using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Security.Cryptography;
using System.IO;
using Aced.Cryptography;
namespace CastEncryptor_Demo
{
/// <summary>
/// Summary description for Form1.
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Button checkUpButton;
private System.Windows.Forms.Label testStatusLabel;
private System.Windows.Forms.Button generateKeyButton;
private System.Windows.Forms.Label keyLabel;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.GroupBox groupBox2;
private System.Windows.Forms.Button encSourceButton;
private System.Windows.Forms.Button encDestButton;
private System.Windows.Forms.Button encProceedButton;
private System.Windows.Forms.Button decSourceButton;
private System.Windows.Forms.Button decDestButton;
private System.Windows.Forms.Button decProceedButton;
private System.Windows.Forms.Label encStatusLabel;
private System.Windows.Forms.Label decStatusLabel;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label encSourceLabel;
private System.Windows.Forms.Label encDestLabel;
private System.Windows.Forms.Label decDestLabel;
private System.Windows.Forms.Label decSourceLabel;
private System.Windows.Forms.Label label6;
private System.Windows.Forms.Label label7;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.Label label10;
private System.Windows.Forms.Label label11;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
private System.Windows.Forms.SaveFileDialog saveFileDialog1;
private System.Windows.Forms.ComboBox encMethodCombo;
private System.Windows.Forms.ComboBox decMethodCombo;
private System.Windows.Forms.Label encHashLabel;
private System.Windows.Forms.Label decHashLabel;
private System.Windows.Forms.Label label1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.checkUpButton = new System.Windows.Forms.Button();
this.testStatusLabel = new System.Windows.Forms.Label();
this.generateKeyButton = new System.Windows.Forms.Button();
this.keyLabel = new System.Windows.Forms.Label();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.encHashLabel = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.encMethodCombo = new System.Windows.Forms.ComboBox();
this.label4 = new System.Windows.Forms.Label();
this.encDestLabel = new System.Windows.Forms.Label();
this.encSourceLabel = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.encStatusLabel = new System.Windows.Forms.Label();
this.encProceedButton = new System.Windows.Forms.Button();
this.encDestButton = new System.Windows.Forms.Button();
this.encSourceButton = new System.Windows.Forms.Button();
this.groupBox2 = new System.Windows.Forms.GroupBox();
this.decHashLabel = new System.Windows.Forms.Label();
this.label10 = new System.Windows.Forms.Label();
this.decMethodCombo = new System.Windows.Forms.ComboBox();
this.label11 = new System.Windows.Forms.Label();
this.decDestLabel = new System.Windows.Forms.Label();
this.decSourceLabel = new System.Windows.Forms.Label();
this.label6 = new System.Windows.Forms.Label();
this.label7 = new System.Windows.Forms.Label();
this.decStatusLabel = new System.Windows.Forms.Label();
this.decProceedButton = new System.Windows.Forms.Button();
this.decDestButton = new System.Windows.Forms.Button();
this.decSourceButton = new System.Windows.Forms.Button();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
this.label1 = new System.Windows.Forms.Label();
this.groupBox1.SuspendLayout();
this.groupBox2.SuspendLayout();
this.SuspendLayout();
//
// checkUpButton
//
this.checkUpButton.Location = new System.Drawing.Point(24, 16);
