affirmation -> linked identity

9 files changed, 1698 insertions, 0 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep1Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep1Fragment.java
new file mode 100644
index 000000000..ba57ace4b
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep1Fragment.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Patterns;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.resources.DnsResource;
+
+public class LinkedIdCreateDnsStep1Fragment extends Fragment {
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditDns;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateDnsStep1Fragment newInstance() {
+        LinkedIdCreateDnsStep1Fragment frag = new LinkedIdCreateDnsStep1Fragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_dns_fragment_step1, container, false);
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                String uri = mEditDns.getText().toString();
+
+                if (!checkUri(uri)) {
+                    mEditDns.setError("Please enter a valid domain name!");
+                    return;
+                }
+
+                String proofNonce = LinkedIdentity.generateNonce();
+                String proofText = DnsResource.generateText(getActivity(),
+                        mLinkedIdWizard.mFingerprint, proofNonce);
+
+                LinkedIdCreateDnsStep2Fragment frag =
+                        LinkedIdCreateDnsStep2Fragment.newInstance(uri, proofNonce, proofText);
+
+                mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+
+            }
+        });
+
+        view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        mEditDns = (EditText) view.findViewById(R.id.linked_create_dns_domain);
+
+        mEditDns.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+                String uri = editable.toString();
+                if (uri.length() > 0) {
+                    if (checkUri(uri)) {
+                        mEditDns.setCompoundDrawablesWithIntrinsicBounds(0, 0,
+                                R.drawable.uid_mail_ok, 0);
+                    } else {
+                        mEditDns.setCompoundDrawablesWithIntrinsicBounds(0, 0,
+                                R.drawable.uid_mail_bad, 0);
+                    }
+                } else {
+                    // remove drawable if email is empty
+                    mEditDns.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
+                }
+            }
+        });
+
+        mEditDns.setText("mugenguild.com");
+
+        return view;
+    }
+
+    private static boolean checkUri(String uri) {
+        return Patterns.DOMAIN_NAME.matcher(uri).matches();
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep2Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep2Fragment.java
new file mode 100644
index 000000000..ff8d03dd4
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateDnsStep2Fragment.java
@@ -0,0 +1,360 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.graphics.PorterDuff;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.operations.results.LinkedVerifyResult;
+import org.sufficientlysecure.keychain.operations.results.OperationResult;
+import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.resources.DnsResource;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
+import org.sufficientlysecure.keychain.ui.PassphraseDialogActivity;
+import org.sufficientlysecure.keychain.ui.util.Notify;
+import org.sufficientlysecure.keychain.ui.util.Notify.Style;
+import org.sufficientlysecure.keychain.util.FileHelper;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.PrintWriter;
+
+public class LinkedIdCreateDnsStep2Fragment extends Fragment {
+
+    private static final int REQUEST_CODE_OUTPUT = 0x00007007;
+    private static final int REQUEST_CODE_PASSPHRASE = 0x00007008;
+
+    public static final String DOMAIN = "domain", NONCE = "nonce", TEXT = "text";
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditUri;
+    ImageView mVerifyImage;
+    View mVerifyProgress;
+    TextView mVerifyStatus;
+
+    String mResourceDomain;
+    String mResourceNonce, mResourceString;
+
+    // This is a resource, set AFTER it has been verified
+    DnsResource mVerifiedResource = null;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateDnsStep2Fragment newInstance
+            (String uri, String proofNonce, String proofText) {
+
+        LinkedIdCreateDnsStep2Fragment frag = new LinkedIdCreateDnsStep2Fragment();
+
+        Bundle args = new Bundle();
+        args.putString(DOMAIN, uri);
+        args.putString(NONCE, proofNonce);
+        args.putString(TEXT, proofText);
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_dns_fragment_step2, container, false);
+
+        mResourceDomain = getArguments().getString(DOMAIN);
+        mResourceNonce = getArguments().getString(NONCE);
+        mResourceString = getArguments().getString(TEXT);
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startCertify();
+            }
+        });
+
+        view.findViewById(R.id.back_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        mVerifyImage = (ImageView) view.findViewById(R.id.verify_image);
+        mVerifyProgress = view.findViewById(R.id.verify_progress);
+        mVerifyStatus = (TextView) view.findViewById(R.id.verify_status);
+
+        view.findViewById(R.id.button_send).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofSend();
+            }
+        });
+
+        view.findViewById(R.id.button_save).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofSave();
+            }
+        });
+
