private void exportCertificateToolStripMenuItem_Click(object sender, EventArgs e)
{
if (lstItems.SelectedItems.Count <= 0)
{
return;
}
EnrolledYubikey item = lstItems.SelectedItems[0].Tag as EnrolledYubikey;
if (item == null)
{
return;
}
X509Certificate2 cert = new X509Certificate2(item.Certificate.RawCertificate);
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.FileName = item.DeviceSerial + "-" + cert.SerialNumber + ".crt";
DialogResult dlgResult = saveFileDialog.ShowDialog();
if (dlgResult != DialogResult.OK)
{
return;
}
using (Stream fs = saveFileDialog.OpenFile())
{
byte[] data = cert.GetRawCertData();
fs.Write(data, 0, data.Length);
}
}
public DlgResetPin(EnrolledYubikey key)
{
_yubikey = key;
if (_yubikey == null)
{
throw new ArgumentNullException("key");
}
InitializeComponent();
}
public DlgPleaseInsertYubikey(EnrolledYubikey key)
{
_key = key;
CheckForYubikey();
InitializeComponent();
lblSerial.Text = _key.DeviceSerial.ToString();
lblUsername.Text = _key.Username;
}
private void resetPINToolStripMenuItem_Click(object sender, EventArgs e)
{
if (lstItems.SelectedItems.Count <= 0)
{
return;
}
EnrolledYubikey item = lstItems.SelectedItems[0].Tag as EnrolledYubikey;
if (item == null)
{
return;
}
DlgResetPin changePin = new DlgResetPin(item);
changePin.ShowDialog();
}
private void viewCertificateToolStripMenuItem_Click(object sender, EventArgs e)
{
if (lstItems.SelectedItems.Count <= 0)
{
return;
}
EnrolledYubikey item = lstItems.SelectedItems[0].Tag as EnrolledYubikey;
if (item == null)
{
return;
}
X509Certificate2 cert = new X509Certificate2(item.Certificate.RawCertificate);
X509Certificate2UI.DisplayCertificate(cert);
}
private void RefreshSelectedKeyInfo()
{
foreach (Control control in gbSelectedKey.Controls)
{
if (control.Name.StartsWith("lbl"))
{
control.Visible = lstItems.SelectedItems.Count == 1;
}
}
foreach (Control control in gbSelectedKeyCertificate.Controls)
{
if (control.Name.StartsWith("lbl"))
{
control.Visible = lstItems.SelectedItems.Count == 1;
}
}
if (lstItems.SelectedItems.Count <= 0)
{
return;
}
EnrolledYubikey item = lstItems.SelectedItems[0].Tag as EnrolledYubikey;
if (item == null)
{
return;
}
lblYubikeySerial.Text = item.DeviceSerial.ToString();
lblYubikeyFirmware.Text = item.YubikeyVersions.NeoFirmware;
lblYubikeyPivVersion.Text = item.YubikeyVersions.PivApplet;
lblCertCA.Text = item.CA;
lblCertEnrolledOn.Text = item.EnrolledAt.ToString();
lblCertSerial.Text = item.Certificate.Serial;
lblCertThumbprint.Text = item.Certificate.Thumbprint;
lblCertUser.Text = item.Username;
}
private void revokeToolStripMenuItem_Click_1(object sender, EventArgs e)
{
if (lstItems.SelectedItems.Count <= 0)
{
return;
}
EnrolledYubikey item = lstItems.SelectedItems[0].Tag as EnrolledYubikey;
if (item == null)
{
return;
}
DialogResult dlgResult = MetroMessageBox.Show(this, "Revoke the certificate enrolled at " + item.EnrolledAt.ToLocalTime() + " for " + item.Username + ". This action will revoke " +
"the certificate, but will NOT wipe the yubikey." + Environment.NewLine + Environment.NewLine +
"Certificate: " + item.Certificate.Serial + Environment.NewLine +
"Subject: " + item.Certificate.Subject + Environment.NewLine +
"Issuer: " + item.Certificate.Issuer + Environment.NewLine +
"Valid: " + item.Certificate.StartDate + " to " + item.Certificate.ExpireDate,
"Revoke certificate?", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button2);
if (dlgResult != DialogResult.Yes)
{
return;
}
DlgProgress prg = new DlgProgress("Revoking certificate");
prg.WorkerAction = worker =>
{
worker.ReportProgress(20, "Revoking certificate ...");
// Begin
try
{
CertificateUtilities.RevokeCertificate(item.CA, item.Certificate.Serial);
// Revoked
_dataStore.Remove(item);
}
catch (Exception ex)
{
MetroMessageBox.Show(this,
"Unable to revoke certificate " + item.Certificate.Serial + " of " + item.CA +
" enrolled on " + item.EnrolledAt + ". There was an error." + Environment.NewLine +
Environment.NewLine + ex.Message, "An error occurred.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
worker.ReportProgress(100, string.Empty);
// Write to disk
_dataStore.Save(FileStore);
};
prg.ShowDialog();
RefreshUserStore();