this.checkUpButton.Name = "checkUpButton";
this.checkUpButton.Size = new System.Drawing.Size(372, 23);
this.checkUpButton.TabIndex = 0;
this.checkUpButton.Text = "Check Up The CAST-128 Algorithm With Test Vectors From RFC 2144";
this.checkUpButton.Click += new System.EventHandler(this.checkUpButton_Click);
//
// testStatusLabel
//
this.testStatusLabel.Location = new System.Drawing.Point(416, 20);
this.testStatusLabel.Name = "testStatusLabel";
this.testStatusLabel.Size = new System.Drawing.Size(104, 16);
this.testStatusLabel.TabIndex = 1;
this.testStatusLabel.Text = "<status>";
this.testStatusLabel.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// generateKeyButton
//
this.generateKeyButton.Location = new System.Drawing.Point(24, 56);
this.generateKeyButton.Name = "generateKeyButton";
this.generateKeyButton.Size = new System.Drawing.Size(188, 23);
this.generateKeyButton.TabIndex = 2;
this.generateKeyButton.Text = "Use New GUID As Encryption Key";
this.generateKeyButton.Click += new System.EventHandler(this.generateKeyButton_Click);
//
// keyLabel
//
this.keyLabel.Location = new System.Drawing.Point(300, 60);
this.keyLabel.Name = "keyLabel";
this.keyLabel.Size = new System.Drawing.Size(220, 16);
this.keyLabel.TabIndex = 4;
this.keyLabel.Text = "00000000-0000-0000-0000-000000000000";
this.keyLabel.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// groupBox1
//
this.groupBox1.Controls.Add(this.encHashLabel);
this.groupBox1.Controls.Add(this.label5);
this.groupBox1.Controls.Add(this.encMethodCombo);
this.groupBox1.Controls.Add(this.label4);
this.groupBox1.Controls.Add(this.encDestLabel);
this.groupBox1.Controls.Add(this.encSourceLabel);
this.groupBox1.Controls.Add(this.label3);
this.groupBox1.Controls.Add(this.label2);
this.groupBox1.Controls.Add(this.encStatusLabel);
this.groupBox1.Controls.Add(this.encProceedButton);
this.groupBox1.Controls.Add(this.encDestButton);
this.groupBox1.Controls.Add(this.encSourceButton);
this.groupBox1.Location = new System.Drawing.Point(24, 92);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(496, 128);
this.groupBox1.TabIndex = 5;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "File Encryption";
//
// encHashLabel
//
this.encHashLabel.Location = new System.Drawing.Point(272, 100);
this.encHashLabel.Name = "encHashLabel";
this.encHashLabel.Size = new System.Drawing.Size(216, 16);
this.encHashLabel.TabIndex = 11;
this.encHashLabel.Text = "<hash value>";
this.encHashLabel.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// label5
//
this.label5.Location = new System.Drawing.Point(212, 100);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(60, 16);
this.label5.TabIndex = 10;
this.label5.Text = "MD5 Hash:";
//
// encMethodCombo
//
this.encMethodCombo.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.encMethodCombo.Items.AddRange(new object[] {
"CAST-128",
"AES-128 (Rijndael)",
"AES-256 (Rijndael)",
"TripleDES"});
this.encMethodCombo.Location = new System.Drawing.Point(68, 96);
this.encMethodCombo.Name = "encMethodCombo";
this.encMethodCombo.Size = new System.Drawing.Size(128, 21);
this.encMethodCombo.TabIndex = 9;
//
// label4
//
this.label4.Location = new System.Drawing.Point(12, 100);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(56, 16);
this.label4.TabIndex = 8;
this.label4.Text = "Method:";
//
// encDestLabel
//
this.encDestLabel.Location = new System.Drawing.Point(104, 40);
this.encDestLabel.Name = "encDestLabel";
this.encDestLabel.Size = new System.Drawing.Size(388, 16);