+        view.findViewById(R.id.button_verify).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofVerify();
+            }
+        });
+
+        mEditUri = (EditText) view.findViewById(R.id.linked_create_dns_text);
+        mEditUri.setText(mResourceString);
+
+        setVerifyProgress(false, null);
+        mVerifyStatus.setText(R.string.linked_verify_pending);
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+    }
+
+    public void setVerifyProgress(boolean on, Boolean success) {
+        mVerifyProgress.setVisibility(on ? View.VISIBLE : View.GONE);
+        mVerifyImage.setVisibility(on ? View.GONE : View.VISIBLE);
+        if (success == null) {
+            mVerifyStatus.setText(R.string.linked_verifying);
+            mVerifyImage.setImageResource(R.drawable.status_signature_unverified_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.tertiary_text_light),
+                    PorterDuff.Mode.SRC_IN);
+        } else if (success) {
+            mVerifyStatus.setText(R.string.linked_verify_success);
+            mVerifyImage.setImageResource(R.drawable.status_signature_verified_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.android_green_dark),
+                    PorterDuff.Mode.SRC_IN);
+        } else {
+            mVerifyStatus.setText(R.string.linked_verify_error);
+            mVerifyImage.setImageResource(R.drawable.status_signature_unknown_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.android_red_dark),
+                    PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    private void proofSend () {
+        Intent sendIntent = new Intent();
+        sendIntent.setAction(Intent.ACTION_SEND);
+        sendIntent.putExtra(Intent.EXTRA_TEXT, mResourceString);
+        sendIntent.setType("text/plain");
+        startActivity(sendIntent);
+    }
+
+    private void proofSave () {
+        String state = Environment.getExternalStorageState();
+        if (!Environment.MEDIA_MOUNTED.equals(state)) {
+            Notify.showNotify(getActivity(), "External storage not available!", Style.ERROR);
+            return;
+        }
+
+        String targetName = "pgpkey.txt";
+
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+            File targetFile = new File(Constants.Path.APP_DIR, targetName);
+            FileHelper.saveFile(this, getString(R.string.title_decrypt_to_file),
+                    getString(R.string.specify_file_to_decrypt_to), targetFile, REQUEST_CODE_OUTPUT);
+        } else {
+            FileHelper.saveDocument(this, "text/plain", targetName, REQUEST_CODE_OUTPUT);
+        }
+    }
+
+    private void saveFile(Uri uri) {
+        try {
+            PrintWriter out =
+                    new PrintWriter(getActivity().getContentResolver().openOutputStream(uri));
+            out.print(mResourceString);
+            if (out.checkError()) {
+                Notify.showNotify(getActivity(), "Error writing file!", Style.ERROR);
+            }
+        } catch (FileNotFoundException e) {
+            Notify.showNotify(getActivity(), "File could not be opened for writing!", Style.ERROR);
+            e.printStackTrace();
+        }
+    }
+
+    public void proofVerify() {
+        setVerifyProgress(true, null);
+
+        final DnsResource resource = DnsResource.createNew(mResourceDomain);
+
+        new AsyncTask<Void,Void,LinkedVerifyResult>() {
+
+            @Override
+            protected LinkedVerifyResult doInBackground(Void... params) {
+                return resource.verify(mLinkedIdWizard.mFingerprint, mResourceNonce);
+            }
+
+            @Override
+            protected void onPostExecute(LinkedVerifyResult result) {
+                super.onPostExecute(result);
+                if (result.success()) {
+                    setVerifyProgress(false, true);
+                    mVerifiedResource = resource;
+                } else {
+                    setVerifyProgress(false, false);
+                    // on error, show error message
+                    result.createNotify(getActivity()).show();
+                }
+            }
+        }.execute();
+
+    }
+
+    public void startCertify() {
+
+        if (mVerifiedResource == null) {
+            Notify.showNotify(getActivity(), R.string.linked_need_verify, Style.ERROR);
+            return;
+        }
+
+        Intent intent = new Intent(getActivity(), PassphraseDialogActivity.class);
+        intent.putExtra(PassphraseDialogActivity.EXTRA_SUBKEY_ID, mLinkedIdWizard.mMasterKeyId);
+        startActivityForResult(intent, REQUEST_CODE_PASSPHRASE);
+
+    }
+
+    public void certifyLinkedIdentity (String passphrase) {
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+                getActivity(),
+                getString(R.string.progress_saving),
+                ProgressDialog.STYLE_HORIZONTAL,
+                true) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+                    if (returnData == null) {
+                        return;
+                    }
+                    final OperationResult result =
+                            returnData.getParcelable(OperationResult.EXTRA_RESULT);
+                    if (result == null) {
+                        return;
+                    }
+
+                    // if bad -> display here!
+                    if (!result.success()) {
+                        result.createNotify(getActivity()).show();
+                        return;
+                    }
+
+                    result.createNotify(getActivity()).show();
+
+                    // if good -> finish, return result to showkey and display there!
