleMode = AutoScaleMode.Font; 165 | ClientSize = new Size(800, 450); 166 | Controls.Add(buttonCalculateFromCellPermit); 167 | Controls.Add(label5); 168 | Controls.Add(buttonDecryptCells); 169 | Controls.Add(labelHwId); 170 | Controls.Add(labelMKey); 171 | Controls.Add(label4); 172 | Controls.Add(label3); 173 | Controls.Add(label2); 174 | Controls.Add(labelMId); 175 | Controls.Add(buttonCalculate); 176 | Controls.Add(label1); 177 | Controls.Add(textBoxUserPermit); 178 | Name = "Form1"; 179 | Text = "S63 Tools"; 180 | ResumeLayout(false); 181 | PerformLayout(); 182 | } 183 | 184 | #endregion 185 | 186 | private TextBox textBoxUserPermit; 187 | private Label label1; 188 | private Button buttonCalculate; 189 | private Label labelMId; 190 | private Label label2; 191 | private Label label3; 192 | private Label label4; 193 | private Label labelMKey; 194 | private Label labelHwId; 195 | private OpenFileDialog openFileDialogPermit; 196 | private Button buttonDecryptCells; 197 | private FolderBrowserDialog folderBrowserDialog1; 198 | private Label label5; 199 | private Button buttonCalculateFromCellPermit; 200 | } 201 | } -------------------------------------------------------------------------------- /S63Tools/S63Tools/S63Tools.cs: -------------------------------------------------------------------------------- 1 | using System.Buffers; 2 | using System.Buffers.Binary; 3 | using System.Buffers.Text; 4 | using System.Diagnostics; 5 | using System.Text; 6 | 7 | namespace S63Tools; 8 | 9 | public class S63Tools 10 | { 11 | private static readonly byte[] Hex = "0123456789ABCDEF"u8.ToArray(); 12 | 13 | public static string CreateUserPermit(byte[] hwId, byte[] key, ushort mId) 14 | { 15 | if (hwId.Length != 5) 16 | { 17 | throw new Exception("Invalid HW ID length."); 18 | } 19 | 20 | Span hwIdBlock = stackalloc byte[8]; 21 | hwId.CopyTo(hwIdBlock); 22 | hwIdBlock[5] = 3; 23 | hwIdBlock[6] = 3; 24 | hwIdBlock[7] = 3; 25 | 26 | var blow = new BlowFish(key); 27 | var enc = blow.EncryptECB(hwIdBlock); 28 | 29 | var permit = new byte[28]; 30 | for (int i = 0; i < enc.Length; i++) 31 | { 32 | Utf8Formatter.TryFormat(enc[i], permit.AsSpan(2 * i), out _, new StandardFormat('X', 2)); 33 | } 34 | 35 | uint crc = Crc32.Compute(permit.AsSpan(0, 16)); 36 | Utf8Formatter.TryFormat(crc, permit.AsSpan(16), out _, new StandardFormat('X', 8)); 37 | Utf8Formatter.TryFormat(mId, permit.AsSpan(24), out _, new StandardFormat('X', 4)); 38 | 39 | return Encoding.ASCII.GetString(permit); 40 | } 41 | 42 | public static byte[] DecryptUserPermit(string userPermit, byte[] key, out ushort mId) 43 | { 44 | var permit = Encoding.ASCII.GetBytes(userPermit); 45 | uint crc = Crc32.Compute(permit.AsSpan(0, 16)); 46 | 47 | Utf8Parser.TryParse(permit.AsSpan(16, 8), out uint crc2, out _, 'X'); 48 | 49 | if (crc != crc2) 50 | { 51 | throw new Exception("Invalid CRC."); 52 | } 53 | 54 | Utf8Parser.TryParse(permit.AsSpan(24, 4), out mId, out _, 'X'); 55 | 56 | var blow = new BlowFish(key); 57 | Span hwIdBlock = stackalloc byte[8]; 58 | for (int i = 0; i < hwIdBlock.Length; i++) 59 | { 60 | Utf8Parser.TryParse(permit.AsSpan(i * 2, 2), out byte b, out _, 'X'); 61 | hwIdBlock[i] = b; 62 | } 63 | 64 | hwIdBlock = blow.DecryptCBC(hwIdBlock); 65 | 66 | if (hwIdBlock.Length != 8) 67 | { 68 | throw new Exception("Invalid HW ID length."); 69 | } 70 | 71 | if (hwIdBlock[5] != 3 || hwIdBlock[6] != 3 || hwIdBlock[7] != 3) 72 | { 73 | throw new Exception("Invalid HW ID."); 74 | } 75 | 76 | return hwIdBlock.Slice(0, 5).ToArray(); 77 | } 78 | 79 | public static string CreateCellPermit(byte[] hwId, string cellName, DateTime expiryDate, byte[] ck1, byte[] ck2) 80 | { 81 | if (hwId.Length != 5) 82 | { 83 | throw new Exception("Invalid HW ID length."); 84 | } 85 | 86 | if (ck1.Length != 5) 87 | { 88 | throw new Exception("Invalid Cell Key 1 length."); 89 | } 90 | 91 | if (ck2.Length != 5) 92 | { 93 | throw new Exception("Invalid Cell Key 2 length."); 94 | } 95 | 96 | var hwId6 = new byte[6]; 97 | hwId.AsSpan().CopyTo(hwId6); 98 | hwId6[5] = hwId[0]; 99 | 100 | var permit = new byte[64]; 101 | Encoding.ASCII.GetBytes(cellName, permit.AsSpan()); 102 | Utf8Formatter.TryFormat(expiryDate.Year, permit.AsSpan(8), out _, new StandardFormat('D', 4)); 103 | Utf8Formatter.TryFormat(expiryDate.Month, permit.AsSpan(12), out _, new StandardFormat('D', 2)); 104 | Utf8Formatter.TryFormat(expiryDate.Day, permit.AsSpan(14), out _, new StandardFormat('D', 2)); 105 | 106 | Span block = stackalloc byte[8]; 107 | var blow = new BlowFish(hwId6); 108 | 109 | ck1.CopyTo(block); 110 | block[5] = 3; 111 | block[6] = 3; 112 | block[7] = 3; 113 | 114 | var eck = blow.EncryptECB(block); 115 | for (int i = 0; i < eck.Length; i++) 116 | { 117 | Utf8Formatter.TryFormat(eck[i], permit.AsSpan(16 + 2 * i), out _, new StandardFormat('X', 2)); 118 | } 119 | 120 | ck2.CopyTo(block); 121 | block[5] = 3; 122 | block[6] = 3; 123 | block[7] = 3; 124 | 125 | eck = blow.EncryptECB(block); 126 | for (int i = 0; i < eck.Length; i++) 127 | { 128 | Utf8Formatter.TryFormat(eck[i], permit.AsSpan(32 + 2 * i), out _, new StandardFormat('X', 2)); 129 | } 130 | 131 | uint crc = Crc32.Compute(permit.AsSpan(0, 48)); 132 | 133 | BinaryPrimitives.TryWriteUInt32BigEndian(block, crc); 134 | block[4] = 4; 135 | block[5] = 4; 136 | block[6] = 4; 137 | block[7] = 4; 138 | 139 | var encHash = blow.EncryptECB(block); 140 | for (int i = 0; i < encHash.Length; i++) 141 | { 142 | Utf8Formatter.TryFormat(encHash[i], permit.AsSpan(48 + 2 * i), out _, new StandardFormat('X', 2)); 143 | } 144 | 145 | return Encoding.ASCII.GetString(permit); 146 | } 147 | 148 | public static bool TryDecryptCellPermit(string cellPermit, byte[] hwId, out byte[] ck1, out byte[] ck2) 149 | { 150 | var permit = Encoding.ASCII.GetBytes(cellPermit); 151 | uint crc = Crc32.Compute(permit.AsSpan(0, 48)); 152 | 153 | Span hwId6 = stackalloc byte[6]; 154 | hwId.AsSpan().CopyTo(hwId6); 155 | hwId6[5] = hwId[0]; 156 | 157 | Span block = stackalloc byte[8]; 158 | var blow = new BlowFish(hwId6); 159 | 160 | for (int i = 0; i < 8; i++) 161 | { 162 | Utf8Parser.TryParse(permit.AsSpan(48 + i * 2, 2), out byte b, out _, 'X'); 163 | block[i] = b; 164 | } 165 | 166 | var crcBlock = blow.DecryptCBC(block); 167 | if (crcBlock[4] != 4 || crcBlock[5] != 4 || crcBlock[6] != 4 || crcBlock[7] != 4) 168 | { 169 | // Invalid CRC. 170 | ck1 = null; 171 | ck2 = null; 172 | return false; 173 | } 174 | 175 | uint crc2 = BinaryPrimitives.ReadUInt32BigEndian(crcBlock); 176 | if (crc != crc2) 177 | { 178 | // Invalid CRC. 179 | ck1 = null; 180 | ck2 = null; 181 | return false; 182 | } 183 | 184 | for (int i = 0; i < 8; i++) 185 | { 186 | Utf8Parser.TryParse(permit.AsSpan(16 + i * 2, 2), out byte b, out _, 'X'); 187 | block[i] = b; 188 | } 189 | 190 | var ck1Block = blow.DecryptCBC(block); 191 | if (ck1Block[5] != 3 || ck1Block[6] != 3 || ck1Block[7] != 3) 192 | { 193 | // Invalid Cell Key 1. 194 | ck1 = null; 195 | ck2 = null; 196 | return false; 197 | } 198 | 199 | ck1 = ck1Block.AsSpan(0, 5).ToArray(); 200 | 201 | for (int i = 0; i < 8; i++) 202 | { 203 | Utf8Parser.TryParse(permit.AsSpan(32 + i * 2, 2), out byte b, out _, 'X'); 204 | block[i] = b; 205 | } 206 | 207 | var ck2Block = blow.DecryptCBC(block); 208 | if (ck2Block[5] != 3 || ck2Block[6] != 3 || ck2Block[7] != 3) 209 | { 210 | // Invalid Cell Key 2. 211 | ck1 = null; 212 | ck2 = null; 213 | return false; 214 | } 215 | 216 | ck2 = ck2Block.AsSpan(0, 5).ToArray(); 217 | return true; 218 | } 219 | 220 | public static byte[]? HackUserPermit(string userPermit, out ushort mId, out byte[]? keyBytes) 221 | { 222 | var permit = Encoding.ASCII.GetBytes(userPermit); 223 | if (permit.Length < 28) 224 | { 225 | throw new Exception("Invalid user permit."); 226 | } 227 | 228 | uint crc = Crc32.Compute(permit.AsSpan(0, 16)); 229 | 230 | Utf8Parser.TryParse(permit.AsSpan(16, 8), out uint crc2, out _, 'X'); 231 | 232 | if (crc != crc2) 233 | { 234 | throw new Exception("Invalid CRC."); 235 | } 236 | 237 | Utf8Parser.TryParse(permit.AsSpan(24, 4), out mId, out _, 'X'); 238 | 239 | Span hwIdBlockDef = stackalloc byte[8]; 240 | for (int i = 0; i < hwIdBlockDef.Length; i++) 241 | { 242 | Utf8Parser.TryParse(permit.AsSpan(i * 2, 2), out byte b, out _, 'X'); 243 | hwIdBlockDef[i] = b; 244 | } 245 | 246 | long t = Stopwatch.GetTimestamp(); 247 | var finder = new KeyFinder(hwIdBlockDef); 248 | finder.FindKey(); 249 | 250 | var elapsed = Stopwatch.GetElapsedTime(t); 251 | Debug.WriteLine("elapsed: " + elapsed); 252 | 253 | keyBytes = finder.FoundKey; 254 | return finder.FoundHwId; 255 | } 256 | 257 | public static byte[]? HackCellPermit(string permitPath) 258 | { 259 | var lines = File.ReadAllLines(permitPath); 260 | string cellPermit = null; 261 | foreach (string line in lines) 262 | { 263 | if (line.StartsWith(':')) 264 | { 265 | continue; 266 | } 267 | 268 | var parts = line.Split(','); 269 | if (parts.Length > 2) 270 | { 271 | cellPermit = parts[0]; 272 | } 273 | } 274 | 275 | if (cellPermit != null) 276 | { 277 | var permit = Encoding.ASCII.GetBytes(cellPermit); 278 | uint crc = Crc32.Compute(permit.AsSpan(0, 48)); 279 | 280 | Span blockData = stackalloc byte[24]; 281 | for (int i = 0; i < 24; i++) 282 | { 283 | Utf8Parser.TryParse(permit.AsSpan(16 + i * 2, 2), out byte b, out _, 'X'); 284 | blockData[i] = b; 285 | } 286 | 287 | long t = Stopwatch.GetTimestamp(); 288 | var finder = new KeyFinder(blockData, crc); 289 | finder.FindHardwareId(); 290 | 291 | var elapsed = Stopwatch.GetElapsedTime(t); 292 | Debug.WriteLine("elapsed: " + elapsed); 293 | 294 | return finder.FoundHwId; 295 | } 296 | 297 | throw new Exception("Failed to decrypt the permits."); 298 | } 299 | 300 | private class KeyFinder 301 | { 302 | private readonly byte[] _blockData; 303 | private readonly uint _crc; 304 | private int _i; 305 | 306 | public volatile byte[]? FoundKey; 307 | public volatile byte[]? FoundHwId; 308 | 309 | public KeyFinder(Span hwIdBlockDef, uint crc = 0) 310 | { 311 | _blockData = hwIdBlockDef.ToArray(); 312 | _crc = crc; 313 | } 314 | 315 | private void FindKeyThreadFunc() 316 | { 317 | var key = new byte[5]; 318 | Span hwIdBlock = stackalloc byte[8]; 319 | var blow = new BlowFish(); 320 | 321 | while (true) 322 | { 323 | int i = Interlocked.Increment(ref _i) - 1; 324 | if (i >= 0x100000 || FoundKey != null) 325 | { 326 | break; 327 | } 328 | 329 | key[4] = Hex[i & 0xf]; 