this.encDestLabel.TabIndex = 7;
this.encDestLabel.Text = "<file name>";
//
// encSourceLabel
//
this.encSourceLabel.Location = new System.Drawing.Point(104, 20);
this.encSourceLabel.Name = "encSourceLabel";
this.encSourceLabel.Size = new System.Drawing.Size(388, 16);
this.encSourceLabel.TabIndex = 6;
this.encSourceLabel.Text = "<file name>";
//
// label3
//
this.label3.Location = new System.Drawing.Point(12, 40);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(92, 16);
this.label3.TabIndex = 5;
this.label3.Text = "Destination File:";
//
// label2
//
this.label2.Location = new System.Drawing.Point(12, 20);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(92, 16);
this.label2.TabIndex = 4;
this.label2.Text = "Source File:";
//
// encStatusLabel
//
this.encStatusLabel.Location = new System.Drawing.Point(396, 68);
this.encStatusLabel.Name = "encStatusLabel";
this.encStatusLabel.Size = new System.Drawing.Size(92, 16);
this.encStatusLabel.TabIndex = 3;
this.encStatusLabel.Text = "<status>";
this.encStatusLabel.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// encProceedButton
//
this.encProceedButton.Location = new System.Drawing.Point(276, 64);
this.encProceedButton.Name = "encProceedButton";
this.encProceedButton.Size = new System.Drawing.Size(116, 23);
this.encProceedButton.TabIndex = 2;
this.encProceedButton.Text = "Perform Encryption";
this.encProceedButton.Click += new System.EventHandler(this.encProceedButton_Click);
//
// encDestButton
//
this.encDestButton.Location = new System.Drawing.Point(132, 64);
this.encDestButton.Name = "encDestButton";
this.encDestButton.Size = new System.Drawing.Size(140, 23);
this.encDestButton.TabIndex = 1;
this.encDestButton.Text = "Assign Destination File...";
this.encDestButton.Click += new System.EventHandler(this.encDestButton_Click);
//
// encSourceButton
//
this.encSourceButton.Location = new System.Drawing.Point(8, 64);
this.encSourceButton.Name = "encSourceButton";
this.encSourceButton.Size = new System.Drawing.Size(120, 23);
this.encSourceButton.TabIndex = 0;
this.encSourceButton.Text = "Assign Source File...";
this.encSourceButton.Click += new System.EventHandler(this.encSourceButton_Click);
//
// groupBox2
//
this.groupBox2.Controls.Add(this.decHashLabel);
this.groupBox2.Controls.Add(this.label10);
this.groupBox2.Controls.Add(this.decMethodCombo);
this.groupBox2.Controls.Add(this.label11);
this.groupBox2.Controls.Add(this.decDestLabel);
this.groupBox2.Controls.Add(this.decSourceLabel);
this.groupBox2.Controls.Add(this.label6);
this.groupBox2.Controls.Add(this.label7);
this.groupBox2.Controls.Add(this.decStatusLabel);
this.groupBox2.Controls.Add(this.decProceedButton);
this.groupBox2.Controls.Add(this.decDestButton);
this.groupBox2.Controls.Add(this.decSourceButton);
this.groupBox2.Location = new System.Drawing.Point(24, 236);
this.groupBox2.Name = "groupBox2";
this.groupBox2.Size = new System.Drawing.Size(496, 128);
this.groupBox2.TabIndex = 6;
this.groupBox2.TabStop = false;
this.groupBox2.Text = "File Decryption";
//
// decHashLabel
//
this.decHashLabel.Location = new System.Drawing.Point(272, 100);
this.decHashLabel.Name = "decHashLabel";
this.decHashLabel.Size = new System.Drawing.Size(216, 16);
this.decHashLabel.TabIndex = 15;
this.decHashLabel.Text = "<hash value>";
this.decHashLabel.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// label10
//
this.label10.Location = new System.Drawing.Point(212, 100);
this.label10.Name = "label10";
this.label10.Size = new System.Drawing.Size(60, 16);
