C # A encapsulated encryption and decryption class

Encapsulation | encryption | decryption using System;
Using System.Text;
Using System.Globalization;
Using System.Security.Cryptography;
Using System.Windows.Forms;

Namespace Jh.encrypts
{
public class Jhencrypt
{
<summary>
Construction method
</summary>
Public Jhencrypt ()
{
}
<summary>
Encrypt with default key string
</summary>
<param name= "original" > Clear text </param>
<returns> redaction </returns>
public static string Encrypt (string original)
{
Return Encrypt (Original, "Jasonheung");
}
<summary>
Decrypting with the default key
</summary>
<param name= "original" > Redaction </param>
<returns> Clear Text </returns>
public static string Decrypt (string original)
{
Return Decrypt (Original, "Jasonheung", System.Text.Encoding.Default);
}
<summary>
Decrypts with a given key
</summary>
<param name= "original" > Redaction </param>
<param name= "key" > Key </param>
<returns> Clear Text </returns>
public static string Decrypt (string original, String key)
{
Return Decrypt (Original,key,system.text.encoding.default);
}
<summary>
Decrypts using the default key, returning the specified encoding plaintext
</summary>
<param name= "original" > Redaction </param>
<param name= "encoding" > Coding mode </param>
<returns> Clear Text </returns>
public static string Decrypt (String original,encoding Encoding)
{
Return Decrypt (Original, "Jasonheung", encoding);
}
<summary>
Encrypt with a given key
</summary>
<param name= "original" > Original text </param>
<param name= "key" > Key </param>
<param name= "Encoding" > character encoding scheme </param>
<returns> redaction </returns>
public static string Encrypt (string original, String key)
{
byte[] Buff = System.Text.Encoding.Default.GetBytes (original);
Byte[] KB = System.Text.Encoding.Default.GetBytes (key);
Return convert.tobase64string (Encrypt (BUFF,KB));
}

<summary>
Decrypts with a given key
</summary>
<param name= "Encrypted" > Redaction </param>
<param name= "key" > Key </param>
<param name= "Encoding" > character encoding scheme </param>
<returns> Clear Text </returns>
public static string Decrypt (String encrypted, string key,encoding Encoding)
{
byte[] Buff = convert.frombase64string (encrypted);
Byte[] KB = System.Text.Encoding.Default.GetBytes (key);
return encoding. GetString (Decrypt (BUFF,KB));
}
<summary>
Generate MD5 Summary
</summary>
<param name= "original" > Data source </param>
<returns> Summary </returns>
public static byte[] MakeMD5 (byte[] original)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider ();
byte[] Keyhash = Hashmd5.computehash (original);
HASHMD5 = null;
return keyhash;
}

<summary>
Encrypt with a given key
</summary>
<param name= "original" > Clear text </param>
<param name= "key" > Key </param>
<returns> redaction </returns>
public static byte[] Encrypt (byte[] original, byte[] key)
{
TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider ();
Des. Key = MakeMD5 (key);
Des. Mode = CIPHERMODE.ECB;

Return DES. CreateEncryptor (). TransformFinalBlock (original, 0, original. Length);
}

<summary>
Decrypting data with a given key
</summary>
<param name= "Encrypted" > Redaction </param>
<param name= "key" > Key </param>
<returns> Clear Text </returns>
public static byte[] Decrypt (byte[] encrypted, byte[] key)
{
TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider ();
Des. Key = MakeMD5 (key);
Des. Mode = CIPHERMODE.ECB;

Return DES. CreateDecryptor (). TransformFinalBlock (encrypted, 0, encrypted. Length);
}

<summary>
Encrypt with a given key
</summary>
<param name= "original" > Raw data </param>
<param name= "key" > Key </param>
<returns> redaction </returns>
public static byte[] Encrypt (byte[] original)
{
byte[] key = System.Text.Encoding.Default.GetBytes ("Jasonheung");
Return Encrypt (Original,key);
}

<summary>
Decrypting data with the default key
</summary>
<param name= "Encrypted" > Redaction </param>
<param name= "key" > Key </param>
<returns> Clear Text </returns>
public static byte[] Decrypt (byte[] encrypted)
{
byte[] key = System.Text.Encoding.Default.GetBytes ("Jasonheung");
Return Decrypt (Encrypted,key);
}

}
}