+                    // Intent intent = new Intent();
+                    // intent.putExtra(OperationResult.EXTRA_RESULT, result);
+                    // getActivity().setResult(EditKeyActivity.RESULT_OK, intent);
+
+                    // AffirmationCreateHttpsStep3Fragment frag =
+                    // AffirmationCreateHttpsStep3Fragment.newInstance(
+                    // mResourceDomain, mResourceNonce, mResourceString);
+
+                    // mAffirmationWizard.loadFragment(null, frag, AffirmationWizard.FRAG_ACTION_TO_RIGHT);
+
+                }
+            }
+        };
+
+        SaveKeyringParcel skp =
+                new SaveKeyringParcel(mLinkedIdWizard.mMasterKeyId, mLinkedIdWizard.mFingerprint);
+
+        WrappedUserAttribute ua =
+                LinkedIdentity.fromResource(mVerifiedResource, mResourceNonce).toUserAttribute();
+
+        skp.mAddUserAttribute.add(ua);
+
+        // Send all information needed to service to import key in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+        intent.setAction(KeychainIntentService.ACTION_EDIT_KEYRING);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+        data.putString(KeychainIntentService.EDIT_KEYRING_PASSPHRASE, passphrase);
+        data.putParcelable(KeychainIntentService.EDIT_KEYRING_PARCEL, skp);
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+
+    }
+
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            // For saving a file
+            case REQUEST_CODE_OUTPUT:
+                if (data == null) {
+                    return;
+                }
+                Uri uri = data.getData();
+                saveFile(uri);
+                break;
+            case REQUEST_CODE_PASSPHRASE:
+                if (resultCode == Activity.RESULT_OK && data != null) {
+                    String passphrase =
+                            data.getStringExtra(PassphraseDialogActivity.MESSAGE_DATA_PASSPHRASE);
+                    certifyLinkedIdentity(passphrase);
+                }
+                break;
+        }
+        super.onActivityResult(requestCode, resultCode, data);
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep1Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep1Fragment.java
new file mode 100644
index 000000000..7c5f1f032
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep1Fragment.java
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Patterns;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.resources.GenericHttpsResource;
+
+public class LinkedIdCreateHttpsStep1Fragment extends Fragment {
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditUri;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateHttpsStep1Fragment newInstance() {
+        LinkedIdCreateHttpsStep1Fragment frag = new LinkedIdCreateHttpsStep1Fragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_https_fragment_step1, container, false);
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                String uri = "https://" + mEditUri.getText();
+
+                if (!checkUri(uri)) {
+                    return;
+                }
+
+                String proofNonce = LinkedIdentity.generateNonce();
+                String proofText = GenericHttpsResource.generateText(getActivity(),
+                        mLinkedIdWizard.mFingerprint, proofNonce);
+
+                LinkedIdCreateHttpsStep2Fragment frag =
+                        LinkedIdCreateHttpsStep2Fragment.newInstance(uri, proofNonce, proofText);
+
+                mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+
+            }
+        });
+
+        view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        mEditUri = (EditText) view.findViewById(R.id.linked_create_https_uri);
+
+        mEditUri.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+                String uri = "https://" + editable;
+                if (uri.length() > 0) {
+                    if (checkUri(uri)) {
+                        mEditUri.setCompoundDrawablesWithIntrinsicBounds(0, 0,
+                                R.drawable.uid_mail_ok, 0);
+                    } else {
+                        mEditUri.setCompoundDrawablesWithIntrinsicBounds(0, 0,
+                                R.drawable.uid_mail_bad, 0);
+                    }
+                } else {
+                    // remove drawable if email is empty
+                    mEditUri.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
+                }
+            }
+        });
+
+        mEditUri.setText("mugenguild.com/pgpkey.txt");
+
+        return view;
+    }
+
+    private static boolean checkUri(String uri) {
+        return Patterns.WEB_URL.matcher(uri).matches();
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep2Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep2Fragment.java
new file mode 100644
index 000000000..0d78bad27
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateHttpsStep2Fragment.java
@@ -0,0 +1,366 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.graphics.PorterDuff;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.Message;
+import android.os.Messenger;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.operations.results.LinkedVerifyResult;
+import org.sufficientlysecure.keychain.operations.results.OperationResult;
+import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.resources.GenericHttpsResource;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.service.SaveKeyringParcel;
+import org.sufficientlysecure.keychain.ui.PassphraseDialogActivity;
+import org.sufficientlysecure.keychain.ui.util.Notify;
+import org.sufficientlysecure.keychain.ui.util.Notify.Style;
+import org.sufficientlysecure.keychain.util.FileHelper;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.PrintWriter;
+import java.net.URI;
+import java.net.URISyntaxException;
+
+public class LinkedIdCreateHttpsStep2Fragment extends Fragment {
+
+    private static final int REQUEST_CODE_OUTPUT = 0x00007007;
+    private static final int REQUEST_CODE_PASSPHRASE = 0x00007008;
+
+    public static final String URI = "uri", NONCE = "nonce", TEXT = "text";
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditUri;
+    ImageView mVerifyImage;
+    View mVerifyProgress;
+    TextView mVerifyStatus;
+
+    String mResourceUri;
+    String mResourceNonce, mResourceString;
+
+    // This is a resource, set AFTER it has been verified
+    GenericHttpsResource mVerifiedResource = null;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateHttpsStep2Fragment newInstance
+            (String uri, String proofNonce, String proofText) {
+
+        LinkedIdCreateHttpsStep2Fragment frag = new LinkedIdCreateHttpsStep2Fragment();
+
+        Bundle args = new Bundle();
+        args.putString(URI, uri);
+        args.putString(NONCE, proofNonce);
+        args.putString(TEXT, proofText);