330 | key[3] = Hex[(i >> 4) & 0xf]; 331 | key[2] = Hex[(i >> 8) & 0xf]; 332 | key[1] = Hex[(i >> 12) & 0xf]; 333 | key[0] = Hex[(i >> 16) & 0xf]; 334 | 335 | blow.SetupKey5(key); 336 | 337 | _blockData.CopyTo(hwIdBlock); 338 | blow.DecryptCBC8(hwIdBlock); 339 | 340 | if (hwIdBlock[5] != 3 || hwIdBlock[6] != 3 || hwIdBlock[7] != 3) 341 | { 342 | continue; 343 | } 344 | 345 | FoundKey = key; 346 | FoundHwId = hwIdBlock.Slice(0, 5).ToArray(); 347 | break; 348 | } 349 | } 350 | 351 | private void FindHwIdThreadFunc() 352 | { 353 | Span hwId6 = stackalloc byte[6]; 354 | var block1 = _blockData.AsSpan(0, 8); 355 | var block2 = _blockData.AsSpan(8, 8); 356 | var blockCrc = _blockData.AsSpan(16, 8); 357 | while (true) 358 | { 359 | int i = Interlocked.Increment(ref _i) - 1; 360 | if (i >= 0x100000 || FoundHwId != null) 361 | { 362 | break; 363 | } 364 | 365 | hwId6[4] = Hex[i & 0xf]; 366 | hwId6[3] = Hex[(i >> 4) & 0xf]; 367 | hwId6[2] = Hex[(i >> 8) & 0xf]; 368 | hwId6[1] = Hex[(i >> 12) & 0xf]; 369 | hwId6[0] = Hex[(i >> 16) & 0xf]; 370 | hwId6[5] = hwId6[0]; 371 | 372 | var blow = new BlowFish(hwId6); 373 | 374 | var crcBlock = blow.DecryptCBC(blockCrc); 375 | if (crcBlock[4] != 4 || crcBlock[5] != 4 || crcBlock[6] != 4 || crcBlock[7] != 4) 376 | { 377 | // Invalid CRC. 378 | continue; 379 | } 380 | 381 | uint crc = BinaryPrimitives.ReadUInt32BigEndian(crcBlock); 382 | if (_crc != crc) 383 | { 384 | // Invalid CRC. 385 | continue; 386 | } 387 | 388 | var ck1Block = blow.DecryptCBC(block1); 389 | if (ck1Block[5] != 3 || ck1Block[6] != 3 || ck1Block[7] != 3) 390 | { 391 | // Invalid Cell Key 1. 392 | continue; 393 | } 394 | 395 | var ck2Block = blow.DecryptCBC(block2); 396 | if (ck2Block[5] != 3 || ck2Block[6] != 3 || ck2Block[7] != 3) 397 | { 398 | // Invalid Cell Key 2. 399 | continue; 400 | } 401 | 402 | //ck1 = ck1Block.AsSpan(0, 5).ToArray(); 403 | //ck2 = ck2Block.AsSpan(0, 5).ToArray(); 404 | FoundHwId = hwId6.Slice(0, 5).ToArray(); 405 | break; 406 | } 407 | } 408 | 409 | private void Start(ThreadStart threadFunc) 410 | { 411 | var threads = new List(); 412 | for (int i = 0; i < Environment.ProcessorCount; i++) 413 | { 414 | var t = new Thread(threadFunc); 415 | threads.Add(t); 416 | t.Start(); 417 | } 418 | 419 | foreach (var thread in threads) 420 | { 421 | thread.Join(); 422 | } 423 | } 424 | 425 | public void FindKey() 426 | { 427 | Start(FindKeyThreadFunc); 428 | } 429 | 430 | public void FindHardwareId() 431 | { 432 | Start(FindHwIdThreadFunc); 433 | } 434 | } 435 | 436 | public static void LoadPermit(string permitPath, Dictionary permits, byte[][] hardwareIds) 437 | { 438 | Exception exception = null; 439 | foreach (var hardwareId in hardwareIds) 440 | { 441 | try 442 | { 443 | if (TryLoadPermit(permitPath, permits, hardwareId)) 444 | { 445 | return; 446 | } 447 | } 448 | catch (Exception ex) 449 | { 450 | exception = ex; 451 | } 452 | } 453 | 454 | if (exception != null) 455 | { 456 | throw exception; 457 | } 458 | 459 | throw new Exception("Failed to load the permits."); 460 | } 461 | 462 | public static bool TryLoadPermit(string permitPath, Dictionary permits, byte[] hardwareId) 463 | { 464 | var lines = File.ReadAllLines(permitPath); 465 | foreach (string line in lines) 466 | { 467 | if (line.StartsWith(':')) 468 | { 469 | continue; 470 | } 471 | 472 | var parts = line.Split(','); 473 | if (parts.Length > 2) 474 | { 475 | string permit = parts[0]; 476 | if (!TryDecryptCellPermit(permit, hardwareId, out var ck1, out var ck2)) 477 | { 478 | return false; 479 | } 480 | 481 | string cellName = permit.Substring(0, 8); 482 | permits[cellName] = (ck1, ck2); 483 | } 484 | } 485 | 486 | return true; 487 | } 488 | } 489 | -------------------------------------------------------------------------------- /S63Tools/S63Tools/BlowFish.cs: -------------------------------------------------------------------------------- 1 | using System; 2 | using System.Buffers.Binary; 3 | using System.Collections.Generic; 4 | using System.IO; 5 | using System.Linq; 6 | using System.Security.Cryptography; 7 | 8 | /// 9 | /// Blowfish encryption class. 10 | /// 11 | public sealed class BlowFish : IDisposable 12 | { 13 | // SBLOCKS ARE THE HEX DIGITS OF PI. 14 | // The amount of hex digits can be increased if you want to experiment with more rounds and longer key lengths 15 | private static readonly uint[] SetupP = { 16 | 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0, 17 | 0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c, 18 | 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b, 19 | }; 20 | 21 | private static readonly uint[] SetupS0 = { 22 | 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7, 0xb8e1afed, 0x6a267e96, 23 | 0xba7c9045, 0xf12c7f99, 0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16, 24 | 0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e, 0x0d95748f, 0x728eb658, 25 | 0x718bcd58, 0x82154aee, 0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013, 26 | 0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef, 0x8e79dcb0, 0x603a180e, 27 | 0x6c9e0e8b, 0xb01e8a3e, 0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60, 28 | 0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440, 