public void clearResultText()
{
if (String.IsNullOrEmpty(resultText))
{
BytesBuilder.ClearString(resultText);
}
}
public void recordsToFile()
{
StringBuilder sb = new StringBuilder();
foreach (var record in records)
{
sb.AppendLine(record.Value.mainTag);
sb.AppendLine(record.Value.crypt);
sb.AppendLine(record.Value.pwd);
foreach (var tag in record.Value.tags)
{
sb.AppendLine(tag);
}
sb.AppendLine();
}
var content = sb.ToString();
sb.Clear();
var curKey = key.getObjectValue();
var sha = new SHA3(content.Length);
var bytes = sha.multiCryptLZMA(new UTF32Encoding().GetBytes(content), curKey, null, 22, false, 0, SHA3.getHashCountForMultiHash() - 8);
File.WriteAllBytes(fileName, bytes);
BytesBuilder.ClearString(content);
BytesBuilder.ToNull(curKey);
BytesBuilder.ToNull(bytes);
}
public void clear(bool notTagsClear = false)
{
BytesBuilder.ClearString(mainTag);
BytesBuilder.ClearString(pwd);
BytesBuilder.ClearString(crypt);
if (!notTagsClear)
{
foreach (var tag in tags)
{
BytesBuilder.ClearString(tag);
}
tags.Clear();
}
}
public string crypt(string str, PasswordSecure pwd = null)
{
if (pwd == null)
{
pwd = key;
}
var sha = new SHA3(str.Length);
if (random == null)
{
var inits = str + DateTime.Now.ToString("r");
var t = new UTF32Encoding().GetBytes(inits);
var bbi = new BytesBuilder();
bbi.add(t);
bbi.add(sha.CreateInitVector(0, 64, 40));
var init = bbi.getBytes();
random = new SHA3.SHA3Random(init);
bbi.clear();
BytesBuilder.ClearString(inits);
BytesBuilder.ToNull(init);
}
var bytes = new UTF32Encoding().GetBytes(str);
var openKey = pwd.getObjectValue();
var crypted = sha.multiCryptLZMA(bytes, openKey, null, 22, false);
BytesBuilder.BytesToNull(openKey);
BytesBuilder.BytesToNull(bytes);
BytesBuilder.ClearString(str);
return(Convert.ToBase64String(crypted));
}
void cnt_closedEventDecrypt(Form1.OpenFileDialogContext context, bool isOK)
{
if (!isOK)
{
return;
}
toStart:
DoublePasswordForm pwdForm1, pwdForm2 = null;
bool isSuccess = false;
do
{
pwdForm1 = new DoublePasswordForm(1, Path.GetFileName(context.dialog.FileName));
pwdForm1.ShowDialog();
if (pwdForm1.resultText == null)
{
return;
}
if (pwdForm1.resultText.Length < 6)
{
MessageBox.Show("Извините, но введённый текст настолько мал, что не может являться паролем", "Шифрование", MessageBoxButtons.OK, MessageBoxIcon.Stop);
continue;
}
if (pwdForm1.fromFile)
{
break;
}
pwdForm2 = new DoublePasswordForm(2, Path.GetFileName(context.dialog.FileName));
pwdForm2.ShowDialog();
if (pwdForm2.cancel)
{
pwdForm1.clearResultText();
return;
}
if (!String.IsNullOrEmpty(pwdForm2.resultText) && pwdForm1.resultText != pwdForm2.resultText)
{
pwdForm1.clearResultText();
pwdForm2.clearResultText();
if (MessageBox.Show("Введённые пароли не равны друг другу\r\nХотите попробовать ещё раз?", "Шифрование", MessageBoxButtons.YesNo) != System.Windows.Forms.DialogResult.Yes)
{
return;
}
}
else
{
isSuccess = true;
}
}while (!isSuccess);
ClearKey();
ClearWindow();
byte[] key1;
Form1.GetKeyByPassword(pwdForm1, out key1, 22);
pwdForm1.clearResultText();
pwdForm2.clearResultText();
var sha = new SHA3(0);
var fi = new FileInfo(context.dialog.FileName);
fileName = fi.FullName;
if (!fi.Exists)
{
var newBytes = sha.multiCryptLZMA(new byte[0], key1, null, 12, false, 0, SHA3.getHashCountForMultiHash() - 8);
File.WriteAllBytes(fileName, newBytes);
}
try
{
var openFile = File.ReadAllBytes(fileName);
var decryptedFile = sha.multiDecryptLZMA(openFile, key1);
if (decryptedFile == null)
{
MessageBox.Show("Файл расшифровать не удалось");
BytesBuilder.BytesToNull(key1);
goto toStart;
}
this.key = new PasswordSecure(key1);
var str = Encoding.UTF32.GetString(decryptedFile);
BytesBuilder.ToNull(openFile);
BytesBuilder.ToNull(decryptedFile);
GetRecordsFromFile(str);
BytesBuilder.ClearString(str);
}
catch (Exception e)
{
MessageBox.Show("Расшифрование не удалось! " + e.Message, "Расшифрование не удалось", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
SetTagsAndMainTags();
}
private void FormCrypt_FormClosed(object sender, FormClosedEventArgs e)
{
BytesBuilder.ToNull(key);
BytesBuilder.ClearString(FileName);
}
