如何在android中创建指纹授权？

我想为我的应用程序创建密码和指纹授权。我知道如何做密码部分，但我的问题是如何创建指纹授权？如何在android中创建指纹授权？

所以，我已经通过androidHive教程走了，这样写代码：毕竟这

public class LogUpInActivity extends Activity { 
// sign up statue 
private SharedPreferences StatuSharePreference; 
private SharedPreferences.Editor editor_state; 
public boolean state_signUp, default_state, state_check; 
private Stage mStage; 

// sign up with password 
private View signUpContent; 
private EditText signUp_pasword_editText, signUp_conf_password_editText, signIn_password_editText; 
public static SharedPreferences save_password_sharePreference; 
public static SharedPreferences.Editor editor_password; 
public static String logIn_password = null; 

// sign in with password 
public View signIn_passwordContent; 
public int times_of_signIn = 5; 

// sign in with finger print 
private View signIn_fingerPrintContent; 
private TextView msg_fingerPrint; 
private KeyStore keyStore; 
private Cipher cipher; 
private static final String KEY_NAME = "mohrOmum"; 


// sign in after unlocking 
public boolean sign_in_again; 

private Button cancelBTN, stateBTN; 
private TextView msg_state_conf; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.dialog_container); 

    TextView who = (TextView) findViewById(R.id.who); 
    who.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/mehr.ttf")); 
    TextView signInPassTitle = (TextView) findViewById(R.id.password_description); 
    signInPassTitle.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/nazanin.ttf")); 
    TextView signUpPassTitle = (TextView) findViewById(R.id.signUp_title); 
    signUpPassTitle.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/nazanin.ttf")); 
    StatuSharePreference = getSharedPreferences("signUp", Context.MODE_PRIVATE); 
    editor_state = StatuSharePreference.edit(); 

    signUpContent = findViewById(R.id.signup_content); 
    signUp_pasword_editText = (EditText) findViewById(R.id.pass); 
    signUp_conf_password_editText = (EditText) findViewById(R.id.conf_pass); 
    signIn_password_editText = (EditText) findViewById(R.id.password); 
    msg_state_conf = (TextView) findViewById(R.id.notConfiration_msg); 
    save_password_sharePreference = getSharedPreferences("password", Context.MODE_PRIVATE); 
    editor_password = save_password_sharePreference.edit(); 


    signIn_passwordContent = findViewById(R.id.signIn_password_container); 

    signIn_fingerPrintContent = findViewById(R.id.fingerprint_container); 
    msg_fingerPrint = (TextView) findViewById(R.id.fingerprint_description); 

    // Initializing both Android Keyguard Manager and Fingerprint Manager 
    KeyguardManager keyguardManager = (KeyguardManager) getSystemService(KEYGUARD_SERVICE); 
    FingerprintManager fingerprintManager = (FingerprintManager) getSystemService(FINGERPRINT_SERVICE); 

    // check if sign up is done or not 
    if (!default_state) { 
     state_signUp = false; 
     default_state = true; 
    } else { 
     state_signUp = true; 
    } 

    state_check = StatuSharePreference.getBoolean("signUp", state_signUp); 
    if (!state_check) { 
     // register user password 
     signIn_passwordContent.setVisibility(View.GONE); 
     signUpContent.setVisibility(View.VISIBLE); 
     mStage = Stage.SIGNUP; 
    } else { 
     signUpContent.setVisibility(View.GONE); 
     signIn_passwordContent.setVisibility(View.VISIBLE); 

     // Check whether the device has a Fingerprint sensor. 
     if (!fingerprintManager.isHardwareDetected()) { 
      signIn_fingerPrintContent.setVisibility(View.GONE); 
     } else { 
      signIn_fingerPrintContent.setVisibility(View.VISIBLE); 

