/// <summary>
/// Default constructor created or loads the store
/// </summary>
public SecureStorageImplementation()
{
// verify that password is set
if (string.IsNullOrWhiteSpace(StoragePassword))
{
throw new Exception($"Must set StoragePassword");
}
StoragePasswordArray = StoragePassword.ToCharArray();
// Instantiate store and protection
_store = KeyStore.GetInstance(KeyStore.DefaultType);
_passwordProtection = new KeyStore.PasswordProtection(StoragePasswordArray);
// if store exists, load it from the file
try
{
using (var stream = new IsolatedStorageFileStream(StorageFile, FileMode.Open, FileAccess.Read))
{
_store.Load(stream, StoragePasswordArray);
}
}
catch (Exception)
{
// this will happen for the first run. As no file is expected to be present
_store.Load(null, StoragePasswordArray);
}
}
/// <summary>
/// Default constructor created or loads the store
/// </summary>
public SecureStorageImplementation()
{
// verify that password is set
if (string.IsNullOrWhiteSpace(StoragePassword))
{
throw new Exception($"Must set StoragePassword");
}
StoragePasswordArray = StoragePassword.ToCharArray();
// Instantiate store and protection
_store = KeyStore.GetInstance(KeyStore.DefaultType);
_passwordProtection = new KeyStore.PasswordProtection(StoragePasswordArray);
// if store exists, load it from the file
try
{
using (var stream = new IsolatedStorageFileStream(StorageFile, FileMode.Open, FileAccess.Read))
{
_store.Load(stream, StoragePasswordArray);
}
}
catch (Exception)
{
// this will happen for the first run. As no file is expected to be present
_store.Load(null, StoragePasswordArray);
}
}
void InitCipher()
{
try {
mKeyStore.Load(null);
var key = mKeyStore.GetKey(KEY_NAME, null);
mCipher.Init(CipherMode.EncryptMode, key);
} catch (KeyPermanentlyInvalidatedException e) {
// This happens if the lock screen has been disabled or reset after the key was
// generated, or if a fingerprint got enrolled after the key was generated.
Toast.MakeText(this, "Keys are invalidated after created. Retry the purchase\n"
+ e.Message, ToastLength.Long).Show();
} catch (KeyStoreException e) {
throw new RuntimeException("Failed to init Cipher", e);
} catch (CertificateException e) {
throw new RuntimeException("Failed to init Cipher", e);
} catch (UnrecoverableKeyException e) {
throw new RuntimeException("Failed to init Cipher", e);
} catch (IOException e) {
throw new RuntimeException("Failed to init Cipher", e);
} catch (NoSuchAlgorithmException e) {
throw new RuntimeException("Failed to init Cipher", e);
} catch (InvalidKeyException e) {
throw new RuntimeException("Failed to init Cipher", e);
}
}
/// <summary>
/// In Android we have to call this method first.
/// This will make sure that the store will be initialized using a user provided key as password.
/// </summary>
/// <param name="password">The password for the KeyStore</param>
/// <param name="fileName">A filename for the KeyStore</param>
public void Initialize(string password, string fileName = "Excalibur.Store")
{
_password = password.ToCharArray();
_fileName = fileName;
if (_password == null)
{
throw new ArgumentNullException(nameof(_password), "Please call ProtectedStore.Init(<password>, <fileName?>) first.");
}
_context = global::Android.App.Application.Context;
_keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
_passwordProtection = new KeyStore.PasswordProtection(_password);
try
{
lock (FileLock)
{
using (var stream = _context.OpenFileInput(_fileName))
{
_keyStore.Load(stream, _password);
}
}
}
catch (Java.IO.FileNotFoundException)
{
_keyStore.Load(null, _password);
}
catch (Java.IO.IOException)
{
throw new ProtectedStoreException();
}
}
protected override KeyStore ConfigureKeyStore(KeyStore keyStore)
{
if (_keyStore != null)
{
return(_keyStore);
}
_keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
_keyStore.Load(null, null);
CertificateFactory cff = CertificateFactory.GetInstance("X.509");
foreach (var cer in _supported)
{
Java.Security.Cert.Certificate cert;
// Add your Certificate to the Assets folder and address it here by its name
using (var certStream = Android.App.Application.Context.Assets.Open(cer.Value))
{
cert = cff.GenerateCertificate(certStream);
}
