Enterprise Library Test Guide - Willy .Net

210
Enterprise Library Test Guide
ID Scenario Test code
23 Encrypt and decrypt
plaintext with
RijndaelManaged
protected void btnEncryptAndDecrypt_Click(object sender,
EventArgs e)
{
provider.
byte[] key1;
byte[] byteArrayEncryptedText;
byte[] byteArrayDecryptedText;
byte[] byteArrayPlainText;
UnicodeEncoding textConverter = new UnicodeEncoding();
ICryptoTransform encryptor, decryptor;
RijndaelManaged myRijndealManaged = new RijndaelManaged();
key1 =
Convert.FromBase64String
("zKqffFs392WuxGMhFkfhYj/HtDDIjSiXnYqMlMMzrNc=");
myRijndealManaged.GenerateIV();
// Convert the data to a byte array.
byteArrayPlainText =
textConverter.GetBytes(txtBoxPlainText.Text);
encryptor = myRijndealManaged.
CreateEncryptor(key1,
myRijndealManaged.IV);
byteArrayEncryptedText =
encryptor.TransformFinalBlock(byteArrayPlainTe
xt, 0,
byteArrayPlainText.Length);
// Get a decryptor that uses the same key
// and IV as the encryptor.
decryptor = myRijndealManaged.
CreateDecryptor(key1,
myRijndealManaged.IV);
// Now decrypt the previously encrypted
// message using the decryptor
// obtained in the above step.
byteArrayDecryptedText = new
byte[byteArrayEncryptedText.Length];
byteArrayDecryptedText =
decryptor.TransformFinalBlock(byteArrayEncrypte
dText, 0,
byteArrayEncryptedText.Length);
}
// Convert the byte array back into a string.
txtBoxPlainText.Text =
textConverter.GetString(byteArrayDecryptedText);