this.label10.TabIndex = 14;
this.label10.Text = "MD5 Hash:";
//
// decMethodCombo
//
this.decMethodCombo.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
this.decMethodCombo.Items.AddRange(new object[] {
"CAST-128",
"AES-128 (Rijndael)",
"AES-256 (Rijndael)",
"TripleDES"});
this.decMethodCombo.Location = new System.Drawing.Point(68, 96);
this.decMethodCombo.Name = "decMethodCombo";
this.decMethodCombo.Size = new System.Drawing.Size(128, 21);
this.decMethodCombo.TabIndex = 13;
//
// label11
//
this.label11.Location = new System.Drawing.Point(12, 100);
this.label11.Name = "label11";
this.label11.Size = new System.Drawing.Size(56, 16);
this.label11.TabIndex = 12;
this.label11.Text = "Method:";
//
// decDestLabel
//
this.decDestLabel.Location = new System.Drawing.Point(104, 40);
this.decDestLabel.Name = "decDestLabel";
this.decDestLabel.Size = new System.Drawing.Size(388, 16);
this.decDestLabel.TabIndex = 11;
this.decDestLabel.Text = "<file name>";
//
// decSourceLabel
//
this.decSourceLabel.Location = new System.Drawing.Point(104, 20);
this.decSourceLabel.Name = "decSourceLabel";
this.decSourceLabel.Size = new System.Drawing.Size(388, 16);
this.decSourceLabel.TabIndex = 10;
this.decSourceLabel.Text = "<file name>";
//
// label6
//
this.label6.Location = new System.Drawing.Point(12, 40);
this.label6.Name = "label6";
this.label6.Size = new System.Drawing.Size(92, 16);
this.label6.TabIndex = 9;
this.label6.Text = "Destination File:";
//
// label7
//
this.label7.Location = new System.Drawing.Point(12, 20);
this.label7.Name = "label7";
this.label7.Size = new System.Drawing.Size(92, 16);
this.label7.TabIndex = 8;
this.label7.Text = "Source File:";
//
// decStatusLabel
//
this.decStatusLabel.Location = new System.Drawing.Point(396, 68);
this.decStatusLabel.Name = "decStatusLabel";
this.decStatusLabel.Size = new System.Drawing.Size(92, 16);
this.decStatusLabel.TabIndex = 3;
this.decStatusLabel.Text = "<status>";
this.decStatusLabel.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// decProceedButton
//
this.decProceedButton.Location = new System.Drawing.Point(276, 64);
this.decProceedButton.Name = "decProceedButton";
this.decProceedButton.Size = new System.Drawing.Size(116, 23);
this.decProceedButton.TabIndex = 2;
this.decProceedButton.Text = "Perform Decryption";
this.decProceedButton.Click += new System.EventHandler(this.decProceedButton_Click);
//
// decDestButton
//
this.decDestButton.Location = new System.Drawing.Point(132, 64);
this.decDestButton.Name = "decDestButton";
this.decDestButton.Size = new System.Drawing.Size(140, 23);
this.decDestButton.TabIndex = 1;
this.decDestButton.Text = "Assign Destination File...";
this.decDestButton.Click += new System.EventHandler(this.decDestButton_Click);
//
// decSourceButton
//
this.decSourceButton.Location = new System.Drawing.Point(8, 64);
this.decSourceButton.Name = "decSourceButton";
this.decSourceButton.Size = new System.Drawing.Size(120, 23);
this.decSourceButton.TabIndex = 0;
this.decSourceButton.Text = "Assign Source File...";
this.decSourceButton.Click += new System.EventHandler(this.decSourceButton_Click);
//
// openFileDialog1
//
this.openFileDialog1.Filter = "All Files|*.*";
this.openFileDialog1.Title = "Select The Source File";
//
// saveFileDialog1
//
this.saveFileDialog1.Filter = "All Files|*.*";
this.saveFileDialog1.Title = "Select The Destination File";
//
// label1
//
this.label1.Location = new System.Drawing.Point(224, 60);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(76, 16);