RefreshInsertedKey();
}
private void EnrollWorkerOnDoWork(object sender, DoWorkEventArgs doWorkEventArgs)
{
string devName = YubikeyNeoManager.Instance.ListDevices().FirstOrDefault();
bool hasDevice = !string.IsNullOrEmpty(devName);
if (!hasDevice)
{
throw new InvalidOperationException("No yubikey");
}
// 0. Get lock on yubikey
using (YubikeyNeoDevice dev = YubikeyNeoManager.Instance.OpenDevice(devName))
{
// 1. Prep device info
int deviceId = dev.GetSerialNumber();
string neoFirmware = dev.GetVersion().ToString();
Version pivFirmware;
using (YubikeyPivDevice piv = YubikeyPivManager.Instance.OpenDevice(devName))
pivFirmware = piv.GetVersion();
_enrollWorker.ReportProgress(1);
// 2 - Generate PUK, prep PIN
byte[] randomKey = Utilities.GenerateRandomKey();
string puk = Utilities.MapBytesToString(randomKey.Take(8).ToArray());
string pin = txtPin.Text;
_enrollWorker.ReportProgress(2);
// 3 - Prep CA
WindowsCertificate enrollmentAgent = WindowsCertStoreUtilities.FindCertificate(_settings.EnrollmentAgentCertificate);
string ca = _settings.CSREndpoint;
string caTemplate = _settings.EnrollmentCaTemplate;
string user = txtUser.Text;
if (enrollmentAgent == null)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to find the certificate with thumbprint: " + _settings.EnrollmentAgentCertificate;
return;
}
_enrollWorker.ReportProgress(3);
// 4 - Prep Management Key
// TODO: Consider a new key every time?
byte[] mgmKey = _settings.EnrollmentManagementKey;
_enrollWorker.ReportProgress(4);
RSAParameters publicKey;
X509Certificate2 cert;
byte[] chuid;
using (YubikeyPivDevice pivTool = YubikeyPivManager.Instance.OpenDevice(devName))
{
// 5 - Yubico: Reset device
pivTool.BlockPin();
pivTool.BlockPuk();
bool reset = pivTool.ResetDevice();
if (!reset)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to reset the YubiKey";
return;
}
_enrollWorker.ReportProgress(5);
// 6 - Yubico: Management Key
bool authenticated = pivTool.Authenticate(YubikeyPivDevice.DefaultManagementKey);
if (!authenticated)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to authenticate with the YubiKey";
return;
}
bool setMgmKey = pivTool.SetManagementKey(mgmKey);
if (!setMgmKey)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to set the management key";
return;
}
_enrollWorker.ReportProgress(6);
// 7 - Yubico: Set CHUID
bool setChuid = pivTool.SetCHUID(Guid.NewGuid(), out chuid);
if (!setChuid)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to set CHUID";
return;
}
_enrollWorker.ReportProgress(7);
// 8 - Yubico: PIN
int tmp;
bool setPin = pivTool.ChangePin(YubikeyPivDevice.DefaultPin, pin, out tmp);
if (!setPin)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to set the PIN code";
return;
}
_enrollWorker.ReportProgress(8);
// 9 - Yubico: PUK
bool setPuk = pivTool.ChangePuk(YubikeyPivDevice.DefaultPuk, puk, out tmp);
if (!setPuk)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to set the PUK code";
return;
}
_enrollWorker.ReportProgress(9);
// 10 - Yubico: Generate Key
YubikeyAlgorithm algorithm = (YubikeyAlgorithm)drpAlgorithm.SelectedItem;
bool keyGenerated = pivTool.GenerateKey9a(algorithm.Value, out publicKey);
if (!keyGenerated)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to generate a keypair";
return;
}
_enrollWorker.ReportProgress(10);
}
// 11 - Yubico: Make CSR
string csr;
string csrError;
bool madeCsr = MakeCsr(Utilities.ExportPublicKeyToPEMFormat(publicKey), pin, out csrError, out csr);
if (!madeCsr)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to generate a CSR" + Environment.NewLine + csrError;
return;
}
_enrollWorker.ReportProgress(11);
// 12 - Enroll
string enrollError;
bool enrolled = CertificateUtilities.Enroll(user, enrollmentAgent, ca, caTemplate, csr, out enrollError, out cert);
if (!enrolled)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to enroll a certificate." + Environment.NewLine + enrollError;
return;
}
_enrollWorker.ReportProgress(12);
using (YubikeyPivDevice pivTool = YubikeyPivManager.Instance.OpenDevice(devName))
{
// 13 - Yubico: Import Cert
bool authenticatedForCert = pivTool.Authenticate(mgmKey);
if (!authenticatedForCert)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = "Unable to authenticate prior to importing a certificate";
