private void Form1_DragDrop(object s, DragEventArgs e)
{
string[] fileList = (string[])e.Data.GetData(DataFormats.FileDrop);
// 複数ファイルまたはフォルダのドロップは無視
if (fileList.Length != 1)
{
return;
}
bool encrypted = false;
// 暗号化されたファイルかどうかチェック
if (!Directory.Exists(fileList[0]))
{
using (FileStream outfs = new FileStream(fileList[0], FileMode.Open))
{
var locker = new AttacheCase.Unlocker();
encrypted = (locker.Open(outfs) != AttacheCase.Result.ERR_UNENCRYPTED_FILE);
}
}
if (encrypted)
{
Decrypt(fileList[0]);
}
else
{
Encrypt(fileList[0]);
}
}
private void Unencrypted_File_Test(String filename)
{
string key = "cosmos";
using (FileStream infs = new FileStream("../../../../test/" + filename, FileMode.Open))
{
AttacheCase.Unlocker unlocker = new AttacheCase.Unlocker();
Assert.AreEqual(unlocker.Open(infs, key), AttacheCase.Result.ERR_UNENCRYPTED_FILE);
}
}
private void Decryption_Test(String filename)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string key = "cosmos";
if (test_md5.Length == 0)
{
using (FileStream infs = new FileStream("../../../../test/cosmos.jpg", FileMode.Open))
{
byte[] buffer = new byte[infs.Length];
infs.Read(buffer, 0, buffer.Length);
md5.ComputeHash(buffer);
test_md5 = md5.Hash;
md5.Initialize();
}
}
using (FileStream infs = new FileStream("../../../../test/" + filename, FileMode.Open))
{
AttacheCase.Unlocker unlocker = new AttacheCase.Unlocker();
Assert.AreEqual(unlocker.Open(infs, key), AttacheCase.Result.OK);
Assert.AreEqual(unlocker.Entries.Length, 1);
AttacheCase.FileEntry entry = unlocker.Entries[0];
MemoryStream extracted = new MemoryStream();
Assert.AreEqual(unlocker.ExtractFileData(extracted, infs, (uint)entry.Size), AttacheCase.Result.OK);
byte[] buffer = new byte[entry.Size];
extracted.Position = 0;
extracted.Read(buffer, 0, buffer.Length);
md5.ComputeHash(buffer);
Assert.IsTrue(test_md5.SequenceEqual(md5.Hash));
}
}
private void Decrypt(string fileName)
{
// パスワードの入力を要求
PasswordInput form = new PasswordInput();
form.ShowDialog();
string key = form.GetPassword();
if (key.Length > 0)
{
using (FileStream infs = new FileStream(fileName, FileMode.Open))
{
var unlocker = new AttacheCase.Unlocker();
// 指定したキーで復号を試みる
AttacheCase.Result result = unlocker.Open(infs, key);
if (result == AttacheCase.Result.OK)
{
// *** ヘッダの復号に成功
foreach (AttacheCase.FileEntry entry in unlocker.Entries)
{
string dirPath = Path.GetDirectoryName(fileName);
string outName = dirPath + "\\" + entry.NameSJIS;
if (entry.Size < 0)
{
// *** ディレクトリ
// 無かったら作る
if (!Directory.Exists(outName))
{
Directory.CreateDirectory(outName);
}
// 作成日時、更新日時を設定
Directory.SetCreationTime(outName, entry.CreateDateTime);
Directory.SetLastWriteTime(outName, entry.ChangeDateTime);
}
else
{
// *** ファイル
using (FileStream outfs = new FileStream(outName, FileMode.Create))
{
unlocker.ExtractFileData(outfs, infs, entry.Size);
}
// 作成日時、更新日時を設定
File.SetCreationTime(outName, entry.CreateDateTime);
File.SetLastWriteTime(outName, entry.ChangeDateTime);
}
}
MessageBox.Show("Decryption completed");
}
else if (result == AttacheCase.Result.ERR_WRONG_KEY)
{
// *** パスワードが違う
MessageBox.Show("Wrong password");
