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Harald Hoyer 2014-07-31 07:35:47 +02:00
commit 4fd4949813
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6
.gitignore vendored Normal file
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.gradle
/local.properties
/.idea/workspace.xml
/.idea/libraries
.DS_Store
/build

1
.idea/.name Normal file
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SecretShare

23
.idea/compiler.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="CompilerConfiguration">
<option name="DEFAULT_COMPILER" value="Javac" />
<resourceExtensions />
<wildcardResourcePatterns>
<entry name="!?*.java" />
<entry name="!?*.form" />
<entry name="!?*.class" />
<entry name="!?*.groovy" />
<entry name="!?*.scala" />
<entry name="!?*.flex" />
<entry name="!?*.kt" />
<entry name="!?*.clj" />
</wildcardResourcePatterns>
<annotationProcessing>
<profile default="true" name="Default" enabled="false">
<processorPath useClasspath="true" />
</profile>
</annotationProcessing>
</component>
</project>

3
.idea/copyright/profiles_settings.xml Normal file
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<component name="CopyrightManager">
<settings default="" />
</component>

5
.idea/encodings.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="Encoding" useUTFGuessing="true" native2AsciiForPropertiesFiles="false" />
</project>

18
.idea/gradle.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="GradleSettings">
<option name="linkedExternalProjectsSettings">
<GradleProjectSettings>
<option name="distributionType" value="DEFAULT_WRAPPED" />
<option name="externalProjectPath" value="$PROJECT_DIR$" />
<option name="modules">
<set>
<option value="$PROJECT_DIR$" />
<option value="$PROJECT_DIR$/app" />
</set>
</option>
</GradleProjectSettings>
</option>
</component>
</project>

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.idea/misc.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="EntryPointsManager">
<entry_points version="2.0" />
</component>
<component name="ProjectRootManager" version="2" languageLevel="JDK_1_6" assert-keyword="true" jdk-15="true" project-jdk-name="JDK" project-jdk-type="JavaSDK">
<output url="file://$PROJECT_DIR$/build/classes" />
</component>
<component name="masterDetails">
<states>
<state key="GlobalLibrariesConfigurable.UI">
<settings>
<splitter-proportions>
<option name="proportions">
<list>
<option value="0.2" />
</list>
</option>
</splitter-proportions>
</settings>
</state>
<state key="JdkListConfigurable.UI">
<settings>
<last-edited>Android API 19 Platform</last-edited>
<splitter-proportions>
<option name="proportions">
<list>
<option value="0.2" />
</list>
</option>
</splitter-proportions>
</settings>
</state>
<state key="ProjectJDKs.UI">
<settings>
<last-edited>Android API 10 Platform</last-edited>
<splitter-proportions>
<option name="proportions">
<list>
<option value="0.2" />
</list>
</option>
</splitter-proportions>
</settings>
</state>
<state key="ProjectLibrariesConfigurable.UI">
<settings>
<splitter-proportions>
<option name="proportions">
<list>
<option value="0.2" />
</list>
</option>
</splitter-proportions>
</settings>
</state>
</states>
</component>
</project>

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.idea/modules.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/SecretShare.iml" filepath="$PROJECT_DIR$/SecretShare.iml" />
<module fileurl="file://$PROJECT_DIR$/app/app.iml" filepath="$PROJECT_DIR$/app/app.iml" />
</modules>
</component>
</project>

5
.idea/scopes/scope_settings.xml Normal file
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<component name="DependencyValidationManager">
<state>
<option name="SKIP_IMPORT_STATEMENTS" value="false" />
</state>
</component>

7
.idea/vcs.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="" vcs="Git" />
</component>
</project>

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SecretShare.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
<component name="FacetManager">
<facet type="java-gradle" name="Java-Gradle">
<configuration>
<option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/build" />
</configuration>
</facet>
</component>
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://$MODULE_DIR$">
<excludeFolder url="file://$MODULE_DIR$/.gradle" />
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

1
app/.gitignore vendored Normal file
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/build