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_https_fragment_step2, container, false);
+
+        mResourceUri = getArguments().getString(URI);
+        mResourceNonce = getArguments().getString(NONCE);
+        mResourceString = getArguments().getString(TEXT);
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                startCertify();
+            }
+        });
+
+        view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        mVerifyImage = (ImageView) view.findViewById(R.id.verify_image);
+        mVerifyProgress = view.findViewById(R.id.verify_progress);
+        mVerifyStatus = (TextView) view.findViewById(R.id.verify_status);
+
+        view.findViewById(R.id.button_send).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofSend();
+            }
+        });
+
+        view.findViewById(R.id.button_save).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofSave();
+            }
+        });
+
+        view.findViewById(R.id.button_verify).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofVerify();
+            }
+        });
+
+        mEditUri = (EditText) view.findViewById(R.id.linked_create_https_uri);
+        mEditUri.setText(mResourceUri);
+
+        setVerifyProgress(false, null);
+        mVerifyStatus.setText(R.string.linked_verify_pending);
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+    }
+
+    public void setVerifyProgress(boolean on, Boolean success) {
+        mVerifyProgress.setVisibility(on ? View.VISIBLE : View.GONE);
+        mVerifyImage.setVisibility(on ? View.GONE : View.VISIBLE);
+        if (success == null) {
+            mVerifyStatus.setText(R.string.linked_verifying);
+            mVerifyImage.setImageResource(R.drawable.status_signature_unverified_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.tertiary_text_light),
+                    PorterDuff.Mode.SRC_IN);
+        } else if (success) {
+            mVerifyStatus.setText(R.string.linked_verify_success);
+            mVerifyImage.setImageResource(R.drawable.status_signature_verified_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.android_green_dark),
+                    PorterDuff.Mode.SRC_IN);
+        } else {
+            mVerifyStatus.setText(R.string.linked_verify_error);
+            mVerifyImage.setImageResource(R.drawable.status_signature_unknown_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.android_red_dark),
+                    PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    private void proofSend () {
+        Intent sendIntent = new Intent();
+        sendIntent.setAction(Intent.ACTION_SEND);
+        sendIntent.putExtra(Intent.EXTRA_TEXT, mResourceString);
+        sendIntent.setType("text/plain");
+        startActivity(sendIntent);
+    }
+
+    private void proofSave () {
+        String state = Environment.getExternalStorageState();
+        if (!Environment.MEDIA_MOUNTED.equals(state)) {
+            Notify.showNotify(getActivity(), "External storage not available!", Style.ERROR);
+            return;
+        }
+
+        String targetName = "pgpkey.txt";
+
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+            File targetFile = new File(Constants.Path.APP_DIR, targetName);
+            FileHelper.saveFile(this, getString(R.string.title_decrypt_to_file),
+                    getString(R.string.specify_file_to_decrypt_to), targetFile, REQUEST_CODE_OUTPUT);
+        } else {
+            FileHelper.saveDocument(this, "text/plain", targetName, REQUEST_CODE_OUTPUT);
+        }
+    }
+
+    private void saveFile(Uri uri) {
+        try {
+            PrintWriter out =
+                    new PrintWriter(getActivity().getContentResolver().openOutputStream(uri));
+            out.print(mResourceString);
+            if (out.checkError()) {
+                Notify.showNotify(getActivity(), "Error writing file!", Style.ERROR);
+            }
+        } catch (FileNotFoundException e) {
+            Notify.showNotify(getActivity(), "File could not be opened for writing!", Style.ERROR);
+            e.printStackTrace();
+        }
+    }
+
+    public void proofVerify() {
+        setVerifyProgress(true, null);
+
+        try {
+            final GenericHttpsResource resource = GenericHttpsResource.createNew(new URI(mResourceUri));
+
+            new AsyncTask<Void,Void,LinkedVerifyResult>() {
+
+                @Override
+                protected LinkedVerifyResult doInBackground(Void... params) {
+                    return resource.verify(mLinkedIdWizard.mFingerprint, mResourceNonce);
+                }
+
+                @Override
+                protected void onPostExecute(LinkedVerifyResult result) {
+                    super.onPostExecute(result);
+                    if (result.success()) {
+                        setVerifyProgress(false, true);
+                        mVerifiedResource = resource;
+                    } else {
+                        setVerifyProgress(false, false);
+                        // on error, show error message
+                        result.createNotify(getActivity()).show();
+                    }
+                }
+            }.execute();
+        } catch (URISyntaxException e) {
+            e.printStackTrace();
+        }
+
+    }
+
+    public void startCertify() {
+
+        if (mVerifiedResource == null) {
+            Notify.showNotify(getActivity(), R.string.linked_need_verify, Notify.Style.ERROR);
+            return;
+        }
+
+        Intent intent = new Intent(getActivity(), PassphraseDialogActivity.class);
+        intent.putExtra(PassphraseDialogActivity.EXTRA_SUBKEY_ID, mLinkedIdWizard.mMasterKeyId);
+        startActivityForResult(intent, REQUEST_CODE_PASSPHRASE);
+
+    }
+
+    public void certifyLinkedIdentity (String passphrase) {
+        KeychainIntentServiceHandler saveHandler = new KeychainIntentServiceHandler(
+                getActivity(),
+                getString(R.string.progress_saving),
+                ProgressDialog.STYLE_HORIZONTAL,
+                true) {
+            public void handleMessage(Message message) {
+                // handle messages by standard KeychainIntentServiceHandler first
+                super.handleMessage(message);
+
+                if (message.arg1 == KeychainIntentServiceHandler.MESSAGE_OKAY) {
+
+                    // get returned data bundle
+                    Bundle returnData = message.getData();
+                    if (returnData == null) {
+                        return;
+                    }
+                    final OperationResult result =
+                            returnData.getParcelable(OperationResult.EXTRA_RESULT);
+                    if (result == null) {
+                        return;
+                    }
+
+                    // if bad -> display here!