0x55ca396a, 0x2aab10b6, 29 | 0xb4cc5c34, 0x1141e8ce, 0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a, 30 | 0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e, 0xafd6ba33, 0x6c24cf5c, 31 | 0x7a325381, 0x28958677, 0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193, 32 | 0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032, 0xef845d5d, 0xe98575b1, 33 | 0xdc262302, 0xeb651b88, 0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239, 34 | 0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e, 0x21c66842, 0xf6e96c9a, 35 | 0x670c9c61, 0xabd388f0, 0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3, 36 | 0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98, 0xa1f1651d, 0x39af0176, 37 | 0x66ca593e, 0x82430e88, 0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe, 38 | 0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6, 0x4ed3aa62, 0x363f7706, 39 | 0x1bfedf72, 0x429b023d, 0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b, 40 | 0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7, 0xe3fe501a, 0xb6794c3b, 41 | 0x976ce0bd, 0x04c006ba, 0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463, 42 | 0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f, 0x6dfc511f, 0x9b30952c, 43 | 0xcc814544, 0xaf5ebd09, 0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3, 44 | 0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb, 0x5579c0bd, 0x1a60320a, 45 | 0xd6a100c6, 0x402c7279, 0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8, 46 | 0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab, 0x323db5fa, 0xfd238760, 47 | 0x53317b48, 0x3e00df82, 0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db, 48 | 0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573, 0x695b27b0, 0xbbca58c8, 49 | 0xe1ffa35d, 0xb8f011a0, 0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b, 50 | 0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790, 0xe1ddf2da, 0xa4cb7e33, 51 | 0x62fb1341, 0xcee4c6e8, 0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4, 52 | 0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0, 0xd08ed1d0, 0xafc725e0, 53 | 0x8e3c5b2f, 0x8e7594b7, 0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c, 54 | 0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad, 0x2f2f2218, 0xbe0e1777, 55 | 0xea752dfe, 0x8b021fa1, 0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299, 56 | 0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9, 0x165fa266, 0x80957705, 57 | 0x93cc7314, 0x211a1477, 0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf, 58 | 0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49, 0x00250e2d, 0x2071b35e, 59 | 0x226800bb, 0x57b8e0af, 0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa, 60 | 0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5, 0x83260376, 0x6295cfa9, 61 | 0x11c81968, 0x4e734a41, 0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915, 62 | 0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400, 0x08ba6fb5, 0x571be91f, 63 | 0xf296ec6b, 0x2a0dd915, 0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664, 64 | 0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a, 65 | }; 66 | 67 | private static readonly uint[] SetupS1 = { 68 | 0x4b7a70e9, 0xb5b32944, 0xdb75092e, 0xc4192623, 0xad6ea6b0, 0x49a7df7d, 69 | 0x9cee60b8, 0x8fedb266, 0xecaa8c71, 0x699a17ff, 0x5664526c, 0xc2b19ee1, 70 | 0x193602a5, 0x75094c29, 0xa0591340, 0xe4183a3e, 0x3f54989a, 0x5b429d65, 71 | 0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07, 0xefe830f5, 0x4d2d38e6, 0xf0255dc1, 72 | 0x4cdd2086, 0x8470eb26, 0x6382e9c6, 0x021ecc5e, 0x09686b3f, 0x3ebaefc9, 73 | 0x3c971814, 0x6b6a70a1, 0x687f3584, 0x52a0e286, 0xb79c5305, 0xaa500737, 74 | 0x3e07841c, 0x7fdeae5c, 0x8e7d44ec, 0x5716f2b8, 0xb03ada37, 0xf0500c0d, 75 | 0xf01c1f04, 0x0200b3ff, 0xae0cf51a, 0x3cb574b2, 0x25837a58, 0xdc0921bd, 76 | 0xd19113f9, 0x7ca92ff6, 0x94324773, 0x22f54701, 0x3ae5e581, 0x37c2dadc, 77 | 0xc8b57634, 0x9af3dda7, 0xa9446146, 0x0fd0030e, 0xecc8c73e, 0xa4751e41, 78 | 0xe238cd99, 0x3bea0e2f, 0x3280bba1, 0x183eb331, 0x4e548b38, 0x4f6db908, 79 | 0x6f420d03, 0xf60a04bf, 0x2cb81290, 0x24977c79, 0x5679b072, 0xbcaf89af, 80 | 0xde9a771f, 0xd9930810, 0xb38bae12, 0xdccf3f2e, 0x5512721f, 0x2e6b7124, 81 | 0x501adde6, 0x9f84cd87, 0x7a584718, 0x7408da17, 0xbc9f9abc, 0xe94b7d8c, 82 | 0xec7aec3a, 0xdb851dfa, 0x63094366, 0xc464c3d2, 0xef1c1847, 0x3215d908, 83 | 0xdd433b37, 0x24c2ba16, 0x12a14d43, 0x2a65c451, 0x50940002, 0x133ae4dd, 84 | 0x71dff89e, 0x10314e55, 0x81ac77d6, 0x5f11199b, 0x043556f1, 0xd7a3c76b, 85 | 0x3c11183b, 0x5924a509, 0xf28fe6ed, 0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e, 86 | 0x86e34570, 0xeae96fb1, 0x860e5e0a, 0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa, 87 | 0x2965dcb9, 0x99e71d0f, 0x803e89d6, 0x5266c825, 0x2e4cc978, 0x9c10b36a, 88 | 0xc6150eba, 0x94e2ea78, 0xa5fc3c53, 0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d, 89 | 0x1939260f, 0x19c27960, 0x5223a708, 0xf71312b6, 0xebadfe6e, 0xeac31f66, 90 | 0xe3bc4595, 0xa67bc883, 0xb17f37d1, 0x018cff28, 0xc332ddef, 0xbe6c5aa5, 91 | 0x65582185, 0x68ab9802, 0xeecea50f, 0xdb2f953b, 0x2aef7dad, 0x5b6e2f84, 92 | 0x1521b628, 0x29076170, 0xecdd4775, 0x619f1510, 0x13cca830, 0xeb61bd96, 