public Form5SignEncrypt(string filepath, List <Certificate> currentUsers, List <Certificate> currentImportedUsers)
{
InitializeComponent();
this.filepath = filepath;
if (filepath.Equals(""))
{
Close();
}
fileName = filepath.Split('\\').Last();
string dirName = "";
string[] temp = fileName.Split('.');
for (int i = 0; i < temp.Length - 2; i++)
{
dirName += temp[i] + ".";
}
dirName += temp[temp.Length - 2];
signedEncryptedDirectory = FileDirectory.Create("Recipient\\ReceivedFiles\\" + dirName + "\\");
outputPath = signedEncryptedDirectory + fileName;
CheckBoxControl();
this.currentUsers = currentUsers;
this.currentImportedUsers = currentImportedUsers;
}
// RSA private key'lerin dosyaya yazilmasi
public void SavePrivateKey(string dirName, byte[] passphrase)
{
RSAParametersSerializable rsaPrivateKeyInfoSerializable = new RSAParametersSerializable(rsaPrivateKeyInfo);
rsaPrivateKeyInfoSerializable.Encrypt(passphrase);
Directory.CreateDirectory(FileDirectory.Create(dirName) + "Keys\\");
Serialization.WriteToBinaryFile(FileDirectory.Create(dirName) + "Keys\\" + ID, rsaPrivateKeyInfoSerializable, false);
}
public Form2User(bool isSender)
{
InitializeComponent();
this.isSender = isSender;
if (isSender)
{
groupBoxSender.Visible = true;
groupBoxRecipient.Visible = false;
dataGridViewUser = dataGridViewSender;
dataGridViewImported = dataGridViewSenderImported;
this.Text = "Gönderen";
directoryName = "Sender\\";
filePath = FileDirectory.Create("Sender\\") + "Senders.txt";
importedFilePath = FileDirectory.Create("Sender\\") + "ImportedRecipients.txt";
}
else
{
groupBoxSender.Visible = false;
groupBoxRecipient.Visible = true;
dataGridViewUser = dataGridViewRecipient;
dataGridViewImported = dataGridViewRecipientImported;
this.Text = "Alıcı";
directoryName = "Recipient\\";
filePath = FileDirectory.Create("Recipient\\") + "Recipients.txt";
importedFilePath = FileDirectory.Create("Recipient\\") + "ImportedSenders.txt";
}
// Aktif kullanicinin (gonderen / alici) sertifikalarinin listelenmesi ve passphrase'lerinin dosyadan okunmasi
users = File.Exists(filePath) ? Serialization.ReadFromBinaryFile <List <Certificate> >(filePath) : new List <Certificate>();
importedUsers = File.Exists(importedFilePath) ? Serialization.ReadFromBinaryFile <List <Certificate> >(importedFilePath) : new List <Certificate>();
foreach (Certificate cert in users)
{
DirectoryInfo dirInfo = new DirectoryInfo(FileDirectory.Create(directoryName) + "Passphrases\\"); // try catch
FileInfo[] files = dirInfo.GetFiles();
foreach (FileInfo file in files)
{
if (file.Name.Equals(cert.ID))
{
cert.hashedPassphrase = File.ReadAllBytes(FileDirectory.Create(directoryName) + "Passphrases\\" + cert.ID);
break;
}
}
int dgvColumnIndex = isSender ? 0 : 5;
ListCertsOnDataGrid(cert, dataGridViewUser, dgvColumnIndex);
}
foreach (Certificate cert in importedUsers)
{
int dgvColumnIndex = isSender ? 10 : 15;
ListCertsOnDataGrid(cert, dataGridViewImported, dgvColumnIndex);
}
}
// RSA private key'lerin dosyadan okunmasi
public RSAParameters GetPrivateKey(string dirName, Form form)
{
RSAParametersSerializable rsaPrivateKeyInfoSerializable = null;
DirectoryInfo dirInfo = new DirectoryInfo(FileDirectory.Create(dirName) + "Keys\\");
FileInfo[] files = dirInfo.GetFiles();
foreach (FileInfo file in files)
{
if (file.Name.Equals(ID))
{
rsaPrivateKeyInfoSerializable = Serialization.ReadFromBinaryFile <RSAParametersSerializable>(FileDirectory.Create(dirName) + "Keys\\" + ID);
}
}
Form8Passphrase formPassphrase = new Form8Passphrase(Name);
bool invalidPass = true;
int tryCount = 1;
while (invalidPass && tryCount <= 3)
{
formPassphrase.labelTry.Visible = (tryCount == 2 || tryCount == 3) ? true : false;
formPassphrase.labelTry.Text = "Yanlış parola. Deneme: " + tryCount + " / 3.";
formPassphrase.ShowDialog(form);
byte[] passphrase = null;
if (formPassphrase.DialogResult == DialogResult.OK)
{
passphrase = Encoding.ASCII.GetBytes(formPassphrase.textBoxPassphrase.Text);
byte[] hashedInputPassphrase = SHA256Salted.GenerateSaltedHash(passphrase, salt);
if (SHA256Salted.CompareByteArrays(hashedInputPassphrase, hashedPassphrase))
{
rsaPrivateKeyInfoSerializable.Decrypt(passphrase);