      // Checks whether fingerprint permission is set on manifest 
      if (ActivityCompat.checkSelfPermission(this, Manifest.permission.USE_FINGERPRINT) != PackageManager.PERMISSION_GRANTED) { 
       msg_fingerPrint.setVisibility(View.VISIBLE); 
       msg_fingerPrint.setText(R.string.fingerPrint_not_avable); 
       msg_fingerPrint.setTextColor(getResources().getColor(R.color.red_color)); 
      } else { 
       // Check whether at least one fingerprint is registered 
       if (!fingerprintManager.hasEnrolledFingerprints()) { 
        msg_fingerPrint.setVisibility(View.VISIBLE); 
        msg_fingerPrint.setText(R.string.fingerPrint_not_register); 
        msg_fingerPrint.setTextColor(getResources().getColor(R.color.red_color)); 
       } else { 
        // Checks whether lock screen security is enabled or not 
        if (!keyguardManager.isKeyguardSecure()) { 
         msg_fingerPrint.setVisibility(View.VISIBLE); 
         msg_fingerPrint.setText(R.string.fingerPrint_not_register); 
         msg_fingerPrint.setTextColor(getResources().getColor(R.color.red_color)); 
        } else { 
         generateKey(); 


         if (cipherInit()) { 
          FingerprintManager.CryptoObject cryptoObject = new FingerprintManager.CryptoObject(cipher); 
          FingerprintHandler helper = new FingerprintHandler(this); 
          helper.startAuth(fingerprintManager, cryptoObject); 
         } 
        } 
       } 
      } 

     } 
     mStage = Stage.SIGNIN_PASSWORD; 
    } 


    cancelBTN = (Button) findViewById(R.id.cancel_button); 
    cancelBTN.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      finish(); 
     } 
    }); 

    logIn_password = save_password_sharePreference.getString("password", logIn_password); 
    stateBTN = (Button) findViewById(R.id.second_dialog_button); 
    stateBTN.setOnClickListener(new View.OnClickListener() { 
     @RequiresApi(api = Build.VERSION_CODES.M) 
     @Override 
     public void onClick(View view) { 
      switch (mStage) { 
       case SIGNUP: //get user password and register it 
        registerPassword(); 
        break; 
       /*case SIGNIN_FINGERPRINT:// open sign in with password 
        signInWithPassword(); 
        break;*/ 
       case SIGNIN_PASSWORD://checking passsword entry 
        verifyPassword(); 
        break; 
      } 
     } 
    }); 


} // on create 

/** 
* get user password from Edit text , check its lengh , confirm it 
**/ 
public void registerPassword() { 
    String passString = signUp_pasword_editText.getText().toString(); 
    String confPassString = signUp_conf_password_editText.getText().toString(); 

    if ((passString.equals(confPassString)) && 
      (passString.length() == 12) && 
      (confPassString.length() == 12)) { 
     logIn_password = passString; 
     editor_password.putString("password", logIn_password).commit(); 
     Toast.makeText(this, logIn_password, Toast.LENGTH_LONG).show(); 
     msg_state_conf.setVisibility(View.VISIBLE); 
     msg_state_conf.setText(R.string.msg_conf); 
     msg_state_conf.setTextColor(getResources().getColor(R.color.green_color)); 

     editor_state.putBoolean("signUp", true).commit(); 
     //state_signUp = true; 

     //mina! ***checking fingerPrint sensor*** 
     /* + : finger primt authorization 
     ** - : sign in with password 
     */ 
     mStage = Stage.SIGNIN_PASSWORD; 
     signUpContent.setVisibility(View.GONE); 
     signIn_passwordContent.setVisibility(View.VISIBLE); 
    } else { 
     msg_state_conf.setVisibility(View.VISIBLE); 
     msg_state_conf.setText(R.string.msg_not_conf); 
     msg_state_conf.setTextColor(getResources().getColor(R.color.red_color)); 
     //not confirm 
     editor_state.putBoolean("signUp", false).commit(); 

    } 
} 


/** 
* Checks whether the current entered password is correct, and dismisses the the dialog and 
* let's the activity know about the result. 
*/ 
private void verifyPassword() { 
    logIn_password = save_password_sharePreference.getString("signUp", logIn_password); 
    Toast.makeText(this, logIn_password, Toast.LENGTH_LONG).show(); 
    if (signIn_password_editText.getText().toString().equals(logIn_password)) { 
     startActivity(new Intent(LogUpInActivity.this, MainActivity.class)); 
     LogUpInActivity.this.finish(); 
    } else { 
     --times_of_signIn; 
     Toast.makeText(this, times_of_signIn + "تعداد ورود باقیمانده:", Toast.LENGTH_LONG).show(); 
     signIn_password_editText.setText(null); 

     if (times_of_signIn == 0) { 
      Toast.makeText(this, R.string.restart_app, Toast.LENGTH_LONG).show(); 
      MainActivity.sqlDB.delete(DataBaseClass.BANK_TABLE_NAME, null, null); 
      logIn_password = null; 
      editor_password.putString("password", logIn_password).commit(); 
      state_signUp = false; 
      editor_state.putBoolean("signUp", state_signUp).commit(); 
      signIn_passwordContent.setVisibility(View.GONE); 
      signUpContent.setVisibility(View.VISIBLE); 
      mStage = Stage.SIGNUP; 
     } 
    } 