+                    if (!result.success()) {
+                        result.createNotify(getActivity()).show();
+                        return;
+                    }
+
+                    result.createNotify(getActivity()).show();
+
+                    // if good -> finish, return result to showkey and display there!
+                    // Intent intent = new Intent();
+                    // intent.putExtra(OperationResult.EXTRA_RESULT, result);
+                    // getActivity().setResult(EditKeyActivity.RESULT_OK, intent);
+
+                    // AffirmationCreateHttpsStep3Fragment frag =
+                    // AffirmationCreateHttpsStep3Fragment.newInstance(
+                    // mResourceUri, mResourceNonce, mResourceString);
+
+                    // mAffirmationWizard.loadFragment(null, frag, AffirmationWizard.FRAG_ACTION_TO_RIGHT);
+
+                }
+            }
+        };
+
+        SaveKeyringParcel skp =
+                new SaveKeyringParcel(mLinkedIdWizard.mMasterKeyId, mLinkedIdWizard.mFingerprint);
+
+        WrappedUserAttribute ua =
+                LinkedIdentity.fromResource(mVerifiedResource, mResourceNonce).toUserAttribute();
+
+        skp.mAddUserAttribute.add(ua);
+
+        // Send all information needed to service to import key in other thread
+        Intent intent = new Intent(getActivity(), KeychainIntentService.class);
+        intent.setAction(KeychainIntentService.ACTION_EDIT_KEYRING);
+
+        // fill values for this action
+        Bundle data = new Bundle();
+        data.putString(KeychainIntentService.EDIT_KEYRING_PASSPHRASE, passphrase);
+        data.putParcelable(KeychainIntentService.EDIT_KEYRING_PARCEL, skp);
+        intent.putExtra(KeychainIntentService.EXTRA_DATA, data);
+
+        // Create a new Messenger for the communication back
+        Messenger messenger = new Messenger(saveHandler);
+        intent.putExtra(KeychainIntentService.EXTRA_MESSENGER, messenger);
+
+        // show progress dialog
+        saveHandler.showProgressDialog(getActivity());
+
+        // start service with intent
+        getActivity().startService(intent);
+
+    }
+
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        switch (requestCode) {
+            // For saving a file
+            case REQUEST_CODE_OUTPUT:
+                if (data == null) {
+                    return;
+                }
+                Uri uri = data.getData();
+                saveFile(uri);
+                break;
+            case REQUEST_CODE_PASSPHRASE:
+                if (resultCode == Activity.RESULT_OK && data != null) {
+                    String passphrase =
+                            data.getStringExtra(PassphraseDialogActivity.MESSAGE_DATA_PASSPHRASE);
+                    certifyLinkedIdentity(passphrase);
+                }
+                break;
+        }
+        super.onActivityResult(requestCode, resultCode, data);
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep1Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep1Fragment.java
new file mode 100644
index 000000000..25a4f6463
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep1Fragment.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.linked.LinkedIdentity;
+import org.sufficientlysecure.keychain.pgp.linked.resources.TwitterResource;
+import org.sufficientlysecure.keychain.ui.util.Notify;
+
+import java.io.IOException;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+public class LinkedIdCreateTwitterStep1Fragment extends Fragment {
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditHandle;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateTwitterStep1Fragment newInstance() {
+        LinkedIdCreateTwitterStep1Fragment frag = new LinkedIdCreateTwitterStep1Fragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_twitter_fragment_step1, container, false);
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                final String handle = mEditHandle.getText().toString();
+
+                new AsyncTask<Void,Void,Boolean>() {
+
+                    @Override
+                    protected Boolean doInBackground(Void... params) {
+                        return true; // checkHandle(handle);
+                    }
+
+                    @Override
+                    protected void onPostExecute(Boolean result) {
+                        super.onPostExecute(result);
+
+                        if (result == null) {
+                            Notify.showNotify(getActivity(), "Connection error while checking username!", Notify.Style.ERROR);
+                            return;
+                        }
+
+                        if (!result) {
+                            Notify.showNotify(getActivity(), "This handle does not exist on Twitter!", Notify.Style.ERROR);
+                            return;
+                        }
+
+                        String proofNonce = LinkedIdentity.generateNonce();
+                        String proofText = TwitterResource.generateText(getActivity(),
+                                mLinkedIdWizard.mFingerprint, proofNonce);
+
+                        LinkedIdCreateTwitterStep2Fragment frag =
+                                LinkedIdCreateTwitterStep2Fragment.newInstance(handle, proofNonce, proofText);
+
+                        mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+                    }
+                }.execute();
+
+            }
+        });
+