69
app/app.iml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$/.." external.system.id="GRADLE" external.system.module.group="SecretShare" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
<component name="FacetManager">
<facet type="android-gradle" name="Android-Gradle">
<configuration>
<option name="GRADLE_PROJECT_PATH" value=":app" />
</configuration>
</facet>
<facet type="android" name="Android">
<configuration>
<option name="SELECTED_BUILD_VARIANT" value="debug" />
<option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
<option name="COMPILE_JAVA_TASK_NAME" value="compileDebugJava" />
<option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugTest" />
<option name="SOURCE_GEN_TASK_NAME" value="generateDebugSources" />
<option name="ALLOW_USER_CONFIGURATION" value="false" />
<option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
<option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
<option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/src/main/res" />
<option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
</configuration>
</facet>
</component>
<component name="NewModuleRootManager" inherit-compiler-output="false">
<output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
<exclude-output />
<content url="file://$MODULE_DIR$">
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/debug" isTestSource="false" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/debug" isTestSource="false" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/test/debug" isTestSource="true" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/test/debug" isTestSource="true" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/test/debug" isTestSource="true" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/test/debug" isTestSource="true" generated="true" />
<sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/test/debug" type="java-test-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/aidl" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/assets" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/java" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/jni" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/debug/rs" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/res" type="java-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/main/aidl" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/assets" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/jni" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/main/rs" isTestSource="false" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/res" type="java-test-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/resources" type="java-test-resource" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/aidl" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/assets" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/java" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/jni" isTestSource="true" />
<sourceFolder url="file://$MODULE_DIR$/src/androidTest/rs" isTestSource="true" />
<excludeFolder url="file://$MODULE_DIR$/build/intermediates" />
<excludeFolder url="file://$MODULE_DIR$/build/outputs" />
</content>
<orderEntry type="jdk" jdkName="Android API 20 Platform" jdkType="Android SDK" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" exported="" name="core-3.1.0" level="project" />
<orderEntry type="library" exported="" name="miglayout-3.7.4" level="project" />
<orderEntry type="library" exported="" name="secretshare-1.4.1" level="project" />
</component>
</module>

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app/build.gradle Normal file
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apply plugin: 'com.android.application'
apply plugin: 'maven'
dependencies {
compile 'com.tiemens:secretshare:1.4.1'
compile 'com.google.zxing:core:3.1.0'
}
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.1'
}
}
allprojects {
repositories {
mavenCentral()
}
}
android {
compileSdkVersion 20
buildToolsVersion "20.0.0"
defaultConfig {
applicationId "org.surfsite.android.secretshare"
minSdkVersion 15
targetSdkVersion 20
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
}

17
app/proguard-rules.pro vendored Normal file
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# Add project specific ProGuard rules here.
# By default, the flags in this file are appended to flags specified
# in /Applications/Android Studio.app/sdk/tools/proguard/proguard-android.txt
# You can edit the include path and order by changing the proguardFiles
# directive in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# Add any project specific keep options here:
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}

13
app/src/androidTest/java/org/surfsite/android/secretshare/ApplicationTest.java Normal file
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package org.surfsite.android.secretshare;
import android.app.Application;
import android.test.ApplicationTestCase;
/**
* <a href="http://d.android.com/tools/testing/testing_android.html">Testing Fundamentals</a>
*/
public class ApplicationTest extends ApplicationTestCase<Application> {
public ApplicationTest() {
super(Application.class);
}
}

22
app/src/main/AndroidManifest.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<manifest
package="org.surfsite.android.secretshare"
xmlns:android="http://schemas.android.com/apk/res/android">
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>

5
app/src/main/java/org/surfsite/android/secretshare/FragmentSupport.java Normal file
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package org.surfsite.android.secretshare;
public interface FragmentSupport {
boolean mayBackPress();
}