} 



/* 
sign in with finger print 
*/ 
@TargetApi(Build.VERSION_CODES.M) 
protected void generateKey() { 
    try { 
     keyStore = KeyStore.getInstance("AndroidKeyStore"); 
    } catch (Exception e) { 
     e.printStackTrace(); 
    } 


    KeyGenerator keyGenerator; 
    try { 
     keyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, "AndroidKeyStore"); 
     //startActivity(new Intent(LogUpInActivity.this,MainActivity.class)); 
    } catch (NoSuchAlgorithmException | NoSuchProviderException e) { 
     throw new RuntimeException("Failed to get KeyGenerator instance", e); 
    } 


    try { 
     keyStore.load(null); 
     keyGenerator.init(new 
       KeyGenParameterSpec.Builder(KEY_NAME, 
       KeyProperties.PURPOSE_ENCRYPT | 
         KeyProperties.PURPOSE_DECRYPT) 
       .setBlockModes(KeyProperties.BLOCK_MODE_CBC) 
       .setUserAuthenticationRequired(true) 
       .setEncryptionPaddings(
         KeyProperties.ENCRYPTION_PADDING_PKCS7) 
       .build()); 
     keyGenerator.generateKey(); 
    } catch (NoSuchAlgorithmException | 
      InvalidAlgorithmParameterException 
      | IOException e) { 
     throw new RuntimeException(e); 
    } catch (java.security.cert.CertificateException e) { 
     e.printStackTrace(); 
    } 
} 


@TargetApi(Build.VERSION_CODES.M) 
public boolean cipherInit() { 
    try { 
     cipher = Cipher.getInstance(KeyProperties.KEY_ALGORITHM_AES + "/" + KeyProperties.BLOCK_MODE_CBC + "/" + KeyProperties.ENCRYPTION_PADDING_PKCS7); 
    } catch (NoSuchAlgorithmException | NoSuchPaddingException e) { 
     throw new RuntimeException("Failed to get Cipher", e); 
    } 

    try { 
     keyStore.load(null); 
     SecretKey key = (SecretKey) keyStore.getKey(KEY_NAME, null); 
     cipher.init(Cipher.ENCRYPT_MODE, key); 
     return true; 

    } catch (IOException e) { 
     e.printStackTrace(); 
    } catch (java.security.cert.CertificateException e) { 
     e.printStackTrace(); 
    } catch (NoSuchAlgorithmException e) { 
     e.printStackTrace(); 
    } catch (UnrecoverableKeyException e) { 
     e.printStackTrace(); 
    } catch (InvalidKeyException e) { 
     e.printStackTrace(); 
    } catch (KeyStoreException e) { 
     e.printStackTrace(); 
    } 
    return true; 
} 


public void onFinish(){ 
    editor_password.putString("password",logIn_password).commit(); 

} 




/** 
* Enumeration to indicate which authentication method the user is trying to authenticate with. 
*/ 
public enum Stage { 
    SIGNUP, 
    SIGNIN_FINGERPRINT, 
    SIGNIN_PASSWORD 
}

现在我有以下问题：

我怎样才能指纹后置意向授权？
我怎么能有时间限制的指纹授权（如verifyPassword()法）

请指导。

来源

2017-05-29 Mina Dahesh

在FingerPrintHamdler类中，您可以找到onAuthenticationSucceeded()方法。所以写下这段代码：

public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) { 
    this.update("Fingerprint Authentication succeeded.", true); 
    Intent intent=new Intent(context.getApplicationContext(), MainActivity.class); 
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); 
    context.startActivity(intent); 
}

来源

2017-06-03 14:06:27

如何在android中创建指纹授权？

回答

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