如何将一个加密连接字符串存储在注册表中

HKEY_LOCAL_MACHINE/Software/TestApplication

using Encryption;
using System.Text;
using Microsoft.Win32;

"Server=local; database=pubs; uid=Bob; pwd=Password"

"0123456789012345"

"Encryption Test Harness"

try
{
// Create the encryptor object, specifying 3DES as the
// encryption algorithm
Encryptor enc = new Encryptor(EncryptionAlgorithm.TripleDes);
// Get the connection string as a byte array
byte[] plainText = Encoding.ASCII.GetBytes(txtConnectionString.Text);
byte[] key = Encoding.ASCII.GetBytes(txtKey.Text);

// Perform the encryption
byte[] cipherText = enc.Encrypt(plainText, key);
// Store the intialization vector, as this will be required
// for decryption
txtInitializationVector.Text = Encoding.ASCII.GetString(enc.IV);

// Display the encrypted string
txtEncryptedString.Text = Convert.ToBase64String(cipherText);
}
catch(Exception ex)
{
MessageBox.Show("Exception encrypting: " + ex.Message,
"Encryption Test  Harness");
}

try
{
// Set up the Decryptor object
Decryptor dec = new Decryptor(EncryptionAlgorithm.TripleDes);

// Set the Initialization Vector
dec.IV = Encoding.ASCII.GetBytes(txtInitializationVector.Text);

byte[] key = Encoding.ASCII.GetBytes(txtKey.Text);
// Perform the decryption
byte[] plainText =  dec.Decrypt(Convert.FromBase64String(
txtEncryptedString.Text),
key);

// Display the decrypted string.
txtDecryptedString.Text = Encoding.ASCII.GetString(plainText);
}
catch(Exception ex)
{
MessageBox.Show("Exception decrypting. " + ex.Message,
"Encryption Test Harness");
}

// Create registry key and named values
RegistryKey rk = Registry.LocalMachine.OpenSubKey("Software",true);
rk = rk.CreateSubKey("TestApplication");

// Write encrypted string, initialization vector and key to the registry
rk.SetValue("connectionString",txtEncryptedString.Text);
rk.SetValue("initVector",Convert.ToBase64String(
Encoding.ASCII.GetBytes(txtInitializationVector.Text)));
rk.SetValue("key",Convert.ToBase64String(Encoding.ASCII.GetBytes(
txtKey.Text)));
MessageBox.Show("The data has been successfully written to the registry");

HKLM/Software/TestApplication

using Encryption;
using System.Text;
using Microsoft.Win32;

RegistryKey rk = Registry.LocalMachine.OpenSubKey(
@"Software/TestApplication",false);
lblEncryptedString.Text = (string)rk.GetValue("connectionString");

string initVector = (string)rk.GetValue("initVector");
string strKey = (string)rk.GetValue("key");

Decryptor dec = new Decryptor(EncryptionAlgorithm.TripleDes );
dec.IV = Convert.FromBase64String(initVector);

// Decrypt the string
byte[] plainText = dec.Decrypt(Convert.FromBase64String(
lblEncryptedString.Text),
Convert.FromBase64String(strKey));

lblDecryptedString.Text = Encoding.ASCII.GetString(plainText);