Java encryption!

// Default key vector

Private static byte [] Keys = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };

///

/// DES encrypted string

///

/// String to be encrypted

/// Encryption key, which must be 8 bits

/// The encrypted string is returned successfully. If the encrypted string fails, the source string is returned.

Public static string EncryptDES (string encryptString, string encryptKey)

{

Try

{

Byte [] rgbKey = Encoding. UTF8.GetBytes (encryptKey. Substring (0, 8 ));

Byte [] rgbIV = Keys;

Byte [] inputByteArray = Encoding. UTF8.GetBytes (encryptString );

DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider ();

MemoryStream mStream = new MemoryStream ();

CryptoStream cStream = new CryptoStream (mStream, dCSP. CreateEncryptor (rgbKey, rgbIV), CryptoStreamMode. Write );

CStream. Write (inputByteArray, 0, inputByteArray. Length );

CStream. FlushFinalBlock ();

Return Convert. ToBase64String (mStream. ToArray ());

}

Catch

{

Return encryptString;

}

}

///

/// DES decryption string

///

/// String to be decrypted

/// Decrypt the key, which must be 8 bits and the same as the encryption key

/// After successful decryption, the decrypted string is returned, and the source string fails to be returned.

Public static string DecryptDES (string decryptString, string decryptKey)

{

Try

{

Byte [] rgbKey = Encoding. UTF8.GetBytes (decryptKey );

Byte [] rgbIV = Keys;

Byte [] inputByteArray = Convert. FromBase64String (decryptString );

DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider ();

MemoryStream mStream = new MemoryStream ();

CryptoStream cStream = new CryptoStream (mStream, DCSP. CreateDecryptor (rgbKey, rgbIV), CryptoStreamMode. Write );

CStream. Write (inputByteArray, 0, inputByteArray. Length );

CStream. FlushFinalBlock ();

Return Encoding. UTF8.GetString (mStream. ToArray ());

}

Catch

{

Return decryptString;

}

}