_keyStore.SetCertificateEntry(cer.Key, cert);
}
return(_keyStore);
}
private static readonly char[] _password = "******".ToCharArray(); //todo: change this
private void InitializeStore()
{
this._context = Android.App.Application.Context;
_keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
_prot = new KeyStore.PasswordProtection(_password);
try
{
lock (fileLock)
{
if(!this.FileExists(_context, _fileName))
{
LoadEmptyKeyStore(_password);
}
else
{
using (var f = _context.OpenFileInput(_fileName))
{
_keyStore.Load(f, _password);
}
}
}
}
catch (Exception ex) when (ex is Java.IO.FileNotFoundException || ex is System.IO.FileNotFoundException)
{
System.Diagnostics.Debug.WriteLine($"Caught {ex.GetType().ToString()} in Android.AuthService.InitializeStore.");
LoadEmptyKeyStore(_password);
}
}
public FingerprintService(
FragmentActivity fragmentActivity,
Context applicationContext,
IObservable <Unit> applicationActivated,
CoreDispatcher dispatcher,
IScheduler backgroundScheduler,
FuncAsync <BiometricPrompt.PromptInfo> promptInfoBuilder)
{
fragmentActivity.Validation().NotNull(nameof(fragmentActivity));
applicationActivated.Validation().NotNull(nameof(applicationActivated));
backgroundScheduler.Validation().NotNull(nameof(backgroundScheduler));
_dispatcher = dispatcher ?? throw new ArgumentNullException(nameof(dispatcher));
_promptInfoBuilder = promptInfoBuilder ?? throw new ArgumentNullException(nameof(promptInfoBuilder));
var executor = ContextCompat.GetMainExecutor(applicationContext);
var callback = new AuthenticationCallback(OnAuthenticationSucceeded, OnAuthenticationFailed, OnAuthenticationError);
_BiometricPrompt = new BiometricPrompt(fragmentActivity, executor, callback);
_BiometricManager = BiometricManager.From(Application.Context);
_keyStore = KeyStore.GetInstance(ANDROID_KEYSTORE);
_keyStore.Load(null);
_canAuthenticate =
applicationActivated
.ObserveOn(backgroundScheduler)
.StartWith(backgroundScheduler, Unit.Default)
.Select(_ => _BiometricManager.CanAuthenticate())
.Replay(1, backgroundScheduler)
.RefCount();
}
public static string DecodeBase64AndDecrypt(
string alias,
string cipherText)
{
byte[] full = Convert.FromBase64String(cipherText);
byte[] iv = new byte[16];
byte[] cipherBytes = new byte[full.Length - 16];
Array.Copy(full, iv, iv.Length);
Array.Copy(full, 16, cipherBytes, 0, cipherBytes.Length);
KeyStore keyStore = KeyStore.GetInstance("AndroidKeyStore");
keyStore.Load(null);
Cipher cipher = Cipher.GetInstance("AES/CBC/PKCS7Padding");
IvParameterSpec spec = new IvParameterSpec(iv);
ISecretKey key = GetSecretKey(keyStore, alias);
if (key != null)
{
cipher.Init(CipherMode.DecryptMode, key, spec);
byte[] plainTextBytes = cipher.DoFinal(cipherBytes);
string plainText = System.Text.Encoding.UTF8.GetString(plainTextBytes);
return(plainText);
}
else
{
return(String.Empty);
}
}
public PlatformEncryptionKeyHelper(Context context, string keyName)
{
_context = context;
_keyName = keyName.ToLowerInvariant();
_androidKeyStore = KeyStore.GetInstance(KEYSTORE_NAME);
_androidKeyStore.Load(null);
}
public KeyStoreImpl(Context context, string keyStoreAlias)
{
appContext = context;
alias = keyStoreAlias;
keyStore = KeyStore.GetInstance(CONST_ANDROIDKEY);
keyStore.Load(null);
}
public Task <bool> ValidateIntegrityAsync()
{
if (Build.VERSION.SdkInt < BuildVersionCodes.M)
{
return(Task.FromResult(true));
}
_keystore.Load(null);
IKey key = _keystore.GetKey(KeyName, null);
Cipher cipher = Cipher.GetInstance(Transformation);
try
{
cipher.Init(CipherMode.EncryptMode, key);
}
catch (KeyPermanentlyInvalidatedException e)
{
// Biometric has changed
return(Task.FromResult(false));
}
catch (UnrecoverableKeyException e)
{
// Biometric was disabled and re-enabled
return(Task.FromResult(false));
}
catch (InvalidKeyException e)
{
// Fallback for old bitwarden users without a key
CreateKey();
}
return(Task.FromResult(true));
}
public void Init(string protectionPassword)
{
if (string.IsNullOrWhiteSpace(protectionPassword))
{
throw new ArgumentException("Cannot initialize without protection password.", nameof(protectionPassword));
}
_userSelectedPassword = protectionPassword.ToCharArray();
_keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
