mirror of https://github.com/beemdevelopment/Aegis
Add an activity to decrypt the database
Alexander Bakker
8 years ago
parent
53e86db187
commit
722ea50b68
@ -0,0 +1,79 @@
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package me.impy.aegis;
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import android.content.Intent;
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import android.support.v7.app.AppCompatActivity;
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import android.os.Bundle;
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import android.text.Editable;
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import android.view.View;
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import android.widget.Button;
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import android.widget.EditText;
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import java.lang.reflect.UndeclaredThrowableException;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import me.impy.aegis.crypto.CryptoUtils;
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import me.impy.aegis.crypto.MasterKey;
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import me.impy.aegis.crypto.slots.PasswordSlot;
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import me.impy.aegis.crypto.slots.Slot;
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import me.impy.aegis.crypto.slots.SlotCollection;
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public class AuthActivity extends AppCompatActivity {
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public static final int RESULT_OK = 0;
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public static final int RESULT_EXCEPTION = 1;
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private EditText textPassword;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_auth);
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textPassword = (EditText) findViewById(R.id.text_password);
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Intent intent = getIntent();
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final SlotCollection slots = (SlotCollection) intent.getSerializableExtra("slots");
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Button button = (Button) findViewById(R.id.button_decrypt);
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button.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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MasterKey masterKey = null;
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try {
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if (slots.has(PasswordSlot.class)) {
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PasswordSlot slot = slots.find(PasswordSlot.class);
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char[] password = getPassword(true);
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SecretKey key = slot.deriveKey(password);
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CryptoUtils.zero(password);
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Cipher cipher = Slot.createCipher(key, Cipher.DECRYPT_MODE);
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masterKey = MasterKey.decryptSlot(slot, cipher);
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}
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} catch (Exception e) {
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// TODO: feedback
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throw new UndeclaredThrowableException(e);
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}
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// send the master key back to the main activity
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Intent result = new Intent();
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result.putExtra("key", masterKey);
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setResult(RESULT_OK, result);
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finish();
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}
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});
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}
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private char[] getPassword(boolean clear) {
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char[] password = getEditTextChars(textPassword);
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if (clear) {
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textPassword.getText().clear();
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}
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return password;
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}
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private static char[] getEditTextChars(EditText text) {
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Editable editable = text.getText();
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char[] chars = new char[editable.length()];
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editable.getChars(0, editable.length(), chars, 0);
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return chars;
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}
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}
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@ -0,0 +1,45 @@
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<?xml version="1.0" encoding="utf-8"?>
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<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:fitsSystemWindows="true"
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tools:context="me.impy.aegis.AuthActivity">
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<LinearLayout
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android:orientation="vertical"
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android:layout_width="344dp"
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android:layout_height="495dp"
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android:layout_margin="32dp"
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tools:layout_editor_absoluteY="8dp"
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tools:layout_editor_absoluteX="8dp">
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<TextView
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android:text="@string/authentication"
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:textSize="24sp"
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android:textColor="@color/primary_text_inverted"
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android:id="@+id/textView2" />
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<LinearLayout
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android:orientation="vertical"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:layout_marginTop="12dp">
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<TextView
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:id="@+id/textView4"
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android:text="@string/authentication_enter_password"/>
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<EditText
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android:layout_width="match_parent"
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android:layout_height="wrap_content"
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android:inputType="textPassword"
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android:id="@+id/text_password"/>
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<Button
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android:id="@+id/button_decrypt"
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android:layout_width="125dp"
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android:layout_height="wrap_content"
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android:text="Decrypt" />
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</LinearLayout>
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</LinearLayout>
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</android.support.design.widget.CoordinatorLayout>
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