invalidPass = false;
}
else
{
invalidPass = true;
tryCount++;
}
}
else
{
break;
}
}
if (tryCount > 3)
{
return(new RSAParameters());
}
return(rsaPrivateKeyInfoSerializable.RSAParameters);
}
// Secilen sertifikayi ice aktar
private Certificate ImportCertificate()
{
OpenFileDialog openFileDialog = new OpenFileDialog
{
Title = "İçe Aktar",
Filter = "(*.asc) | *.asc",
InitialDirectory = FileDirectory.Create(directoryName) + "ReceivedCertificates\\",
};
Certificate user = null;
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
user = Serialization.ReadFromBinaryFile <Certificate>(openFileDialog.FileName);
}
return(user);
}
// Secilen sertifikayi disa aktar
private void ExportCertificate(DataGridView dataGridView, List <Certificate> users)
{
int index = dataGridView.CurrentCell.RowIndex;
string sendTo = isSender ? "Recipient\\" : "Sender\\";
SaveFileDialog saveFileDialog = new SaveFileDialog
{
Title = "Dışa Aktar",
InitialDirectory = FileDirectory.Create(sendTo) + "ReceivedCertificates\\",
FileName = users[index].ID + ".asc",
//Filter = "(*.asc) | *.asc"
};
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
Serialization.WriteToBinaryFile(saveFileDialog.FileName, users[index], false);
}
}
// Desifrelenecek / dogrulanacak dosyanin secilmesi
private void buttonVerifyDecrypt_Click(object sender, EventArgs e)
{
string filepathToDecrypt = "";
OpenFileDialog openFileDialog = new OpenFileDialog
{
Title = "Deşifrelemek / Doğrulamak İçin Dosya Seçiniz",
Filter = "(*.enc, *.sig) | *.enc; *.sig",
InitialDirectory = FileDirectory.Create(@"Recipient\ReceivedFiles")
};
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
filepathToDecrypt = openFileDialog.FileName;
Form6VerifyDecrypt formVerifyDecrypt = new Form6VerifyDecrypt(filepathToDecrypt, users, importedUsers);
formVerifyDecrypt.Show(this);
}
}
// Alicinin mevcut sertifikalari ice aktarmasi
private void buttonRecipientImport_Click(object sender, EventArgs e)
{
try
{
Certificate user = ImportCertificate();
if (user != null)
{
importedUsers.Add(user);
Serialization.WriteToBinaryFile(FileDirectory.Create("Recipient\\") + "ImportedSenders.txt", importedUsers, false);
int columnIndex = isSender ? 10 : 15;
ListCertsOnDataGrid(user, dataGridViewImported, columnIndex);
}
}
catch
{
return;
}
}
private void formPersonalDetails_FormClosed(object sender, FormClosedEventArgs e)
{
if (formPersonalDetails.DialogResult == DialogResult.OK)
{
string name = formPersonalDetails.textBoxName.Text;
string email = formPersonalDetails.textBoxEmail.Text;
string comment = formPersonalDetails.textBoxComment.Text;
string passphrase = formPersonalDetails.textBoxPassphrase.Text;
user = new Certificate(name, email, comment, passphrase);
users.Add(user);
Serialization.WriteToBinaryFile(filePath, users, false);
user.SavePrivateKey(directoryName, Encoding.ASCII.GetBytes(passphrase));
Directory.CreateDirectory(FileDirectory.Create(directoryName) + "Passphrases\\");
File.WriteAllBytes(FileDirectory.Create(directoryName) + "Passphrases\\" + user.ID, user.hashedPassphrase);
int dgvColumnIndex = isSender ? 0 : 5;
ListCertsOnDataGrid(user, dataGridViewUser, dgvColumnIndex);
}
}
public Form6VerifyDecrypt(string filepath, List <Certificate> currentUsers, List <Certificate> currentImportedUsers)
{
InitializeComponent();
this.filepath = filepath;
string[] pathSplit = filepath.Split('\\').Last().Split('.');
fileName = "";
for (int i = 0; i < pathSplit.Length - 2; i++)
{
fileName += pathSplit[i] + ".";
}
fileName += pathSplit[pathSplit.Length - 2];
string[] temp = filepath.Split('\\');
signedEncryptedDir = FileDirectory.Create("Recipient\\ReceivedFiles\\") + temp[temp.Length - 2] + "\\";
verifiedDecryptedDir = FileDirectory.Create("Recipient\\VerifiedDecryptedFiles\\");
outputPath = verifiedDecryptedDir + fileName;
textBoxPath.Text = outputPath;
this.currentUsers = currentUsers;
this.currentImportedUsers = currentImportedUsers;
}
// Alicinin sertifiklarini disa aktarmasi
private void buttonRecipientExport_Click(object sender, EventArgs e)
{
Directory.CreateDirectory(FileDirectory.Create("Sender\\") + "ReceivedCertificates\\");
ExportCertificate(dataGridViewRecipient, users);
}