_passwordProtection = new KeyStore.PasswordProtection(_userSelectedPassword);
try
{
lock (_fileLock)
{
using (var s = Context.OpenFileInput(FileName))
{
_keyStore.Load(s, _userSelectedPassword);
}
}
}
catch (FileNotFoundException)
{
LoadEmptyKeyStore(_userSelectedPassword);
}
_keychainInitialized = true;
}
public CryptoObjectHelper(CipherMode cipherMode, byte[] iv)
{
_mode = cipherMode;
_iv = iv;
_keystore = KeyStore.GetInstance(KEYSTORE_NAME);
_keystore.Load(null);
}
/// <exception cref="System.IO.IOException"/>
/// <exception cref="GeneralSecurityException"/>
internal X509TrustManager LoadTrustManager()
{
X509TrustManager trustManager = null;
KeyStore ks = KeyStore.GetInstance(type);
lastLoaded = file.LastModified();
FileInputStream @in = new FileInputStream(file);
try
{
ks.Load(@in, password.ToCharArray());
Log.Debug("Loaded truststore '" + file + "'");
}
finally
{
@in.Close();
}
TrustManagerFactory trustManagerFactory = TrustManagerFactory.GetInstance(SSLFactory
.Sslcertificate);
trustManagerFactory.Init(ks);
TrustManager[] trustManagers = trustManagerFactory.GetTrustManagers();
foreach (TrustManager trustManager1 in trustManagers)
{
if (trustManager1 is X509TrustManager)
{
trustManager = (X509TrustManager)trustManager1;
break;
}
}
return(trustManager);
}
public void CreateStore()
{
this.context = Android.App.Application.Context;
ks = KeyStore.GetInstance(KeyStore.DefaultType);
prot = new KeyStore.PasswordProtection(Password);
try
{
lock (fileLock)
{
using (var s = context.OpenFileInput(FileName))
{
ks.Load(s, Password);
}
}
}
catch (Java.IO.FileNotFoundException)
{
//ks.Load (null, Password);
LoadEmptyKeyStore(Password);
}
}
public AndroidAccountManagerPreM(Context context, string sharedPreferenceName)
{
_context = context;
_sharedPreferenceName = sharedPreferenceName;
_keyStore = KeyStore.GetInstance(AndroidKeyStore);
_keyStore.Load(null);
}
public KeyStoreStorageService(char[] password)
{
_keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
_protection = new KeyStore.PasswordProtection(password);
if (File.FileExists(StorageFile))
{
using (var stream = new IsolatedStorageFileStream(StorageFile, FileMode.Open, FileAccess.Read, File))
{
_keyStore.Load(stream, password);
}
}
else
{
_keyStore.Load(null, password);
}
}
/// <summary>
/// Preinitialize fields
/// </summary>
public static void InitializeSecuritySystem()
{
_keyStore = KeyStore.GetInstance(STORE_NAME);
_keyStore.Load(null);
_notes_path = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), "notes.dat");
_tDES_key_path = Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal), "key.dat");
}
/// <exception cref="GeneralSecurityException"/>
/// <exception cref="System.IO.IOException"/>
private static KeyStore CreateEmptyKeyStore()
{
KeyStore ks = KeyStore.GetInstance("JKS");
ks.Load(null, null);
// initialize
return(ks);
}
private void InitCipher(Cipher cipher, string storeKeyName)
{
try
{
keyStore.Load(null);
IKey secretKey = keyStore.GetKey(storeKeyName, null);
cipher.Init(CipherMode.EncryptMode, secretKey);
}
catch (Java.Lang.Exception e)
{
if (e is KeyStoreException | e is CertificateException | e is UnrecoverableKeyException | e is IOException
| e is NoSuchAlgorithmException | e is InvalidKeyException)
{
throw new RuntimeException("Failed to init Cipher. " + e.Message, e);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Xamarin.Auth.AndroidAccountStore"/> class
/// with a KeyStore password provided by the application.
/// </summary>
/// <param name="context">Context.</param>
/// <param name="password">KeyStore Password.</param>
public AndroidAccountStore(Context context, string password)
{
if (password == null)
{
throw new ArgumentNullException("password");
}
Password = password.ToCharArray();
this.context = context;
ks = KeyStore.GetInstance(KeyStore.DefaultType);
prot = new KeyStore.PasswordProtection(Password);
try
{
lock (fileLock)
{
if (!this.FileExists(context, FileName))
{
LoadEmptyKeyStore(Password);
}
else
{
using (var s = context.OpenFileInput(FileName))
{
ks.Load(s, Password);
}
}
}
}
catch (FileNotFoundException)
{
LoadEmptyKeyStore(Password);
}
catch (Java.IO.IOException ex)
{
if (ex.Message == "KeyStore integrity check failed.")