this.label1.TabIndex = 7;
this.label1.Text = "Encrypt. Key:";
this.label1.TextAlign = System.Drawing.ContentAlignment.TopRight;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(542, 379);
this.Controls.Add(this.label1);
this.Controls.Add(this.groupBox2);
this.Controls.Add(this.groupBox1);
this.Controls.Add(this.keyLabel);
this.Controls.Add(this.generateKeyButton);
this.Controls.Add(this.testStatusLabel);
this.Controls.Add(this.checkUpButton);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(204)));
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "CastEncryptor Test Application";
this.Load += new System.EventHandler(this.Form1_Load);
this.groupBox1.ResumeLayout(false);
this.groupBox2.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
public static void ChangeEndian(byte[] bytes)
{
int index = 0;
while (index < bytes.Length)
{
byte b = bytes[index];
bytes[index] = bytes[index + 3];
bytes[index + 3] = b;
b = bytes[index + 1];
bytes[index + 1] = bytes[index + 2];
bytes[index + 2] = b;
index += 4;
}
}
private void AssertEquals(byte[] x, byte[] vector)
{
for (int i = 0; i < vector.Length; i++)
if (x[i] != vector[i])
throw new Exception("Test Failed !");
}
private void SimpleTest()
{
byte[] key = new byte[]
{
0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
};
byte[] plaintext = new byte[]
{
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF
};
ChangeEndian(key);
int[] scheduledKey = AcedCast5.ScheduleKey(key);
byte[] ct = (byte[])plaintext.Clone();
ChangeEndian(ct);
AcedCast5.EncryptECB(scheduledKey, ct, 0);
ChangeEndian(ct);
AssertEquals(ct, new byte[]
{
0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2
});
byte[] dt = (byte[])ct.Clone();
ChangeEndian(dt);
AcedCast5.DecryptECB(scheduledKey, dt, 0);
ChangeEndian(dt);
AssertEquals(dt, new byte[]
{
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF
});
testStatusLabel.Text = "< 1 test passed >";
MessageBox.Show("Single Plaintext-Key-Ciphertext Test passed successfully.",
"CAST-128 Algorithm Tests");
}
private void FullTest()
{
testStatusLabel.Text = "Please wait...";
Application.DoEvents();
byte[] a = new byte[]
{
0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
};
byte[] b = new byte[]
{
0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
};
int[] key = new int[32];
ChangeEndian(a);
ChangeEndian(b);
long L = DateTime.UtcNow.Ticks;
for (int i = 0; i < 1000000; i++)
{
AcedCast5.ScheduleKey(b, key);
AcedCast5.EncryptECB(key, a, 0);
AcedCast5.EncryptECB(key, a, 8);
AcedCast5.ScheduleKey(a, key);
AcedCast5.EncryptECB(key, b, 0);
AcedCast5.EncryptECB(key, b, 8);
}
L = (DateTime.UtcNow.Ticks - L) / 10000;
ChangeEndian(a);
ChangeEndian(b);
AssertEquals(a, new byte[]
{
0xEE, 0xA9, 0xD0, 0xA2, 0x49, 0xFD, 0x3B, 0xA6,
0xB3, 0x43, 0x6F, 0xB8, 0x9D, 0x6D, 0xCA, 0x92
});
AssertEquals(b, new byte[]
{
0xB2, 0xC9, 0x5E, 0xB0, 0x0C, 0x31, 0xAD, 0x71,
0x80, 0xAC, 0x05, 0xB8, 0xE8, 0x3D, 0x69, 0x6E
});
testStatusLabel.Text = "< 2 tests passed >";
MessageBox.Show("Full Maintenance Encryption Test passed in " + L.ToString() + " ms.",
"CAST-128 Algorithm Tests");
testStatusLabel.Text = "Please wait...";
Application.DoEvents();
ChangeEndian(a);
ChangeEndian(b);
L = DateTime.UtcNow.Ticks;
for (int i = 0; i < 1000000; i++)
{
AcedCast5.ScheduleKey(a, key);
AcedCast5.DecryptECB(key, b, 8);
AcedCast5.DecryptECB(key, b, 0);
AcedCast5.ScheduleKey(b, key);
AcedCast5.DecryptECB(key, a, 8);
AcedCast5.DecryptECB(key, a, 0);
}
L = (DateTime.UtcNow.Ticks - L) / 10000;
ChangeEndian(a);
ChangeEndian(b);