93 | 0x0334fe1e, 0xaa0363cf, 0xb5735c90, 0x4c70a239, 0xd59e9e0b, 0xcbaade14, 94 | 0xeecc86bc, 0x60622ca7, 0x9cab5cab, 0xb2f3846e, 0x648b1eaf, 0x19bdf0ca, 95 | 0xa02369b9, 0x655abb50, 0x40685a32, 0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7, 96 | 0x9b540b19, 0x875fa099, 0x95f7997e, 0x623d7da8, 0xf837889a, 0x97e32d77, 97 | 0x11ed935f, 0x16681281, 0x0e358829, 0xc7e61fd6, 0x96dedfa1, 0x7858ba99, 98 | 0x57f584a5, 0x1b227263, 0x9b83c3ff, 0x1ac24696, 0xcdb30aeb, 0x532e3054, 99 | 0x8fd948e4, 0x6dbc3128, 0x58ebf2ef, 0x34c6ffea, 0xfe28ed61, 0xee7c3c73, 100 | 0x5d4a14d9, 0xe864b7e3, 0x42105d14, 0x203e13e0, 0x45eee2b6, 0xa3aaabea, 101 | 0xdb6c4f15, 0xfacb4fd0, 0xc742f442, 0xef6abbb5, 0x654f3b1d, 0x41cd2105, 102 | 0xd81e799e, 0x86854dc7, 0xe44b476a, 0x3d816250, 0xcf62a1f2, 0x5b8d2646, 103 | 0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3, 0x69cb7492, 0x47848a0b, 0x5692b285, 104 | 0x095bbf00, 0xad19489d, 0x1462b174, 0x23820e00, 0x58428d2a, 0x0c55f5ea, 105 | 0x1dadf43e, 0x233f7061, 0x3372f092, 0x8d937e41, 0xd65fecf1, 0x6c223bdb, 106 | 0x7cde3759, 0xcbee7460, 0x4085f2a7, 0xce77326e, 0xa6078084, 0x19f8509e, 107 | 0xe8efd855, 0x61d99735, 0xa969a7aa, 0xc50c06c2, 0x5a04abfc, 0x800bcadc, 108 | 0x9e447a2e, 0xc3453484, 0xfdd56705, 0x0e1e9ec9, 0xdb73dbd3, 0x105588cd, 109 | 0x675fda79, 0xe3674340, 0xc5c43465, 0x713e38d8, 0x3d28f89e, 0xf16dff20, 110 | 0x153e21e7, 0x8fb03d4a, 0xe6e39f2b, 0xdb83adf7, 111 | }; 112 | 113 | private static readonly uint[] SetupS2 = { 114 | 0xe93d5a68, 0x948140f7, 0xf64c261c, 0x94692934, 0x411520f7, 0x7602d4f7, 115 | 0xbcf46b2e, 0xd4a20068, 0xd4082471, 0x3320f46a, 0x43b7d4b7, 0x500061af, 116 | 0x1e39f62e, 0x97244546, 0x14214f74, 0xbf8b8840, 0x4d95fc1d, 0x96b591af, 117 | 0x70f4ddd3, 0x66a02f45, 0xbfbc09ec, 0x03bd9785, 0x7fac6dd0, 0x31cb8504, 118 | 0x96eb27b3, 0x55fd3941, 0xda2547e6, 0xabca0a9a, 0x28507825, 0x530429f4, 119 | 0x0a2c86da, 0xe9b66dfb, 0x68dc1462, 0xd7486900, 0x680ec0a4, 0x27a18dee, 120 | 0x4f3ffea2, 0xe887ad8c, 0xb58ce006, 0x7af4d6b6, 0xaace1e7c, 0xd3375fec, 121 | 0xce78a399, 0x406b2a42, 0x20fe9e35, 0xd9f385b9, 0xee39d7ab, 0x3b124e8b, 122 | 0x1dc9faf7, 0x4b6d1856, 0x26a36631, 0xeae397b2, 0x3a6efa74, 0xdd5b4332, 123 | 0x6841e7f7, 0xca7820fb, 0xfb0af54e, 0xd8feb397, 0x454056ac, 0xba489527, 124 | 0x55533a3a, 0x20838d87, 0xfe6ba9b7, 0xd096954b, 0x55a867bc, 0xa1159a58, 125 | 0xcca92963, 0x99e1db33, 0xa62a4a56, 0x3f3125f9, 0x5ef47e1c, 0x9029317c, 126 | 0xfdf8e802, 0x04272f70, 0x80bb155c, 0x05282ce3, 0x95c11548, 0xe4c66d22, 127 | 0x48c1133f, 0xc70f86dc, 0x07f9c9ee, 0x41041f0f, 0x404779a4, 0x5d886e17, 128 | 0x325f51eb, 0xd59bc0d1, 0xf2bcc18f, 0x41113564, 0x257b7834, 0x602a9c60, 129 | 0xdff8e8a3, 0x1f636c1b, 0x0e12b4c2, 0x02e1329e, 0xaf664fd1, 0xcad18115, 130 | 0x6b2395e0, 0x333e92e1, 0x3b240b62, 0xeebeb922, 0x85b2a20e, 0xe6ba0d99, 131 | 0xde720c8c, 0x2da2f728, 0xd0127845, 0x95b794fd, 0x647d0862, 0xe7ccf5f0, 132 | 0x5449a36f, 0x877d48fa, 0xc39dfd27, 0xf33e8d1e, 0x0a476341, 0x992eff74, 133 | 0x3a6f6eab, 0xf4f8fd37, 0xa812dc60, 0xa1ebddf8, 0x991be14c, 0xdb6e6b0d, 134 | 0xc67b5510, 0x6d672c37, 0x2765d43b, 0xdcd0e804, 0xf1290dc7, 0xcc00ffa3, 135 | 0xb5390f92, 0x690fed0b, 0x667b9ffb, 0xcedb7d9c, 0xa091cf0b, 0xd9155ea3, 136 | 0xbb132f88, 0x515bad24, 0x7b9479bf, 0x763bd6eb, 0x37392eb3, 0xcc115979, 137 | 0x8026e297, 0xf42e312d, 0x6842ada7, 0xc66a2b3b, 0x12754ccc, 0x782ef11c, 138 | 0x6a124237, 0xb79251e7, 0x06a1bbe6, 0x4bfb6350, 0x1a6b1018, 0x11caedfa, 139 | 0x3d25bdd8, 0xe2e1c3c9, 0x44421659, 0x0a121386, 0xd90cec6e, 0xd5abea2a, 140 | 0x64af674e, 0xda86a85f, 0xbebfe988, 0x64e4c3fe, 0x9dbc8057, 0xf0f7c086, 141 | 0x60787bf8, 0x6003604d, 0xd1fd8346, 0xf6381fb0, 0x7745ae04, 0xd736fccc, 142 | 0x83426b33, 0xf01eab71, 0xb0804187, 0x3c005e5f, 0x77a057be, 0xbde8ae24, 143 | 0x55464299, 0xbf582e61, 0x4e58f48f, 0xf2ddfda2, 0xf474ef38, 0x8789bdc2, 144 | 0x5366f9c3, 0xc8b38e74, 0xb475f255, 0x46fcd9b9, 0x7aeb2661, 0x8b1ddf84, 145 | 0x846a0e79, 0x915f95e2, 0x466e598e, 0x20b45770, 0x8cd55591, 0xc902de4c, 146 | 0xb90bace1, 0xbb8205d0, 0x11a86248, 0x7574a99e, 0xb77f19b6, 0xe0a9dc09, 147 | 0x662d09a1, 0xc4324633, 0xe85a1f02, 0x09f0be8c, 0x4a99a025, 0x1d6efe10, 148 | 0x1ab93d1d, 0x0ba5a4df, 0xa186f20f, 0x2868f169, 0xdcb7da83, 0x573906fe, 149 | 0xa1e2ce9b, 0x4fcd7f52, 0x50115e01, 0xa70683fa, 0xa002b5c4, 0x0de6d027, 150 | 0x9af88c27, 0x773f8641, 0xc3604c06, 0x61a806b5, 0xf0177a28, 0xc0f586e0, 151 | 0x006058aa, 0x30dc7d62, 0x11e69ed7, 0x2338ea63, 0x53c2dd94, 0xc2c21634, 152 | 0xbbcbee56, 0x90bcb6de, 0xebfc7da1, 0xce591d76, 0x6f05e409, 0x4b7c0188, 153 | 0x39720a3d, 0x7c927c24, 0x86e3725f, 0x724d9db9, 0x1ac15bb4, 0xd39eb8fc, 154 | 0xed545578, 0x08fca5b5, 0xd83d7cd3, 0x4dad0fc4, 0x1e50ef5e, 0xb161e6f8, 155 | 0xa28514d9, 0x6c51133c, 0x6fd5c7e7, 0x56e14ec4, 0x362abfce, 0xddc6c837, 156 | 0xd79a3234, 0x92638212, 0x670efa8e, 0x406000e0, 157 | }; 158 | 159 | private static readonly uint[] SetupS3 = { 160 | 0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742, 161 | 0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b, 162 | 0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79, 163 | 0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6, 164 | 0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a, 165 | 