{
// Migration scenario: this exception means that the keystore could not be opened
// with the app provided password, so there is probably an existing keystore
// that was encoded with the old hard coded password, which was deprecated.
// We'll try to open the keystore with the old password, and migrate the contents
// to a new one that will be encoded with the new password.
//MigrateKeyStore(context);
try
{
//try with the original password
MigrateKeyStore(context, PasswordHardCodedOriginal);
}
catch (System.Exception)
{
//migrate using the default
MigrateKeyStore(context);
}
}
}
}
private async Task <KeyStore> GetOrCreateKeyStoreAsync(char[] password)
{
KeyStore keyStore = KeyStore.GetInstance("BKS");
try
{
using (Stream inputStream = await OpenKeyStoreFileForInputAsync().ConfigureAwait(false))
{
keyStore.Load(inputStream, password);
}
}
catch (Exception)
{
keyStore.Load(null);
}
return(keyStore);
}
public KeyStoreCryptoService()
{
_keyStore = KeyStore.GetInstance("AndroidKeyStore");
_keyStore.Load(null);
if (!_keyStore.ContainsAlias(_alias))
{
CreateNewKey(_alias);
}
}
private void GenKey()
{
keyStore = KeyStore.GetInstance("AndroidKeyStore");
KeyGenerator keyGenerator = null;
keyGenerator = KeyGenerator.GetInstance(KeyProperties.KeyAlgorithmAes, "AndroidKeyStore");
keyStore.Load(null);
keyGenerator.Init(new KeyGenParameterSpec.Builder(KEY_NAME, KeyStorePurpose.Encrypt | KeyStorePurpose.Decrypt).SetBlockModes(KeyProperties.BlockModeCbc).SetUserAuthenticationRequired(true).SetEncryptionPaddings(KeyProperties.EncryptionPaddingPkcs7).Build());
keyGenerator.GenerateKey();
}
void SetupSSL(HttpsURLConnection httpsConnection)
{
if (httpsConnection == null)
{
return;
}
SSLSocketFactory socketFactory = ConfigureCustomSSLSocketFactory(httpsConnection);
if (socketFactory != null)
{
httpsConnection.SSLSocketFactory = socketFactory;
return;
}
KeyStore keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
keyStore.Load(null, null);
bool gotCerts = TrustedCerts?.Count > 0;
if (gotCerts)
{
for (int i = 0; i < TrustedCerts.Count; i++)
{
Certificate cert = TrustedCerts [i];
if (cert == null)
{
continue;
}
keyStore.SetCertificateEntry($"ca{i}", cert);
}
}
keyStore = ConfigureKeyStore(keyStore);
KeyManagerFactory kmf = ConfigureKeyManagerFactory(keyStore);
TrustManagerFactory tmf = ConfigureTrustManagerFactory(keyStore);
if (tmf == null)
{
// If there are no certs and no trust manager factory, we can't use a custom manager
// because it will cause all the HTTPS requests to fail because of unverified trust
// chain
if (!gotCerts)
{
return;
}
tmf = TrustManagerFactory.GetInstance(TrustManagerFactory.DefaultAlgorithm);
tmf.Init(keyStore);
}
SSLContext context = SSLContext.GetInstance("TLS");
context.Init(kmf?.GetKeyManagers(), tmf.GetTrustManagers(), null);
httpsConnection.SSLSocketFactory = context.SocketFactory;
}
private void _algoritmCriptare()
{
_creareCheie = KeyStore.GetInstance("AndroidKeyStore");
KeyGenerator _generator = null;
_generator = KeyGenerator.GetInstance(_algoCheie, "AndroidKeyStore");
_creareCheie.Load(null);
_generator.Init(new KeyGenParameterSpec.Builder(_cheie, KeyStorePurpose.Encrypt | KeyStorePurpose.Decrypt)
.SetBlockModes(_dependenta).SetUserAuthenticationRequired(true)
.SetEncryptionPaddings(_umplere).Build());
_generator.GenerateKey();
}
public AndroidKeyStoreStorageService(ISettings settings)
{
_oldAndroid = Build.VERSION.SdkInt < BuildVersionCodes.M;
_rsaMode = _oldAndroid ? "RSA/ECB/PKCS1Padding" : "RSA/ECB/OAEPWithSHA-1AndMGF1Padding";
_settings = settings;
_keyStore = KeyStore.GetInstance(AndroidKeyStore);
_keyStore.Load(null);
GenerateStoreKey();
GenerateAesKey();
}
private string GetPrivateKey()
{
try