AssertEquals(a, new byte[]
{
0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78,
0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A
});
AssertEquals(b, a);
testStatusLabel.Text = "< 3 tests passed >";
MessageBox.Show("Full Maintenance Decryption Test passed in " + L.ToString() + " ms.",
"CAST-128 Algorithm Tests");
}
private void checkUpButton_Click(object sender, System.EventArgs e)
{
SimpleTest();
FullTest();
}
private Guid _key = Guid.Empty;
private string _encSourceFileName;
private string _encDestFileName;
private string _decSourceFileName;
private string _decDestFileName;
private void EncryptCAST()
{
encStatusLabel.Text = "Please wait...";
Application.DoEvents();
long L = DateTime.UtcNow.Ticks;
FileStream inFile = new FileStream(_encSourceFileName, FileMode.Open, FileAccess.Read);
FileStream outFile = new FileStream(_encDestFileName, FileMode.Create, FileAccess.Write);
byte[] buffer = new byte[0x40000];
long x = inFile.Length;
outFile.WriteByte(99); // a format check mark
outFile.WriteByte((byte)x);
outFile.WriteByte((byte)(x >> 8));
outFile.WriteByte((byte)(x >> 16));
outFile.WriteByte((byte)(x >> 24));
outFile.WriteByte((byte)(x >> 32));
int[] schKey = AcedCast5.ScheduleKey(_key.ToByteArray());
long iv = AcedCast5.GetOrdinaryIV(schKey);
while (x >= 0x40000)
{
inFile.Read(buffer, 0, 0x40000);
iv = AcedCast5.EncryptCBC(schKey, buffer, 0, 0x40000, iv);
outFile.Write(buffer, 0, 0x40000);
x -= 0x40000;
}
if (x > 0)
{
int len = (int)x;
inFile.Read(buffer, 0, len);
while ((len & 7) != 0)
{
buffer[len] = 0;
len++;
}
AcedCast5.EncryptCBC(schKey, buffer, 0, len, iv);
outFile.Write(buffer, 0, len);
}
outFile.Close();
inFile.Close();
L = (DateTime.UtcNow.Ticks - L) / 10000;
encStatusLabel.Text = "Done in " + L.ToString() + " ms.";
}
private void DecryptCAST()
{
decStatusLabel.Text = "Please wait...";
Application.DoEvents();
long L = DateTime.UtcNow.Ticks;
FileStream inFile = new FileStream(_decSourceFileName, FileMode.Open, FileAccess.Read);
if (inFile.ReadByte() != 99)
{
decStatusLabel.Text = "Wrong File !";
inFile.Close();
return;
}
long x = inFile.ReadByte();
x |= ((long)inFile.ReadByte()) << 8;
x |= ((long)inFile.ReadByte()) << 16;
x |= ((long)inFile.ReadByte()) << 24;
x |= ((long)inFile.ReadByte()) << 32;
FileStream outFile = new FileStream(_decDestFileName, FileMode.Create, FileAccess.Write);
byte[] buffer = new byte[0x40000];
int[] schKey = AcedCast5.ScheduleKey(_key.ToByteArray());
long iv = AcedCast5.GetOrdinaryIV(schKey);
while (x >= 0x40000)
{
inFile.Read(buffer, 0, 0x40000);
iv = AcedCast5.DecryptCBC(schKey, buffer, 0, 0x40000, iv);
outFile.Write(buffer, 0, 0x40000);
x -= 0x40000;
}
if (x > 0)
{
int len = ((int)x + 7) & 0x3FFF8;
inFile.Read(buffer, 0, len);
AcedCast5.DecryptCBC(schKey, buffer, 0, len, iv);
outFile.Write(buffer, 0, (int)x);
}
outFile.Close();
inFile.Close();
L = (DateTime.UtcNow.Ticks - L) / 10000;
decHashLabel.Text = GetFileHash(_decDestFileName);
decStatusLabel.Text = "Done in " + L.ToString() + " ms.";
}
private byte[] _lastKey;
private byte[] _lastIV;
private void EncryptAES(int keySize)
{
encStatusLabel.Text = "Please wait...";
Application.DoEvents();
RijndaelManaged myRijndael = new RijndaelManaged();
myRijndael.KeySize = keySize;
myRijndael.GenerateKey();
myRijndael.GenerateIV();
_lastKey = myRijndael.Key;
_lastIV = myRijndael.IV;
long L = DateTime.UtcNow.Ticks;
FileStream inFile = new FileStream(_encSourceFileName, FileMode.Open, FileAccess.Read);
FileStream outFile = new FileStream(_encDestFileName, FileMode.Create, FileAccess.Write);