0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4, 166 | 0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1, 167 | 0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59, 168 | 0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797, 169 | 0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28, 170 | 0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6, 171 | 0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28, 172 | 0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba, 173 | 0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a, 174 | 0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5, 175 | 0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f, 176 | 0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce, 177 | 0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680, 178 | 0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd, 179 | 0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb, 180 | 0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb, 181 | 0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370, 182 | 0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc, 183 | 0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048, 184 | 0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc, 185 | 0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9, 186 | 0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a, 187 | 0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f, 188 | 0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a, 189 | 0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1, 190 | 0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b, 191 | 0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e, 192 | 0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e, 193 | 0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f, 194 | 0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623, 195 | 0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc, 196 | 0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a, 197 | 0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6, 198 | 0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3, 199 | 0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060, 200 | 0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c, 201 | 0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f, 202 | 0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6, 203 | }; 204 | 205 | private RandomNumberGenerator _randomSource = RandomNumberGenerator.Create(); 206 | 207 | // SBLOCKS 208 | private readonly uint[] _bfS0 = new uint[256]; 209 | private readonly uint[] _bfS1 = new uint[256]; 210 | private readonly uint[] _bfS2 = new uint[256]; 211 | private readonly uint[] _bfS3 = new uint[256]; 212 | private readonly uint[] _bfP = new uint[18]; 213 | 214 | // HALF-BLOCKS 215 | private uint _xlPar; 216 | private uint _xrPar; 217 | private readonly byte[] _initVector = new byte[8]; 218 | 219 | /// 220 | /// Initializes a new instance of the class with the byte key provided. 221 | /// 222 | public BlowFish() 223 | { 224 | } 225 | 226 | /// 227 | /// Initializes a new instance of the class with the byte key provided. 228 | /// 229 | /// Cipher key as a byte array. 230 | public BlowFish(ReadOnlySpan cipherKey) 231 | { 232 | if (cipherKey == null) 233 | { 234 | throw new ArgumentNullException(nameof(cipherKey)); 235 | } 236 | 237 | SetupKey(cipherKey); 238 | } 239 | 240 | /// 241 | /// Gets a value indicating whether this object is disposed or not. 242 | /// 243 | /// 244 | /// A value indicating whether this object is disposed or not. 245 | /// 246 | public bool IsDisposed { get; private set; } 247 | 248 | /// 249 | /// Gets or sets initialization vector for CBC mode. 250 | /// 251 | /// 252 | /// Initialization vector for CBC mode. 253 | /// 254 | public IEnumerable IV 255 | { 256 | get => _initVector; 257 | set 258 | { 259 | if (value == null) 260 | { 261 | _initVector.AsSpan().Clear(); 262 | return; 263 | } 264 | 265 | var iv = value.ToArray().AsSpan(); 266 | if (iv.Length == 8) 267 | { 268 | iv.CopyTo(_initVector); 269 | } 270 | else 271 | { 272 | throw new InvalidOperationException("Invalid IV Size"); 273 | } 274 | } 275 | } 276 | 277 | /// 278 | /// Gets or sets a value indicating whether non standard blowfish mode. 279 | /// 280 | /// 281 | /// A value indicating whether non standard blowfish mode. 282 | /// 283 | public bool NonStandard { get; set; } 284 | 285 | /// 286 | /// XoR encrypts two 8 bit blocks. 287 | /// 288 | /// 8 bit block 1. 289 | /// 8 bit block 2. 290 | public static void XorBlock(Span block, Span iv) 291 | { 292 | if (block.Length is 0) 293 | { 294 | throw new ArgumentNullException(nameof(block)); 295 | } 296 | 297 | if (iv.Length == 0) 298 | { 299 | throw new ArgumentNullException(nameof(iv)); 300 | } 301 | 302 | XorBlock_private(block, iv); 303 | } 304 | 305 | /// 306 | /// XoR encrypts two 8 bit blocks. 307 | /// 308 | /// 8 bit block 1. 309 | /// 8 bit block 2. 310 | public static void XorBlock(Stream block, byte[] iv) 311 | { 312 | if (block is null) 313 | { 314 | throw new ArgumentNullException(nameof(block)); 315 | } 316 | 317 | if (block is MemoryStream ms) 318 | { 319 | XorBlock(ms.GetBuffer(), iv); 320 | } 321 | } 322 | 323 | /// 324 | /// Encrypts a byte array in CBC mode. 325 | /// IV must be created and saved manually. 