{
var keyStore = KeyStore.Load(_password, _appsetting.Keystore);
return(keyStore.PrivateKey.ToString());
}
catch (Exception e)
{
_logger.Error($"Marvin was unable to open the KeyStore, did you enter the correct password? \n {e}");
throw new Exception(e.ToString());
}
}
public bool InitCipher()
{
try
{
mKeyStore.Load(null);
var key = mKeyStore.GetKey(KEY_NAME, null);
mCipher.Init(CipherMode.EncryptMode, key);
return(true);
}
catch (KeyPermanentlyInvalidatedException)
{
return(false);
}
catch (KeyStoreException e)
{
throw new RuntimeException("Failed to init Cipher", e);
}
catch (CertificateException e)
{
throw new RuntimeException("Failed to init Cipher", e);
}
catch (UnrecoverableKeyException e)
{
throw new RuntimeException("Failed to init Cipher", e);
}
catch (IOException e)
{
throw new RuntimeException("Failed to init Cipher", e);
}
catch (NoSuchAlgorithmException e)
{
throw new RuntimeException("Failed to init Cipher", e);
}
catch (InvalidKeyException e)
{
throw new RuntimeException("Failed to init Cipher", e);
}
}
public PasswordStorage(string fileName, char[] passkey)
{
this.filename = fileName;
this.PassKey = passkey;
this.keystore = KeyStore.GetInstance(KeyStore.DefaultType);
this.protection = new KeyStore.PasswordProtection(this.PassKey);
if (File.Exists(this.filename))
{
lock (this.locker)
{
using (var stream = new FileStream(fileName, FileMode.Open))
{
keystore.Load(stream, passkey);
}
}
}
else
{
keystore.Load(null, passkey);
}
}
public KeyStoreAccess()
{
filename = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "pseadata");
keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
Java.IO.File fileTest = new Java.IO.File(filename);
// if an existing keystore is there then use it. Otherwise, create a new,
// empty keystore
if (fileTest.Exists() && fileTest.IsFile && fileTest.CanRead() && fileTest.CanWrite())
{
//FileInputStream file = new FileInputStream(filename);
using (System.IO.FileStream file = new FileStream(filename, FileMode.Open))
{
keyStore.Load(file, Password.GetPassword());
file.Close();
}
}
else
{
keyStore.Load(null, Password.GetPassword());
}
}
public KeyStoreAccess()
{
filename = System.IO.Path.Combine(System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "pseadata");
keyStore = KeyStore.GetInstance(KeyStore.DefaultType);
Java.IO.File fileTest = new Java.IO.File(filename);
// if an existing keystore is there then use it. Otherwise, create a new,
// empty keystore
if (fileTest.Exists() && fileTest.IsFile && fileTest.CanRead() && fileTest.CanWrite())
{
//FileInputStream file = new FileInputStream(filename);
using (System.IO.FileStream file = new FileStream(filename, FileMode.Open))
{
keyStore.Load(file, Password.GetPassword());
file.Close();
}
}
else
{
keyStore.Load(null, Password.GetPassword());
}
}
public AndroidAccountStore (Context context)
{
this.context = context;
ks = KeyStore.GetInstance (KeyStore.DefaultType);
prot = new KeyStore.PasswordProtection (Password);
try {
lock (fileLock) {
using (var s = context.OpenFileInput (FileName)) {
ks.Load (s, Password);
}
}
}
catch (FileNotFoundException) {
//ks.Load (null, Password);
LoadEmptyKeyStore (Password);
}
}
public PasswordStorage(string fileName, char[] passkey)
{
this.filename = fileName;
this.PassKey = passkey;
this.keystore = KeyStore.GetInstance (KeyStore.DefaultType);
this.protection = new KeyStore.PasswordProtection (this.PassKey);
if (File.Exists (this.filename))
{
lock (this.locker)
{
using (var stream = new FileStream (fileName, FileMode.Open))
{
keystore.Load (stream, passkey);
}
}
}
else
{
keystore.Load (null, passkey);
}
}
public CryptoObjectHelper()
{
_keystore = KeyStore.GetInstance(KEYSTORE_NAME);
_keystore.Load(null);
}