return;
}
YubicoPivReturnCode imported = pivTool.SetCertificate9a(cert);
if (imported != YubicoPivReturnCode.YKPIV_OK)
{
doWorkEventArgs.Cancel = true;
_enrollWorkerMessage = $"Unable to import a certificate, return code {imported}";
return;
}
_enrollWorker.ReportProgress(13);
}
// 14 - Create enrolled item
EnrolledYubikey newEnrollment = new EnrolledYubikey();
newEnrollment.DeviceSerial = deviceId;
newEnrollment.Certificate.Serial = cert.SerialNumber;
newEnrollment.Certificate.Thumbprint = cert.Thumbprint;
newEnrollment.Certificate.Subject = cert.Subject;
newEnrollment.Certificate.Issuer = cert.Issuer;
newEnrollment.Certificate.StartDate = cert.NotBefore;
newEnrollment.Certificate.ExpireDate = cert.NotAfter;
newEnrollment.Certificate.RawCertificate = cert.RawData;
newEnrollment.CA = ca;
newEnrollment.Username = user;
newEnrollment.ManagementKey = mgmKey;
newEnrollment.PukKey = puk;
newEnrollment.Chuid = BitConverter.ToString(chuid).Replace("-", "");
newEnrollment.EnrolledAt = DateTime.UtcNow;
newEnrollment.YubikeyVersions.NeoFirmware = neoFirmware;
newEnrollment.YubikeyVersions.PivApplet = pivFirmware.ToString();
_dataStore.Add(newEnrollment);
_enrollWorker.ReportProgress(14);
// 15 - Save store
_dataStore.Save(MainForm.FileStore);
_enrollWorker.ReportProgress(15);
// Report
doWorkEventArgs.Cancel = false;
_enrollWorkerMessage = "Success";
}
}
private void terminateToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (lstItems.SelectedItems.Count <= 0)
{
return;
}
EnrolledYubikey item = lstItems.SelectedItems[0].Tag as EnrolledYubikey;
if (item == null)
{
return;
}
X509Certificate2 currentCert = new X509Certificate2(item.Certificate.RawCertificate);
DialogResult dlgResult = MessageBox.Show("This will terminate the Yubikey, wiping the PIN, PUK, Management Key and Certificates. " +
"This will also revoke the certificate. Proceeed?" + Environment.NewLine + Environment.NewLine +
"Will revoke: " + currentCert.Subject + Environment.NewLine +
"By: " + currentCert.Issuer, "Terminate (WILL revoke)",
MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button2);
if (dlgResult != DialogResult.Yes)
{
return;
}
DlgPleaseInsertYubikey yubiWaiter = new DlgPleaseInsertYubikey(item);
DialogResult result = yubiWaiter.ShowDialog();
if (result != DialogResult.OK)
{
return;
}
DlgProgress prg = new DlgProgress("Terminating certificate");
prg.WorkerAction = worker =>
{
worker.ReportProgress(20, "Revoking certificate ...");
// Begin
try
{
CertificateUtilities.RevokeCertificate(item.CA, item.Certificate.Serial);
// Revoked
_dataStore.Remove(item);
}
catch (Exception ex)
{
MessageBox.Show(
"Unable to revoke certificate " + item.Certificate.Serial + " of " + item.CA +
" enrolled on " + item.EnrolledAt + ". There was an error." + Environment.NewLine +
Environment.NewLine + ex.Message, "An error occurred.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
// Wipe the Yubikey
worker.ReportProgress(50, "Wiping Yubikey ...");
string devName = YubikeyPivManager.Instance.ListDevices().FirstOrDefault();
bool hasDevice = !string.IsNullOrEmpty(devName);
if (hasDevice)
{
using (YubikeyPivDevice dev = YubikeyPivManager.Instance.OpenDevice(devName))
{
int serial = (int)dev.GetSerialNumber();
if (item.DeviceSerial != serial)
{
// Something went seriously wrong - perhaps the user switched keys?
MessageBox.Show("Unable to reset the yubikey. The inserted key did not match the key you wanted to wipe.", "An error occurred.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
}
using (YubikeyPivDevice piv = YubikeyPivManager.Instance.OpenDevice(devName))
{
piv.BlockPin();
worker.ReportProgress(70);
piv.BlockPuk();
worker.ReportProgress(90);
bool reset = piv.ResetDevice();
if (!reset)
{
MessageBox.Show("Unable to reset the yubikey. Try resetting it manually.", "An error occurred.", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
worker.ReportProgress(100);
}
}
// Write to disk
_dataStore.Save(FileStore);
};
prg.ShowDialog();
RefreshUserStore();
RefreshInsertedKey();
}
public void Remove(EnrolledYubikey key)
{
Yubikeys.Remove(key);
}
public void Add(EnrolledYubikey key)
{
Yubikeys.Add(key);
}