+        view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        mEditHandle = (EditText) view.findViewById(R.id.linked_create_twitter_handle);
+        mEditHandle.setText("Valodim");
+
+        return view;
+    }
+
+    private static Boolean checkHandle(String handle) {
+        try {
+            HttpURLConnection nection =
+                    (HttpURLConnection) new URL("https://twitter.com/" + handle).openConnection();
+            nection.setRequestMethod("HEAD");
+            return nection.getResponseCode() == 200;
+        } catch (IOException e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep2Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep2Fragment.java
new file mode 100644
index 000000000..c02a76669
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep2Fragment.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.InputFilter;
+import android.text.TextWatcher;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.R;
+
+public class LinkedIdCreateTwitterStep2Fragment extends Fragment {
+
+    private static final int REQUEST_CODE_OUTPUT = 0x00007007;
+
+    public static final String HANDLE = "uri", NONCE = "nonce", TEXT = "text";
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditTweetCustom, mEditTweetPreview;
+    ImageView mVerifyImage;
+    View mVerifyProgress;
+    TextView mVerifyStatus, mEditTweetTextLen;
+
+    String mResourceHandle;
+    String mResourceNonce, mResourceString;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateTwitterStep2Fragment newInstance
+            (String handle, String proofNonce, String proofText) {
+
+        LinkedIdCreateTwitterStep2Fragment frag = new LinkedIdCreateTwitterStep2Fragment();
+
+        Bundle args = new Bundle();
+        args.putString(HANDLE, handle);
+        args.putString(NONCE, proofNonce);
+        args.putString(TEXT, proofText);
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_twitter_fragment_step2, container, false);
+
+        mResourceHandle = getArguments().getString(HANDLE);
+        mResourceNonce = getArguments().getString(NONCE);
+        mResourceString = getArguments().getString(TEXT);
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                LinkedIdCreateTwitterStep3Fragment frag =
+                        LinkedIdCreateTwitterStep3Fragment.newInstance(mResourceHandle,
+                                mResourceNonce, mResourceString,
+                                mEditTweetCustom.getText().toString());
+
+                mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+            }
+        });
+
+        view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        mVerifyImage = (ImageView) view.findViewById(R.id.verify_image);
+        mVerifyProgress = view.findViewById(R.id.verify_progress);
+        mVerifyStatus = (TextView) view.findViewById(R.id.verify_status);
+
+        mEditTweetPreview = (EditText) view.findViewById(R.id.linked_create_twitter_preview);
+        mEditTweetPreview.setText(mResourceString);
+
+        mEditTweetCustom = (EditText) view.findViewById(R.id.linked_create_twitter_custom);
+        mEditTweetCustom.setFilters(new InputFilter[] {
+                new InputFilter.LengthFilter(139 - mResourceString.length())
+        });
+
+        mEditTweetTextLen = (TextView) view.findViewById(R.id.linked_create_twitter_textlen);
+        mEditTweetTextLen.setText(mResourceString.length() + "/140");
+
+        mEditTweetCustom.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence charSequence, int i, int i2, int i3) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable editable) {
+                if (editable != null && editable.length() > 0) {
+                    String str = editable + " " + mResourceString;
+                    mEditTweetPreview.setText(str);
+
+                    mEditTweetTextLen.setText(str.length() + "/140");
+                    mEditTweetTextLen.setTextColor(getResources().getColor(str.length() == 140
+                            ? R.color.android_red_dark
+                            : R.color.primary_dark_material_light));
+
+
+                } else {
+                    mEditTweetPreview.setText(mResourceString);
+                    mEditTweetTextLen.setText(mResourceString.length() + "/140");
+                }
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep3Fragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep3Fragment.java
new file mode 100644
index 000000000..23e50d9dc
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdCreateTwitterStep3Fragment.java
@@ -0,0 +1,235 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.graphics.PorterDuff;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.ViewGroup;
+import android.widget.EditText;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.ui.util.Notify;
+
+import java.util.List;
+
+public class LinkedIdCreateTwitterStep3Fragment extends Fragment {
+
+    public static final String HANDLE = "uri", NONCE = "nonce", TEXT = "text", CUSTOM = "custom";
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    EditText mEditTweetPreview;
+    ImageView mVerifyImage;
+    View mVerifyProgress;
+    TextView mVerifyStatus;
+
+    String mResourceHandle, mCustom, mFullString;
+    String mResourceNonce, mResourceString;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdCreateTwitterStep3Fragment newInstance
+            (String handle, String proofNonce, String proofText, String customText) {
+
+        LinkedIdCreateTwitterStep3Fragment frag = new LinkedIdCreateTwitterStep3Fragment();
+