288
app/src/main/java/org/surfsite/android/secretshare/GenerateFragment.java Normal file
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package org.surfsite.android.secretshare;
import android.app.Activity;
import android.app.Fragment;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Base64;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.tiemens.secretshare.engine.SecretShare;
import com.tiemens.secretshare.engine.SecretShare.ShareInfo;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.util.Hashtable;
import java.util.List;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link GenerateFragment.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link GenerateFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class GenerateFragment extends Fragment implements FragmentSupport {
private static final String ARG_N = "n";
private static final String ARG_K = "k";
private static final String ARG_CLEARTEXT = "cleartext";
private final static QRCodeWriter sQRCodeWriter = new QRCodeWriter();
private int n;
private int k;
private String cleartext;
private GenerateSharesTask generateSharesTask = null;
private OnFragmentInteractionListener mListener;
public GenerateFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param n number of secrets.
* @param k number of needed secrets.
* @param cleartext text to split.
* @return A new instance of fragment GenerateFragment.
*/
public static GenerateFragment newInstance(int n, int k, String cleartext) {
GenerateFragment fragment = new GenerateFragment();
Bundle args = new Bundle();
args.putInt(ARG_K, k);
args.putInt(ARG_N, n);
args.putString(ARG_CLEARTEXT, cleartext);
fragment.setArguments(args);
return fragment;
}
static BigInteger stringToBigInteger(String in) {
BigInteger bigint;
try {
bigint = new BigInteger(in.getBytes("UTF-8"));
} catch (UnsupportedEncodingException ex) {
ex.printStackTrace();
bigint = BigInteger.ZERO;
}
return bigint;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
n = getArguments().getInt(ARG_N);
k = getArguments().getInt(ARG_K);
cleartext = getArguments().getString(ARG_CLEARTEXT);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_generate, container, false);
return rootView;
}
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (OnFragmentInteractionListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
@Override
public void onStart() {
super.onStart();
if (generateSharesTask != null)
generateSharesTask.cancel(true);
TextView tv = (TextView) getActivity().findViewById(R.id.generate_status);
generateSharesTask = new GenerateSharesTask(tv, n, k, cleartext);
generateSharesTask.execute();
}
@Override
public void onStop() {
if (generateSharesTask != null)
generateSharesTask.cancel(false);
generateSharesTask = null;
super.onStop();
}
public boolean mayBackPress() {
if (generateSharesTask != null) {
return generateSharesTask.isFinished();
// generateSharesTask.cancel(false);
// generateSharesTask = null;
}
return true;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
public void onFragmentInteraction(Uri uri);
}
private class GenerateSharesTask extends AsyncTask<Void, Void, Void> {
private TextView tv;
private List<SecretShare.ShareInfo> pieces;
private int n;
private int k;
private String cleartext;
private SecretShare.PublicInfo publicInfo;
private boolean finished = false;
public GenerateSharesTask(TextView tv, int n, int k, String cleartext) {
this.tv = tv;
this.n = n;
this.k = k;
this.cleartext = cleartext;
this.tv.setText("Generating shared secrets for " + cleartext.length()
+ " chars. Please Wait. This can take a long time.");
}
private Bitmap createBitmap(byte[] content, final int size) {
final Hashtable<EncodeHintType, Object> hints =
new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
hints.put(EncodeHintType.CHARACTER_SET, "ISO-8859-1");
BitMatrix result;
String data;
try {
data = new String(content, "ISO-8859-1");
} catch (Exception ex) {
ex.printStackTrace();
data = new String(content);
}
try {
result = sQRCodeWriter.encode(data,
BarcodeFormat.QR_CODE,
size,
size,
hints);
} catch (WriterException ex) {
return null;
}
final int width = result.getWidth();
final int height = result.getHeight();
final int[] pixels = new int[width * height];
for (int y = 0; y < height; y++) {
final int offset = y * width;
for (int x = 0; x < width; x++) {
pixels[offset + x] =
result.get(x, y) ? Color.BLACK : Color.TRANSPARENT;
}
}
final Bitmap bitmap =
Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
public boolean isFinished() {
return finished;
}
@Override
protected Void doInBackground(Void... params) {
final BigInteger secretInteger = stringToBigInteger(cleartext);
final BigInteger modulus;
modulus = SecretShare.createAppropriateModulusForSecret(secretInteger);
publicInfo = new SecretShare.PublicInfo(n,
k,
modulus,
null);
final SecretShare.SplitSecretOutput splitSecretOutput = new SecretShare(publicInfo)
.split(secretInteger);
pieces = splitSecretOutput.getShareInfos();
return null;
}
@Override
protected void onPostExecute(Void nothing) {
super.onPostExecute(nothing);
String[] out = new String[pieces.size()];
tv.setText("");
for (int i = 0; i < out.length; i++) {
final ShareInfo piece = pieces.get(i);
byte[] bmodulus = publicInfo.getPrimeModulus().toByteArray();
byte[] bshare = piece.getShare().toByteArray();
int blen = 4 + 4 + 4 + 4 + 4 + bmodulus.length + bshare.length;
ByteBuffer bencoded = ByteBuffer.allocate(blen);
bencoded.putInt(n).putInt(k).putInt(piece.getX());
bencoded.putInt(bmodulus.length).put(bmodulus);
bencoded.putInt(bshare.length).put(bshare);
tv.append("Length: " + blen + "\n");
out[i] = n + ":" + k + ":" + piece.getX() + ":"
+ publicInfo.getPrimeModulus() + ":" + piece.getShare();
tv.append("OutLen: " + out[i].length() + "\n");
tv.append(out[i] + "\n");
tv.append(bencoded + "\n0x");
for (byte b : bencoded.array()) {
tv.append(String.format("%x", b));
}
tv.append("\n");
String bencoded64 = Base64.encodeToString(bencoded.array(), Base64.DEFAULT);
tv.append("B64Len: " + bencoded64.length() + "\n");
tv.append(bencoded64 + "\n");
tv.append(bencoded + "\n\n");
}
this.finished = true;
}
}
}