326 | /// 327 | /// Plaintext data to encrypt. 328 | /// Ciphertext. 329 | public byte[] EncryptCBC(Span pt) 330 | { 331 | int paddedLen = pt.Length; 332 | var pt8 = pt.ToArray(); 333 | 334 | if (paddedLen % 8 != 0) 335 | { 336 | paddedLen = ((paddedLen >> 3) + 1) << 3; 337 | pt8 = new byte[paddedLen]; 338 | pt.CopyTo(pt8); 339 | } 340 | 341 | Crypt_CBC(pt8, false); 342 | return pt8; 343 | } 344 | 345 | /// 346 | /// Encrypts a byte array in CBC mode. 347 | /// IV must be created and saved manually. 348 | /// 349 | /// Plaintext data to encrypt. 350 | public void EncryptCBC8(Span text) 351 | { 352 | XorBlock_private(text, _initVector); 353 | BlockEncrypt(text); 354 | } 355 | 356 | /// 357 | /// Decrypts a byte array in CBC mode. 358 | /// IV must be created and saved manually. 359 | /// 360 | /// Ciphertext data to decrypt. 361 | /// Plaintext. 362 | public byte[] DecryptCBC(Span ct) 363 | { 364 | int paddedLen = ct.Length; 365 | var ct8 = ct.ToArray(); 366 | 367 | if (paddedLen % 8 != 0) 368 | { 369 | paddedLen = ((paddedLen >> 3) + 1) << 3; 370 | ct8 = new byte[paddedLen]; 371 | ct.CopyTo(ct8); 372 | } 373 | 374 | Crypt_CBC(ct8, true); 375 | return ct8; 376 | } 377 | 378 | /// 379 | /// Decrypts a byte array in CBC mode. 380 | /// IV must be created and saved manually. 381 | /// 382 | /// Ciphertext data to decrypt. 383 | public void DecryptCBC8(Span text) 384 | { 385 | BlockDecrypt(text); 386 | XorBlock_private(text, _initVector); 387 | } 388 | 389 | /// 390 | /// Encrypts a byte array in ECB mode. 391 | /// 392 | /// Plaintext data. 393 | /// Ciphertext bytes. 394 | public byte[] EncryptECB(Span pt) 395 | { 396 | if (pt == null) throw new ArgumentNullException(nameof(pt)); 397 | 398 | return Crypt_ECB(pt.ToArray(), false); 399 | } 400 | 401 | /// 402 | /// Decrypts a byte array. 403 | /// 404 | /// Ciphertext byte array. 405 | /// Cipher mode. 406 | /// Plaintext or if mode is not . 407 | public byte[] Decrypt(byte[] cipherText, CipherMode mode) 408 | => mode switch 409 | { 410 | CipherMode.ECB => Decrypt_ECB(cipherText), 411 | CipherMode.CBC or CipherMode.CFB or CipherMode.CTS or CipherMode.OFB or _ => null, 412 | }; 413 | 414 | /// 415 | /// Cleans up the Blowfish items. 416 | /// 417 | public void Dispose() 418 | => Dispose(true); 419 | 420 | /// 421 | /// Creates and sets a random initialization vector. 422 | /// 423 | /// The random IV. 424 | public byte[] SetRandomIV() 425 | { 426 | _randomSource.GetBytes(_initVector); 427 | return _initVector; 428 | } 429 | 430 | private static void XorBlock_private(Span block, Span iv) 431 | { 432 | for (var i = 0; i < block.Length; i++) 433 | { 434 | block[i] ^= iv[i]; 435 | } 436 | } 437 | 438 | private byte[] Decrypt_ECB(byte[] ct) 439 | => Crypt_ECB(ct, true); 440 | 441 | public void SetupKey(ReadOnlySpan cipherKey) 442 | { 443 | SetupP.CopyTo(_bfP.AsSpan()); 444 | 445 | // set up the S blocks 446 | SetupS0.CopyTo(_bfS0.AsSpan()); 447 | SetupS1.CopyTo(_bfS1.AsSpan()); 448 | SetupS2.CopyTo(_bfS2.AsSpan()); 449 | SetupS3.CopyTo(_bfS3.AsSpan()); 450 | if (cipherKey.Length > 56) 451 | { 452 | throw new InvalidOperationException("Key Too Long"); 453 | } 454 | 455 | var j = 0; 456 | for (var i = 0; i < 18; i++) 457 | { 458 | var d = (uint) ((((((cipherKey[j % cipherKey.Length] * 256) + cipherKey[(j + 1) % cipherKey.Length]) * 459 | 256) + cipherKey[(j + 2) % cipherKey.Length]) * 256) + 460 | cipherKey[(j + 3) % cipherKey.Length]); 461 | _bfP[i] ^= d; 462 | j = (j + 4) % cipherKey.Length; 463 | } 464 | 465 | _xlPar = 0; 466 | _xrPar = 0; 467 | for (var i = 0; i < 18; i += 2) 468 | { 469 | Encipher(); 470 | _bfP[i] = _xlPar; 471 | _bfP[i + 1] = _xrPar; 472 | } 473 | 474 | for (var i = 0; i < 256; i += 2) 475 | { 476 | Encipher(); 477 | _bfS0[i] = _xlPar; 478 | _bfS0[i + 1] = _xrPar; 479 | } 480 | 481 | for (var i = 0; i < 256; i += 2) 482 | { 483 | Encipher(); 484 | _bfS1[i] = _xlPar; 485 | _bfS1[i + 1] = _xrPar; 486 | } 487 | 488 | for (var i = 0; i < 256; i += 2) 489 | { 490 | Encipher(); 491 | _bfS2[i] = _xlPar; 492 | _bfS2[i + 1] = _xrPar; 493 | } 494 | 495 | for (var i = 0; i < 256; i += 2) 496 | { 497 | Encipher(); 498 | _bfS3[i] = _xlPar; 499 | _bfS3[i + 1] = _xrPar; 500 | } 501 | } 502 | 503 | public unsafe void SetupKey5(ReadOnlySpan cipherKey) 504 | { 505 | SetupP.CopyTo(_bfP.AsSpan()); 506 | 507 | // set up the S blocks 508 | SetupS0.CopyTo(_bfS0.AsSpan()); 509 | SetupS1.CopyTo(_bfS1.AsSpan()); 510 | SetupS2.CopyTo(_bfS2.AsSpan()); 511 | SetupS3.CopyTo(_bfS3.AsSpan()); 512 | 513 | var j = 0; 514 | fixed (byte* pck = &cipherKey.GetPinnableReference()) 515 | { 516 | uint d0 = (uint)(((pck[0] * 256 + pck[1]) * 256 + pck[2]) * 256 + pck[3]); 517 | uint d1 = (uint)(((pck[1] * 256 + pck[2]) * 256 + pck[3]) * 256 + pck[4]); 518 | uint d2 = (uint)(((pck[2] * 256 + pck[3]) * 256 + pck[4]) * 256 + pck[0]); 519 | uint d3 = (uint)(((pck[3] * 256 + pck[4]) * 256 + pck[0]) * 256 + pck[1]); 520 | uint d4 = (uint)(((pck[4] * 256 + pck[0]) * 256 + pck[1]) * 256 + pck[2]); 521 | 522 | var p = _bfP; 523 | p[0] ^= d0; 524 | p[1] ^= d4; 525 | p[2] ^= d3; 526 | p[3] ^= d2; 527 | p[4] ^= d1; 528 | p[5] ^= d0; 529 | p[6] ^= d4; 530 | p[7] ^= d3; 531 | p[8] ^= d2; 532 | p[9] ^= d1; 533 | p[10] ^= d0; 534 | p[11] ^= d4; 535 | p[12] ^= d3; 536 | p[13] ^= d2; 537 | p[14] ^= d1; 538 | p[15] ^= d0; 539 | p[16] ^= d4; 540 | p[17] ^= d3; 541 | } 542 | 543 | _xlPar = 0; 544 | _xrPar = 0; 545 | for (var i = 0; i < 18; i += 2) 546 | { 547 | Encipher(); 548 | _bfP[i] = _xlPar; 549 | _bfP[i + 1] = _xrPar; 550 | } 551 | 552 | for (var i = 0; i < 256; i += 2) 553 | { 554 | Encipher(); 555 | _bfS0[i] = _xlPar; 556 | _bfS0[i + 1] = _xrPar; 557 | } 558 | 559 | for (var i = 0; i < 256; i += 2) 560 | { 561 | Encipher(); 562 | _bfS1[i] = _xlPar; 563 | _bfS1[i + 1] = _xrPar; 564 | } 565 | 566 | for (var i = 0; i < 256; i += 2) 567 | { 568 | Encipher(); 569 | _bfS2[i] = _xlPar; 570 | _bfS2[i + 1] = _xrPar; 571 | } 572 | 573 | for (var i = 0; i < 256; i += 2) 574 | { 575 | Encipher(); 576 | _bfS3[i] = _xlPar; 577 | _bfS3[i + 1] = _xrPar; 578 | } 579 | } 580 | 581 | private byte[] Crypt_ECB(byte[] text, bool decrypt) 582 | { 583 | var paddedLen = text.Length % 8 == 0 ? text.Length : text.Length + 8 - (text.Length % 8); 584 | if (paddedLen != text.Length) 585 | { 586 | Array.Resize(ref text, paddedLen); 587 | } 588 | 589 | var plainText = text.AsSpan(); 590 | for (var i = 0; i < plainText.Length; i += 8) 591 | { 592 | var block = plainText.Slice(i, 8); 593 | if (decrypt) 594 | { 595 | BlockDecrypt(block); 596 | } 597 | else 598 | { 599 | BlockEncrypt(block); 600 | } 601 | } 602 | 603 | return text; 604 | } 605 | 606 | private void Crypt_CBC(Span text, bool decrypt) 607 | { 608 | byte[] preblock = null; 609 | 610 | var iv = _initVector.AsSpan(); 611 | 612 | for (var i = 0; i < text.Length; i += 8) 613 | { 614 | var block = text.Slice(i, 8); 615 | if (decrypt) 616 | { 617 | preblock = block.ToArray(); 618 | BlockDecrypt(block); 619 | } 620 | 621 | XorBlock_private(block, iv); 622 | if (!decrypt) 623 | { 624 | BlockEncrypt(block); 625 | iv = block; 626 | } 627 | else 628 | { 629 | // clone preblock into iv. 630 | iv = preblock.AsSpan(); 631 | } 632 | } 633 | } 634 | 635 | private void BlockEncrypt(Span block) 636 | { 637 | SetBlock(block); 638 | Encipher(); 639 | GetBlock(block); 640 | } 641 | 642 | private void BlockDecrypt(Span block) 643 | { 644 | SetBlock(block); 645 | Decipher(); 646 | GetBlock(block); 647 | } 648 | 649 | private void SetBlock(Span block) 650 | { 651 | // split the block 652 | if (!NonStandard) 653 | { 654 | _xlPar = BinaryPrimitives.ReadUInt32BigEndian(block); 655 | _xrPar = BinaryPrimitives.ReadUInt32BigEndian(block.Slice(4)); 656 | } 657 | else 658 | { 659 | _xrPar = BinaryPrimitives.ReadUInt32LittleEndian(block); 660 | _xlPar = BinaryPrimitives.ReadUInt32LittleEndian(block.Slice(4)); 661 | } 662 | } 663 | 664 | private void GetBlock(Span block) 665 | { 666 | if (!NonStandard) 667 | { 668 | BinaryPrimitives.TryWriteUInt32BigEndian(block, _xlPar); 669 | BinaryPrimitives.TryWriteUInt32BigEndian(block.Slice(4), _xrPar); 670 | } 671 | else 672 | { 673 | BinaryPrimitives.TryWriteUInt32LittleEndian(block, _xrPar); 674 | BinaryPrimitives.TryWriteUInt32LittleEndian(block.Slice(4), _xlPar); 675 | } 676 | } 677 | 678 | private void Encipher() 679 | { 680 | _xlPar ^= _bfP[0]; 681 | _xrPar = Round(_xlPar) ^ _bfP[1] ^ _xrPar; 682 | _xlPar = Round(_xrPar) ^ _bfP[2] ^ _xlPar; 683 | _xrPar = Round(_xlPar) ^ _bfP[3] ^ _xrPar; 684 | _xlPar = Round(_xrPar) ^ _bfP[4] ^ _xlPar; 685 | _xrPar = Round(_xlPar) ^ _bfP[5] ^ _xrPar; 686 | _xlPar = Round(_xrPar) ^ _bfP[6] ^ _xlPar; 687 | _xrPar = Round(_xlPar) ^ _bfP[7] ^ _xrPar; 688 | _xlPar = Round(_xrPar) ^ _bfP[8] ^ _xlPar; 689 | _xrPar = Round(_xlPar) ^ _bfP[9] ^ _xrPar; 690 | _xlPar = Round(_xrPar) ^ _bfP[10] ^ _xlPar; 691 | _xrPar = Round(_xlPar) ^ _bfP[11] ^ _xrPar; 692 | _xlPar = Round(_xrPar) ^ _bfP[12] ^ _xlPar; 693 | _xrPar = Round(_xlPar) ^ _bfP[13] ^ _xrPar; 694 | _xlPar = Round(_xrPar) ^ _bfP[14] ^ _xlPar; 695 | _xrPar = Round(_xlPar) ^ _bfP[15] ^ _xrPar; 696 | _xlPar = Round(_xrPar) ^ _bfP[16] ^ _xlPar; 697 | _xrPar ^= _bfP[17]; 698 | 699 | // swap the blocks 700 | var swap = _xlPar; 701 | _xlPar = _xrPar; 702 | _xrPar = swap; 703 | } 704 | 705 | private void Decipher() 706 | { 707 | _xlPar ^= _bfP[17]; 708 | for (uint i = 16; i > 0; i -= 2) 709 | { 710 | _xrPar = Round(_xrPar, _xlPar, i); 711 | _xlPar = Round(_xlPar, _xrPar, i - 1); 712 | } 713 | 714 | _xrPar ^= _bfP[0]; 715 | 716 | // swap the blocks 717 | var swap = _xlPar; 718 | _xlPar = _xrPar; 719 | _xrPar = swap; 720 | } 721 | 722 | private uint Round(uint a, uint b, uint n) => (((_bfS0[(b >> 24) & 0xff] + _bfS1[(b >> 16) & 0xff]) ^ _bfS2[(b >> 8) & 0xff]) + _bfS3[b & 0xff]) ^ _bfP[n] ^ a; 723 | 724 | private uint Round(uint b) => ((_bfS0[(b >> 24) & 0xff] + _bfS1[(b >> 16) & 0xff]) ^ _bfS2[(b >> 8) & 0xff]) + _bfS3[b & 0xff]; 725 | 726 | private void Dispose(bool disposing) 727 | { 728 | if (!IsDisposed) 729 | { 730 | if (disposing) 731 | { 732 | _randomSource.Dispose(); 733 | _randomSource = null; 734 | } 735 | 736 | IsDisposed = true; 737 | } 738 | } 739 | } --------------------------------------------------------------------------------