}
else
{
// *** 読み込み失敗
MessageBox.Show("Failed");
}
}
}
}
private void Form1_DragDrop(object s, DragEventArgs e)
{
string[] fileList = (string[])e.Data.GetData(DataFormats.FileDrop);
// 複数ファイルまたはフォルダのドロップは無視
if (fileList.Length != 1)
{
return;
}
bool encrypted = false;
// 暗号化されたファイルかどうかチェック
if (!Directory.Exists(fileList[0]))
{
using (FileStream outfs = new FileStream(fileList[0], FileMode.Open))
{
var locker = new AttacheCase.Unlocker();
encrypted = (locker.Open(outfs) != AttacheCase.Result.ERR_UNENCRYPTED_FILE);
}
}
if (encrypted)
{
Decrypt(fileList[0]);
}
else
{
Encrypt(fileList[0]);
}
}
private void Decrypt(string fileName)
{
// パスワードの入力を要求
PasswordInput form = new PasswordInput();
form.ShowDialog();
string key = form.GetPassword();
if (key.Length > 0)
{
using (FileStream infs = new FileStream(fileName, FileMode.Open))
{
var unlocker = new AttacheCase.Unlocker();
// 指定したキーで復号を試みる
AttacheCase.Result result = unlocker.Open(infs, key);
if (result == AttacheCase.Result.OK)
{
// *** ヘッダの復号に成功
foreach (AttacheCase.FileEntry entry in unlocker.Entries)
{
string dirPath = Path.GetDirectoryName(fileName);
string outName = dirPath + "\\" + entry.NameSJIS;
if (entry.Size < 0)
{
// *** ディレクトリ
// 無かったら作る
if (!Directory.Exists(outName))
{
Directory.CreateDirectory(outName);
}
// 作成日時、更新日時を設定
Directory.SetCreationTime(outName, entry.CreateDateTime);
Directory.SetLastWriteTime(outName, entry.ChangeDateTime);
}
else
{
// *** ファイル
using (FileStream outfs = new FileStream(outName, FileMode.Create))
{
unlocker.ExtractFileData(outfs, infs, entry.Size);
}
// 作成日時、更新日時を設定
File.SetCreationTime(outName, entry.CreateDateTime);
File.SetLastWriteTime(outName, entry.ChangeDateTime);
}
}
MessageBox.Show("Decryption completed");
}
else if (result == AttacheCase.Result.ERR_WRONG_KEY)
{
// *** パスワードが違う
MessageBox.Show("Wrong password");
}
else
{
// *** 読み込み失敗
MessageBox.Show("Failed");
}
}
}
}
public void SelfEncryptionAndDecryption()
{
string key = "This is a pen.";
String atc_filename = "test_.atc";
String test_data_str = "The quick brown fox jumps over the lazy dog";
String test_data2_str = "Quo usque tandem abutere, Catilina, patientia nostra?";
MemoryStream test_data = new MemoryStream(Encoding.ASCII.GetBytes(test_data_str));
MemoryStream test_data2 = new MemoryStream(Encoding.ASCII.GetBytes(test_data2_str));
// UNIX時間の精度に合わせるため切り捨てる
DateTime time_stamp = (new DateTime()).AddSeconds(DateTime.Now.Ticks / 10000000);
using (FileStream outfs = new FileStream(atc_filename, FileMode.Create))
{
var locker = new AttacheCase.Locker();
locker.PasswdTryLimit = 5;
locker.SelfDestruction = true;
Assert.AreEqual(locker.Open(outfs, key), AttacheCase.Result.OK);
{
var entry = new AttacheCase.FileEntry();
entry.Attribute = 16;
entry.Size = -1;
entry.NameSJIS = "out\\";
entry.NameUTF8 = "out\\";
entry.ChangeDateTime = time_stamp;
entry.CreateDateTime = time_stamp;
Assert.AreEqual(locker.AddFileEntry(entry), AttacheCase.Result.OK);
}
{
var entry = new AttacheCase.FileEntry();
entry.Attribute = 0;
entry.Size = test_data.Length;
entry.NameSJIS = "out\\test.txt";
entry.NameUTF8 = "out\\test.txt";