156
app/src/main/java/org/surfsite/android/secretshare/InputFragment.java Normal file
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package org.surfsite.android.secretshare;
import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
/**
* A simple {@link Fragment} subclass.
* Activities that contain this fragment must implement the
* {@link org.surfsite.android.secretshare.InputFragment.OnInputFragmentInteractionListener} interface
* to handle interaction events.
* Use the {@link InputFragment#newInstance} factory method to
* create an instance of this fragment.
*/
public class InputFragment extends Fragment {
private static final String ARG_N = "n";
private static final String ARG_K = "k";
private static final String ARG_CLEARTEXT = "cleartext";
private OnInputFragmentInteractionListener mListener;
private int n = 3;
private int k = 2;
private String cleartext;
public InputFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @return A new instance of fragment InputFragment.
*/
public static InputFragment newInstance(int n, int k, String cleartext) {
InputFragment fragment = new InputFragment();
Bundle args = new Bundle();
args.putInt(ARG_K, k);
args.putInt(ARG_N, n);
args.putString(ARG_CLEARTEXT, cleartext);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
n = getArguments().getInt(ARG_N);
k = getArguments().getInt(ARG_K);
cleartext = getArguments().getString(ARG_CLEARTEXT);
}
}
@Override
public void onSaveInstanceState(Bundle args) {
args.putInt(ARG_K, k);
args.putInt(ARG_N, n);
args.putString(ARG_CLEARTEXT, cleartext);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_input, container, false);
final Button generateButton = (Button) rootView.findViewById(R.id.generate_button);
assert (generateButton != null);
generateButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onGenerateButtonPressed();
}
});
final EditText clearEditText = (EditText) rootView.findViewById(R.id.clearEditText);
clearEditText.setText(cleartext);
//set on focus to force keyboard
clearEditText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus) {
//open keyboard
((InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE)).showSoftInput(v,
InputMethodManager.SHOW_FORCED);
} else {
//close keyboard
((InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(
v.getWindowToken(), 0);
}
}
});
//Set on click listener to clear focus
clearEditText.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View clickedView) {
clickedView.clearFocus();
clickedView.requestFocus();
}
});
return rootView;
}
public void onGenerateButtonPressed() {
if (mListener != null) {
final EditText clearEditText = (EditText) getActivity().findViewById(R.id.clearEditText);
cleartext = clearEditText.getText().toString();
if (cleartext.isEmpty())
return;
mListener.generateSecret(n, k, cleartext);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (OnInputFragmentInteractionListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnInputFragmentInteractionListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p/>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnInputFragmentInteractionListener {
public void generateSecret(int n, int k, String cleartext);
}
}

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package org.surfsite.android.secretshare;
/**
* Copyright 2013 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.Provider;
import java.security.SecureRandomSpi;
import java.security.Security;
/**
* A SecureRandom implementation that is able to override the standard JVM provided implementation, and which simply
* serves random numbers by reading /dev/urandom. That is, it delegates to the kernel on UNIX systems and is unusable on
* other platforms. Attempts to manually set the seed are ignored. There is no difference between seed bytes and
* non-seed bytes, they are all from the same source.
*/
public class LinuxSecureRandom extends SecureRandomSpi {
private static final FileInputStream urandom;
private final DataInputStream dis;
public LinuxSecureRandom() {
// DataInputStream is not thread safe, so each random object has its own.
dis = new DataInputStream(urandom);
}
@Override
protected void engineSetSeed(byte[] bytes) {
// Ignore.
}
@Override
protected void engineNextBytes(byte[] bytes) {
try {
dis.readFully(bytes); // This will block until all the bytes can be read.
} catch (IOException e) {
throw new RuntimeException(e); // Fatal error. Do not attempt to recover from this.
}
}
@Override
protected byte[] engineGenerateSeed(int i) {
byte[] bits = new byte[i];
engineNextBytes(bits);
return bits;
}
private static class LinuxSecureRandomProvider extends Provider {
public LinuxSecureRandomProvider() {
super("LinuxSecureRandom", 1.0, "A Linux specific random number provider that uses /dev/urandom");
put("SecureRandom.LinuxSecureRandom", LinuxSecureRandom.class.getName());
}
}
static {
try {
File file = new File("/dev/urandom");
if (file.exists()) {
// This stream is deliberately leaked.
urandom = new FileInputStream(file);
// Now override the default SecureRandom implementation with this one.
Security.insertProviderAt(new LinuxSecureRandomProvider(), 1);
} else {
urandom = null;
}
} catch (FileNotFoundException e) {
// Should never happen.
throw new RuntimeException(e);
}
}
}