+        Bundle args = new Bundle();
+        args.putString(HANDLE, handle);
+        args.putString(NONCE, proofNonce);
+        args.putString(TEXT, proofText);
+        args.putString(CUSTOM, customText);
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        final View view = inflater.inflate(R.layout.linked_create_twitter_fragment_step3, container, false);
+
+        mResourceHandle = getArguments().getString(HANDLE);
+        mResourceNonce = getArguments().getString(NONCE);
+        mResourceString = getArguments().getString(TEXT);
+        mCustom = getArguments().getString(CUSTOM);
+
+        mFullString = mCustom.isEmpty() ? mResourceString : (mCustom + " " + mResourceString);
+
+        mVerifyImage = (ImageView) view.findViewById(R.id.verify_image);
+        mVerifyProgress = view.findViewById(R.id.verify_progress);
+        mVerifyStatus = (TextView) view.findViewById(R.id.verify_status);
+
+        mEditTweetPreview = (EditText) view.findViewById(R.id.linked_create_twitter_preview);
+        mEditTweetPreview.setText(mFullString);
+
+        view.findViewById(R.id.back_button).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                mLinkedIdWizard.loadFragment(null, null, LinkedIdWizard.FRAG_ACTION_TO_LEFT);
+            }
+        });
+
+        view.findViewById(R.id.button_send).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofSend();
+            }
+        });
+
+        view.findViewById(R.id.button_share).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofShare();
+            }
+        });
+
+        view.findViewById(R.id.button_verify).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                proofVerify();
+            }
+        });
+
+        setVerifyProgress(false, null);
+        mVerifyStatus.setText(R.string.linked_verify_pending);
+
+
+        view.findViewById(R.id.next_button).setOnClickListener(new OnClickListener() {
+            @Override
+            public void onClick(View v) {
+
+                // AffirmationCreateHttpsStep2Fragment frag =
+                // AffirmationCreateHttpsStep2Fragment.newInstance();
+
+                // mAffirmationWizard.loadFragment(null, frag, AffirmationWizard.FRAG_ACTION_TO_RIGHT);
+            }
+        });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+    }
+
+    public void setVerifyProgress(boolean on, Boolean success) {
+        mVerifyProgress.setVisibility(on ? View.VISIBLE : View.GONE);
+        mVerifyImage.setVisibility(on ?  View.GONE : View.VISIBLE);
+        if (success == null) {
+            mVerifyStatus.setText(R.string.linked_verifying);
+            mVerifyImage.setImageResource(R.drawable.status_signature_unverified_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.tertiary_text_light),
+                    PorterDuff.Mode.SRC_IN);
+        } else if (success) {
+            mVerifyStatus.setText(R.string.linked_verify_success);
+            mVerifyImage.setImageResource(R.drawable.status_signature_verified_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.android_green_dark),
+                    PorterDuff.Mode.SRC_IN);
+        } else {
+            mVerifyStatus.setText(R.string.linked_verify_error);
+            mVerifyImage.setImageResource(R.drawable.status_signature_unknown_cutout);
+            mVerifyImage.setColorFilter(getResources().getColor(R.color.android_red_dark),
+                    PorterDuff.Mode.SRC_IN);
+        }
+    }
+
+    public void proofVerify() {
+        setVerifyProgress(true, null);
+
+        /*
+        try {
+            final TwitterResource resource = TwitterResource.createNew(new URI(mResourceHandle));
+
+            new AsyncTask<Void,Void,LinkedVerifyResult>() {
+
+                @Override
+                protected LinkedVerifyResult doInBackground(Void... params) {
+                    return resource.verify(mAffirmationWizard.mFingerprint, mResourceNonce);
+                }
+
+                @Override
+                protected void onPostExecute(LinkedVerifyResult result) {
+                    super.onPostExecute(result);
+                    if (result.success()) {
+                        setVerifyProgress(false, true);
+                    } else {
+                        setVerifyProgress(false, false);
+                        // on error, show error message
+                        result.createNotify(getActivity()).show();
+                    }
+                }
+            }.execute();
+        } catch (URISyntaxException e) {
+            e.printStackTrace();
+        }
+        */
+
+    }
+
+    private void proofShare() {
+        Intent sendIntent = new Intent();
+        sendIntent.setAction(Intent.ACTION_SEND);
+        sendIntent.putExtra(Intent.EXTRA_TEXT, mFullString);
+        sendIntent.setType("text/plain");
+        startActivity(sendIntent);
+    }
+
+    private void proofSend() {
+
+        Intent tweetIntent = new Intent(Intent.ACTION_SEND);
+        tweetIntent.putExtra(Intent.EXTRA_TEXT, mFullString);
+        tweetIntent.setType("text/plain");
+
+        PackageManager packManager = getActivity().getPackageManager();
+        List<ResolveInfo> resolvedInfoList = packManager.queryIntentActivities(tweetIntent,
+                PackageManager.MATCH_DEFAULT_ONLY);
+
+        boolean resolved = false;
+        for(ResolveInfo resolveInfo : resolvedInfoList){
+            if(resolveInfo.activityInfo.packageName.startsWith("com.twitter.android")) {
+                tweetIntent.setClassName(