entry.ChangeDateTime = time_stamp;
entry.CreateDateTime = time_stamp;
Assert.AreEqual(locker.AddFileEntry(entry), AttacheCase.Result.OK);
}
{
var entry = new AttacheCase.FileEntry();
entry.Attribute = 0;
entry.Size = test_data2.Length;
entry.NameSJIS = "out\\test2.txt";
entry.NameUTF8 = "out\\test2.txt";
entry.ChangeDateTime = time_stamp;
entry.CreateDateTime = time_stamp;
Assert.AreEqual(locker.AddFileEntry(entry), AttacheCase.Result.OK);
}
Assert.AreEqual(locker.WriteEncryptedHeader(outfs), AttacheCase.Result.OK);
Assert.AreEqual(locker.WriteFileData(outfs, test_data, (uint)test_data.Length), AttacheCase.Result.OK);
Assert.AreEqual(locker.WriteFileData(outfs, test_data2, (uint)test_data2.Length), AttacheCase.Result.OK);
Assert.AreEqual(locker.Close(), AttacheCase.Result.OK);
}
using (FileStream infs = new FileStream(atc_filename, FileMode.Open))
{
var unlocker = new AttacheCase.Unlocker();
Assert.AreEqual(unlocker.Open(infs, key), AttacheCase.Result.OK);
Assert.AreEqual(unlocker.PasswdTryLimit, 5);
Assert.IsTrue(unlocker.SelfDestruction);
Assert.AreEqual(unlocker.Entries.Length, 3);
{
var entry = unlocker.Entries[1];
Assert.AreEqual(entry.ChangeDateTime, time_stamp);
Assert.AreEqual(entry.CreateDateTime, time_stamp);
MemoryStream buf = new MemoryStream();
Assert.AreEqual(unlocker.ExtractFileData(buf, infs, (uint)entry.Size), AttacheCase.Result.OK);
buf.Position = 0;
Assert.AreEqual((new StreamReader(buf)).ReadToEnd(), test_data_str);
}
{
var entry = unlocker.Entries[2];
Assert.AreEqual(entry.ChangeDateTime, time_stamp);
Assert.AreEqual(entry.CreateDateTime, time_stamp);
MemoryStream buf = new MemoryStream();
Assert.AreEqual(unlocker.ExtractFileData(buf, infs, (uint)entry.Size), AttacheCase.Result.OK);
buf.Position = 0;
Assert.AreEqual((new StreamReader(buf)).ReadToEnd(), test_data2_str);
}
}
}
public void SelfEncryptionAndDecryption()
{
string key = "This is a pen.";
String atc_filename = "test_.atc";
String test_data_str = "The quick brown fox jumps over the lazy dog";
String test_data2_str = "Quo usque tandem abutere, Catilina, patientia nostra?";
MemoryStream test_data = new MemoryStream(Encoding.ASCII.GetBytes(test_data_str));
MemoryStream test_data2 = new MemoryStream(Encoding.ASCII.GetBytes(test_data2_str));
// UNIX時間の精度に合わせるため切り捨てる
DateTime time_stamp = (new DateTime()).AddSeconds(DateTime.Now.Ticks / 10000000);
using (FileStream outfs = new FileStream(atc_filename, FileMode.Create))
{
var locker = new AttacheCase.Locker();
locker.PasswdTryLimit = 5;
locker.SelfDestruction = true;
Assert.AreEqual(locker.Open(outfs, key), AttacheCase.Result.OK);
{
var entry = new AttacheCase.FileEntry();
entry.Attribute = 16;
entry.Size = -1;
entry.NameSJIS = "out\\";
entry.NameUTF8 = "out\\";
entry.ChangeDateTime = time_stamp;
entry.CreateDateTime = time_stamp;
Assert.AreEqual(locker.AddFileEntry(entry), AttacheCase.Result.OK);
}
{
var entry = new AttacheCase.FileEntry();
entry.Attribute = 0;
entry.Size = test_data.Length;
entry.NameSJIS = "out\\test.txt";
entry.NameUTF8 = "out\\test.txt";
entry.ChangeDateTime = time_stamp;
entry.CreateDateTime = time_stamp;