long x = inFile.Length;
outFile.WriteByte(99); // a format check mark
outFile.WriteByte((byte)x);
outFile.WriteByte((byte)(x >> 8));
outFile.WriteByte((byte)(x >> 16));
outFile.WriteByte((byte)(x >> 24));
outFile.WriteByte((byte)(x >> 32));
ICryptoTransform encryptor = myRijndael.CreateEncryptor(_lastKey, _lastIV);
CryptoStream csEncrypt = new CryptoStream(outFile, encryptor, CryptoStreamMode.Write);
byte[] buffer = new byte[0x40000];
while (x >= 0x40000)
{
inFile.Read(buffer, 0, 0x40000);
csEncrypt.Write(buffer, 0, 0x40000);
x -= 0x40000;
}
if (x > 0)
{
inFile.Read(buffer, 0, (int)x);
csEncrypt.Write(buffer, 0, (int)x);
}
csEncrypt.FlushFinalBlock();
csEncrypt.Close();
outFile.Close();
inFile.Close();
L = (DateTime.UtcNow.Ticks - L) / 10000;
myRijndael.Clear();
encStatusLabel.Text = "Done in " + L.ToString() + " ms.";
}
private void DecryptAES(int keySize)
{
decStatusLabel.Text = "Please wait...";
Application.DoEvents();
RijndaelManaged myRijndael = new RijndaelManaged();
myRijndael.KeySize = keySize;
long L = DateTime.UtcNow.Ticks;
FileStream inFile = new FileStream(_decSourceFileName, FileMode.Open, FileAccess.Read);
if (inFile.ReadByte() != 99)
{
decStatusLabel.Text = "Wrong File !";
inFile.Close();
return;
}
long x = inFile.ReadByte();
x |= ((long)inFile.ReadByte()) << 8;
x |= ((long)inFile.ReadByte()) << 16;
x |= ((long)inFile.ReadByte()) << 24;
x |= ((long)inFile.ReadByte()) << 32;
ICryptoTransform decryptor = myRijndael.CreateDecryptor(_lastKey, _lastIV);
CryptoStream csDecrypt = new CryptoStream(inFile, decryptor, CryptoStreamMode.Read);
FileStream outFile = new FileStream(_decDestFileName, FileMode.Create, FileAccess.Write);
byte[] buffer = new byte[0x40000];
int[] schKey = AcedCast5.ScheduleKey(_key.ToByteArray());
long iv = AcedCast5.GetOrdinaryIV(schKey);
while (x >= 0x40000)
{
csDecrypt.Read(buffer, 0, 0x40000);
outFile.Write(buffer, 0, 0x40000);
x -= 0x40000;
}
if (x > 0)
{
csDecrypt.Read(buffer, 0, (int)x);
outFile.Write(buffer, 0, (int)x);
}
csDecrypt.Close();
outFile.Close();
inFile.Close();
L = (DateTime.UtcNow.Ticks - L) / 10000;
myRijndael.Clear();
decHashLabel.Text = GetFileHash(_decDestFileName);
decStatusLabel.Text = "Done in " + L.ToString() + " ms.";
}
private void EncryptTripleDES()
{
encStatusLabel.Text = "Please wait...";
Application.DoEvents();
TripleDESCryptoServiceProvider myTripleDES = new TripleDESCryptoServiceProvider();
myTripleDES.GenerateKey();
myTripleDES.GenerateIV();
_lastKey = myTripleDES.Key;
_lastIV = myTripleDES.IV;
long L = DateTime.UtcNow.Ticks;
FileStream inFile = new FileStream(_encSourceFileName, FileMode.Open, FileAccess.Read);
FileStream outFile = new FileStream(_encDestFileName, FileMode.Create, FileAccess.Write);
long x = inFile.Length;
outFile.WriteByte(99); // a format check mark
outFile.WriteByte((byte)x);
outFile.WriteByte((byte)(x >> 8));
outFile.WriteByte((byte)(x >> 16));
outFile.WriteByte((byte)(x >> 24));
outFile.WriteByte((byte)(x >> 32));
ICryptoTransform encryptor = myTripleDES.CreateEncryptor(_lastKey, _lastIV);
CryptoStream csEncrypt = new CryptoStream(outFile, encryptor, CryptoStreamMode.Write);
byte[] buffer = new byte[0x40000];
while (x >= 0x40000)
{
inFile.Read(buffer, 0, 0x40000);
csEncrypt.Write(buffer, 0, 0x40000);
x -= 0x40000;
}
if (x > 0)
{
inFile.Read(buffer, 0, (int)x);
csEncrypt.Write(buffer, 0, (int)x);
}
csEncrypt.FlushFinalBlock();
csEncrypt.Close();
outFile.Close();
inFile.Close();
L = (DateTime.UtcNow.Ticks - L) / 10000;
myTripleDES.Clear();
