public async Task <ActionResult> DeleteConfirmed(int id)
{
EncryptedItem encryptedItem = await db.EncryptedItems.FindAsync(id);
db.EncryptedItems.Remove(encryptedItem);
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
public async Task <ActionResult> Edit([Bind(Include = "ID,Name,PublicKey,StorageLocation")] EncryptedItem encryptedItem)
{
if (ModelState.IsValid)
{
db.Entry(encryptedItem).State = EntityState.Modified;
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
return(View(encryptedItem));
}
public void TestHelperUnicode()
{
string testString = "普選正式選票2008年11月4日，星期二伊利諾州芝加哥市";
EncryptedItem item = EncryptionHelper.Encrypt(
Encoding.Unicode.GetBytes(testString));
string result =
Encoding.Unicode.GetString(EncryptionHelper.Decrypt(item));
Assert.AreNotEqual(
testString, Encoding.Unicode.GetString(item.Data));
Assert.AreEqual(testString, result);
}
public async Task <ActionResult> Create([Bind(Include = "Name,PublicKey,StorageLocation")] EncryptedItem encryptedItem)
{
if (ModelState.IsValid)
{
db.EncryptedItems.Add(encryptedItem);
await db.SaveChangesAsync();
return(RedirectToAction("Index"));
}
return(View(encryptedItem));
}
public void WrongDataDecrypt()
{
string result = string.Empty;
string testString = "普選正式選票2008年11月4日，星期二伊利諾州芝加哥市";
EncryptedItem item = EncryptionHelper.Encrypt(
Encoding.Unicode.GetBytes(testString));
byte[] data = new byte[item.Data.Length - 1];
Array.Copy(
(Array)(item.Data), 1, (Array)data, 0, item.Data.Length - 1);
item.Data = data;
Encoding.Unicode.GetString(EncryptionHelper.Decrypt(item));
}
// GET: EncryptedItems/Delete/5
public async Task <ActionResult> Delete(int?id)
{
if (id == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
EncryptedItem encryptedItem = await db.EncryptedItems.FindAsync(id);
if (encryptedItem == null)
{
return(HttpNotFound());
}
return(View(encryptedItem));
}
/// <summary>
/// Encrypts the specified string to Encrypt.
/// </summary>
/// <param name="bytesToEncrypt">The string to Encrypt.</param>
/// <param name="shortKey">if set to <c>true</c> [short key].</param>
/// <returns>
/// A <see cref="EncryptedItem"/> containing details about
/// the Encrypted string.
/// </returns>
/// <externalUnit cref="EncryptedItem"/>
/// <externalUnit cref="SequoiaCryptoProvider"/>
/// <revision revisor="dev01" date="1/28/2009" version="1.0.5.9">
/// Member Created
/// </revision>
public static EncryptedItem Encrypt(
byte[] bytesToEncrypt,
bool shortKey)
{
// create parm for return
var encryptedItem = new EncryptedItem();
using (var crypto = new SequoiaCryptoProvider(shortKey))
{
encryptedItem.Data = crypto.Encrypt(
bytesToEncrypt);
}
return(encryptedItem);
}
/// <summary>
/// DeEncryptes the specified Encrypted item.
/// </summary>
/// <param name="encryptedItem">The Encrypted item.</param>
/// <param name="shortKey">if set to <c>true</c> [short key].</param>
/// <returns>
/// The unencrypted value of the Encrypted data.
/// </returns>
/// <externalUnit cref="EncryptedItem"/>
/// <externalUnit cref="SequoiaCryptoProvider"/>
/// <revision revisor="dev01" date="1/28/2009" version="1.0.5.9">
/// Member Created
/// </revision>
public static byte[] Decrypt(
EncryptedItem encryptedItem,
bool shortKey)
{
// Review: should this be in Try/catch block?
// Create return param
byte[] results = null;
using (var crypto = new SequoiaCryptoProvider(shortKey))
{
results = crypto.Decrypt(encryptedItem.Data);
}
return(results);
}
public void WrongDataHashTest()
{
byte[] encryptedData = null;
string testString = "普選正式選票2008年11月4日，星期二伊利諾州芝加哥市";
string testPath = Path.Combine(
AppDomain.CurrentDomain.BaseDirectory,
@"..\..\TestData\Encryption");
string publicKey =
File.ReadAllText(Path.Combine(testPath, "PublicKey.xml"));
var plainData =
Encoding.Unicode.GetBytes(testString);
var crypto = new SequoiaCryptoProvider();
var hasher = new SHA512Managed();
var hash = hasher.ComputeHash(plainData);
// Change one byte of the hash
plainData[0] = (byte)0;
//Calculate the hash and append it to the data
byte[] dataPlusHash =
SequoiaCryptoProvider.AppendArrays(
hash,
plainData);
// Symmetrically Encrypt data and hash with random key and IV
byte[] encryptedDataPlusHash =
crypto.SymmetricallyEncryptContent(dataPlusHash);
// Create an Encrypted transport Key
var transKey = new TransportKey(crypto);
// Add transport Key to ecnrypted data
encryptedData =
SequoiaCryptoProvider.AppendArrays(
transKey.GenerateTransportKey(publicKey),
encryptedDataPlusHash);
EncryptedItem item = new EncryptedItem();
item.Data = encryptedData;
var result = EncryptionHelper.Decrypt(item, false);
}
/// <summary>
/// DeEncryptes the specified Encrypted item.
/// </summary>
/// <param name="encryptedItem">The Encrypted item.</param>
/// <returns>The unEncrypted value of the Encrypted data.</returns>
/// <externalUnit cref="EncryptedItem"/>
/// <externalUnit cref="SequoiaCryptoProvider"/>
/// <revision revisor="dev01" date="1/28/2009" version="1.0.5.9">
/// Member Created
/// </revision>
public static byte[] Decrypt(EncryptedItem encryptedItem)
{
return(EncryptionHelper.Decrypt(encryptedItem, true));
}
public void TestHelperEncrypteDecryptSerialize()
{
#region longstring for testing
string testString =
@"
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ABCDEFGHIJKLMNOPQRSTUVWXYZ
";
#endregion
int size = 0;
EncryptedItem item = EncryptionHelper.Encrypt(
Encoding.Unicode.GetBytes(testString));
size = item.EncryptedSize;
string testPath = Path.Combine(
AppDomain.CurrentDomain.BaseDirectory,
@"..\..\TestData\Encryption\TestingSerialize.enc");
File.WriteAllBytes(
testPath, Encoding.Unicode.GetBytes(item.ToString()));
byte[] encryptedFile = File.ReadAllBytes(testPath);
EncryptedItem tmpItem =
EncryptedItem.FromXml(
Encoding.Unicode.GetString(encryptedFile));
Assert.AreEqual(size, tmpItem.EncryptedSize);
string result =
Encoding.Unicode.GetString(EncryptionHelper.Decrypt(item));
Assert.AreNotEqual(
testString, Encoding.Unicode.GetString(item.Data));
Assert.AreEqual(testString, result);
File.Delete(testPath);
}