Assert.AreEqual(locker.AddFileEntry(entry), AttacheCase.Result.OK);
}
{
var entry = new AttacheCase.FileEntry();
entry.Attribute = 0;
entry.Size = test_data2.Length;
entry.NameSJIS = "out\\test2.txt";
entry.NameUTF8 = "out\\test2.txt";
entry.ChangeDateTime = time_stamp;
entry.CreateDateTime = time_stamp;
Assert.AreEqual(locker.AddFileEntry(entry), AttacheCase.Result.OK);
}
Assert.AreEqual(locker.WriteEncryptedHeader(outfs), AttacheCase.Result.OK);
Assert.AreEqual(locker.WriteFileData(outfs, test_data, (uint)test_data.Length), AttacheCase.Result.OK);
Assert.AreEqual(locker.WriteFileData(outfs, test_data2, (uint)test_data2.Length), AttacheCase.Result.OK);
Assert.AreEqual(locker.Close(), AttacheCase.Result.OK);
}
using (FileStream infs = new FileStream(atc_filename, FileMode.Open))
{
var unlocker = new AttacheCase.Unlocker();
Assert.AreEqual(unlocker.Open(infs, key), AttacheCase.Result.OK);
Assert.AreEqual(unlocker.PasswdTryLimit, 5);
Assert.IsTrue(unlocker.SelfDestruction);
Assert.AreEqual(unlocker.Entries.Length, 3);
{
var entry = unlocker.Entries[1];
Assert.AreEqual(entry.ChangeDateTime, time_stamp);
Assert.AreEqual(entry.CreateDateTime, time_stamp);
MemoryStream buf = new MemoryStream();
Assert.AreEqual(unlocker.ExtractFileData(buf, infs, (uint)entry.Size), AttacheCase.Result.OK);
buf.Position = 0;
Assert.AreEqual((new StreamReader(buf)).ReadToEnd(), test_data_str);
}
{
var entry = unlocker.Entries[2];
Assert.AreEqual(entry.ChangeDateTime, time_stamp);
Assert.AreEqual(entry.CreateDateTime, time_stamp);
MemoryStream buf = new MemoryStream();
Assert.AreEqual(unlocker.ExtractFileData(buf, infs, (uint)entry.Size), AttacheCase.Result.OK);
buf.Position = 0;
Assert.AreEqual((new StreamReader(buf)).ReadToEnd(), test_data2_str);
}
}
}
private void Unencrypted_File_Test(String filename)
{
string key = "cosmos";
using (FileStream infs = new FileStream("../../../../test/" + filename, FileMode.Open))
{
AttacheCase.Unlocker unlocker = new AttacheCase.Unlocker();
Assert.AreEqual(unlocker.Open(infs, key), AttacheCase.Result.ERR_UNENCRYPTED_FILE);
}
}
private void Decryption_Test(String filename)
{
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
string key = "cosmos";
if (test_md5.Length == 0)
{
using (FileStream infs = new FileStream("../../../../test/cosmos.jpg", FileMode.Open))
{
byte[] buffer = new byte[infs.Length];
infs.Read(buffer, 0, buffer.Length);
md5.ComputeHash(buffer);
test_md5 = md5.Hash;
md5.Initialize();
}
}
using (FileStream infs = new FileStream("../../../../test/" + filename, FileMode.Open))
{
AttacheCase.Unlocker unlocker = new AttacheCase.Unlocker();
Assert.AreEqual(unlocker.Open(infs, key), AttacheCase.Result.OK);
Assert.AreEqual(unlocker.Entries.Length, 1);
AttacheCase.FileEntry entry = unlocker.Entries[0];
MemoryStream extracted = new MemoryStream();
Assert.AreEqual(unlocker.ExtractFileData(extracted, infs, (uint)entry.Size), AttacheCase.Result.OK);
byte[] buffer = new byte[entry.Size];
extracted.Position = 0;
extracted.Read(buffer, 0, buffer.Length);
md5.ComputeHash(buffer);
Assert.IsTrue(test_md5.SequenceEqual(md5.Hash));
}
}