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package org.surfsite.android.secretshare;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends Activity
implements
GenerateFragment.OnFragmentInteractionListener,
InputFragment.OnInputFragmentInteractionListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
new LinuxSecureRandom(); // init proper random number generator
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.add(R.id.container, new InputFragment());
//transaction.addToBackStack(null);
transaction.commit();
}
// QRCODE
// IntentIntegrator test;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public void generateSecret(int n, int k, String cleartext) {
Fragment generateFragment = new GenerateFragment().newInstance(n, k, cleartext);
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.container, generateFragment, "GENERATEFRAGMENT");
transaction.addToBackStack(null);
transaction.commit();
}
public void onFragmentInteraction(Uri uri) {
}
@Override
public void onBackPressed() {
try {
final FragmentSupport fragment = (FragmentSupport) getFragmentManager().findFragmentByTag("GENERATEFRAGMENT");
if (fragment == null || fragment.mayBackPress()) {
super.onBackPressed();
}
} catch (ClassCastException e) {
super.onBackPressed();
}
}
}

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<FrameLayout
android:id="@+id/container"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
tools:ignore="MergeRootFrame"/>

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app/src/main/res/layout/fragment_generate.xml Normal file
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<FrameLayout
android:id="@+id/status"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context="org.surfsite.android.secretshare.GenerateFragment">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
android:scrollbars="vertical">
<TextView
android:id="@+id/generate_status"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="@string/hello_blank_fragment"
/>
</ScrollView>
</FrameLayout>

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app/src/main/res/layout/fragment_input.xml Normal file
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<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="org.surfsite.android.secretshare.InputFragment">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:padding="8dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
android:padding="8dp"
>
</LinearLayout>
<Button
android:id="@+id/generate_button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/string_generate_secrets"/>
<EditText
android:id="@+id/clearEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:ems="10"
android:focusable="true"
android:hint="@string/string_clear_text_secret"
android:inputType="textMultiLine"
android:maxLength="500"
android:textIsSelectable="true"
/>
</LinearLayout>
</FrameLayout>

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<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:context=".MainActivity">
<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:showAsAction="never"
android:title="@string/action_settings"/>
</menu>

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<resources>
</resources>

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<resources>
</resources>

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app/src/main/res/values-w820dp/dimens.xml Normal file
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<resources>
<!-- Example customization of dimensions originally defined in res/values/dimens.xml
(such as screen margins) for screens with more than 820dp of available width. This
would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively). -->
<dimen name="activity_horizontal_margin">64dp</dimen>
</resources>

5
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<resources>
<!-- Default screen margins, per the Android Design guidelines. -->
<dimen name="activity_horizontal_margin">16dp</dimen>
<dimen name="activity_vertical_margin">16dp</dimen>
</resources>

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<resources>
</resources>

12
app/src/main/res/values/strings.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">SecretShare</string>
<string name="hello_world">Hello world!</string>
<string name="action_settings">Settings</string>
<string name="string_clear_text_secret">Clear text secret</string>
<string name="string_generate_secrets">Generate Secrets</string>
<string name="string_encrypted_secrets">Encrypted secrets</string>
<string name="hello_blank_fragment">Hello blank fragment</string>
</resources>

8
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<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
<!-- Customize your theme here. -->
</style>
</resources>

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// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.+'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}

18
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# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Settings specified in this file will override any Gradle settings
# configured through the IDE.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
# Default value: -Xmx10248m -XX:MaxPermSize=256m
# org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true

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#Wed Apr 10 15:27:10 PDT 2013
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=http\://services.gradle.org/distributions/gradle-1.12-all.zip

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#!/usr/bin/env bash
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn ( ) {
echo "$*"
}
die ( ) {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
esac
# For Cygwin, ensure paths are in UNIX format before anything is touched.
if $cygwin ; then
[ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
fi
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >&-
APP_HOME="`pwd -P`"
cd "$SAVED" >&-
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=$((i+1))
done
case $i in
(0) set -- ;;
(1) set -- "$args0" ;;
(2) set -- "$args0" "$args1" ;;
(3) set -- "$args0" "$args1" "$args2" ;;
(4) set -- "$args0" "$args1" "$args2" "$args3" ;;
(5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
(6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
(7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
(8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
(9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
function splitJvmOpts() {
JVM_OPTS=("$@")
}
eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"

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@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windowz variants
if not "%OS%" == "Windows_NT" goto win9xME_args
if "%@eval[2+2]" == "4" goto 4NT_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
goto execute
:4NT_args
@rem Get arguments from the 4NT Shell from JP Software
set CMD_LINE_ARGS=%$
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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include ':app'