encStatusLabel.Text = "Done in " + L.ToString() + " ms.";
}
private void DecryptTripleDES()
{
decStatusLabel.Text = "Please wait...";
Application.DoEvents();
TripleDESCryptoServiceProvider myTripleDES = new TripleDESCryptoServiceProvider();
long L = DateTime.UtcNow.Ticks;
FileStream inFile = new FileStream(_decSourceFileName, FileMode.Open, FileAccess.Read);
if (inFile.ReadByte() != 99)
{
decStatusLabel.Text = "Wrong File !";
inFile.Close();
return;
}
long x = inFile.ReadByte();
x |= ((long)inFile.ReadByte()) << 8;
x |= ((long)inFile.ReadByte()) << 16;
x |= ((long)inFile.ReadByte()) << 24;
x |= ((long)inFile.ReadByte()) << 32;
ICryptoTransform decryptor = myTripleDES.CreateDecryptor(_lastKey, _lastIV);
CryptoStream csDecrypt = new CryptoStream(inFile, decryptor, CryptoStreamMode.Read);
FileStream outFile = new FileStream(_decDestFileName, FileMode.Create, FileAccess.Write);
byte[] buffer = new byte[0x40000];
int[] schKey = AcedCast5.ScheduleKey(_key.ToByteArray());
long iv = AcedCast5.GetOrdinaryIV(schKey);
while (x >= 0x40000)
{
csDecrypt.Read(buffer, 0, 0x40000);
outFile.Write(buffer, 0, 0x40000);
x -= 0x40000;
}
if (x > 0)
{
csDecrypt.Read(buffer, 0, (int)x);
outFile.Write(buffer, 0, (int)x);
}
csDecrypt.Close();
outFile.Close();
inFile.Close();
L = (DateTime.UtcNow.Ticks - L) / 10000;
myTripleDES.Clear();
decHashLabel.Text = GetFileHash(_decDestFileName);
decStatusLabel.Text = "Done in " + L.ToString() + " ms.";
}
private string GetFileHash(string fileName)
{
FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
MD5 md5 = new MD5CryptoServiceProvider();
byte[] hash = md5.ComputeHash(fs);
fs.Close();
md5.Clear();
return (new Guid(hash)).ToString();
}
private void generateKeyButton_Click(object sender, System.EventArgs e)
{
_key = Guid.NewGuid();
keyLabel.Text = _key.ToString();
}
private void encSourceButton_Click(object sender, System.EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
_encSourceFileName = openFileDialog1.FileName;
encSourceLabel.Text = _encSourceFileName;
encHashLabel.Text = GetFileHash(_encSourceFileName);
}
}
private void encDestButton_Click(object sender, System.EventArgs e)
{
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
_encDestFileName = saveFileDialog1.FileName;
encDestLabel.Text = _encDestFileName;
}
}
private void decSourceButton_Click(object sender, System.EventArgs e)
{
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
_decSourceFileName = openFileDialog1.FileName;
decSourceLabel.Text = _decSourceFileName;
}
}
private void decDestButton_Click(object sender, System.EventArgs e)
{
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
_decDestFileName = saveFileDialog1.FileName;
decDestLabel.Text = _decDestFileName;
}
}
private void encProceedButton_Click(object sender, System.EventArgs e)
{
if (_encSourceFileName != null && _encDestFileName != null)
switch (encMethodCombo.SelectedIndex)
{
case 0:
EncryptCAST();
break;
case 1:
EncryptAES(128);
break;
case 2:
EncryptAES(256);
break;
case 3:
EncryptTripleDES();
break;
}
}
private void decProceedButton_Click(object sender, System.EventArgs e)
{
if (_decSourceFileName != null && _decDestFileName != null)
switch (decMethodCombo.SelectedIndex)
{
case 0:
DecryptCAST();
break;
case 1:
DecryptAES(128);
break;
case 2:
DecryptAES(256);
break;
case 3:
DecryptTripleDES();
break;
}
}
private void Form1_Load(object sender, System.EventArgs e)
{
encMethodCombo.SelectedIndex = 0;
decMethodCombo.SelectedIndex = 0;
}
}
}
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