+                    resolveInfo.activityInfo.packageName,
+                    resolveInfo.activityInfo.name );
+                resolved = true;
+                break;
+            }
+        }
+
+        if (resolved) {
+            startActivity(tweetIntent);
+        } else {
+            Notify.showNotify(getActivity(),
+                    "Twitter app is not installed, please use the send intent!",
+                    Notify.Style.ERROR);
+        }
+
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdSelectFragment.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdSelectFragment.java
new file mode 100644
index 000000000..abe7dbaf1
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdSelectFragment.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import org.sufficientlysecure.keychain.R;
+
+public class LinkedIdSelectFragment extends Fragment {
+
+    LinkedIdWizard mLinkedIdWizard;
+
+    /**
+     * Creates new instance of this fragment
+     */
+    public static LinkedIdSelectFragment newInstance() {
+        LinkedIdSelectFragment frag = new LinkedIdSelectFragment();
+
+        Bundle args = new Bundle();
+        frag.setArguments(args);
+
+        return frag;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.linked_select_fragment, container, false);
+
+        view.findViewById(R.id.linked_create_https_button)
+                .setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        LinkedIdCreateHttpsStep1Fragment frag =
+                                LinkedIdCreateHttpsStep1Fragment.newInstance();
+
+                        mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+                    }
+                });
+
+        view.findViewById(R.id.linked_create_dns_button)
+                .setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        LinkedIdCreateDnsStep1Fragment frag =
+                                LinkedIdCreateDnsStep1Fragment.newInstance();
+
+                        mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+                    }
+                });
+
+        view.findViewById(R.id.linked_create_twitter_button)
+                .setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        LinkedIdCreateTwitterStep1Fragment frag =
+                                LinkedIdCreateTwitterStep1Fragment.newInstance();
+
+                        mLinkedIdWizard.loadFragment(null, frag, LinkedIdWizard.FRAG_ACTION_TO_RIGHT);
+                    }
+                });
+
+        return view;
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mLinkedIdWizard = (LinkedIdWizard) getActivity();
+    }
+
+}
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdWizard.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdWizard.java
new file mode 100644
index 000000000..b8f3329c1
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/linked/LinkedIdWizard.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.linked;
+
+import android.net.Uri;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentTransaction;
+import android.support.v7.app.ActionBarActivity;
+
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.R;
+import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
+import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.util.Log;
+
+public class LinkedIdWizard extends ActionBarActivity {
+
+    public static final int FRAG_ACTION_START = 0;
+    public static final int FRAG_ACTION_TO_RIGHT = 1;
+    public static final int FRAG_ACTION_TO_LEFT = 2;
+
+    long mMasterKeyId;
+    byte[] mFingerprint;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.create_key_activity);
+
+        try {
+            Uri uri = getIntent().getData();
+            CachedPublicKeyRing ring = new ProviderHelper(this).getCachedPublicKeyRing(uri);
+            mMasterKeyId = ring.extractOrGetMasterKeyId();
+            mFingerprint = ring.getFingerprint();
+        } catch (PgpKeyNotFoundException e) {
+            Log.e(Constants.TAG, "Invalid uri given, key does not exist!");
+            finish();
+            return;
+        }
+
+        // pass extras into fragment
+        LinkedIdSelectFragment frag = LinkedIdSelectFragment.newInstance();
+        loadFragment(null, frag, FRAG_ACTION_START);
+    }
+
+    public void loadFragment(Bundle savedInstanceState, Fragment fragment, int action) {
+        // However, if we're being restored from a previous state,
+        // then we don't need to do anything and should return or else
+        // we could end up with overlapping fragments.
+        if (savedInstanceState != null) {
+            return;
+        }
+
+        // Add the fragment to the 'fragment_container' FrameLayout
+        // NOTE: We use commitAllowingStateLoss() to prevent weird crashes!
+        FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+
+        switch (action) {
+            case FRAG_ACTION_START:
+                transaction.setCustomAnimations(0, 0);
+                transaction.replace(R.id.create_key_fragment_container, fragment)
+                        .commitAllowingStateLoss();
+                break;
+            case FRAG_ACTION_TO_LEFT:
+                getSupportFragmentManager().popBackStackImmediate();
+                break;
+            case FRAG_ACTION_TO_RIGHT:
+                transaction.setCustomAnimations(R.anim.frag_slide_in_from_right, R.anim.frag_slide_out_to_left,
+                        R.anim.frag_slide_in_from_left, R.anim.frag_slide_out_to_right);
+                transaction.addToBackStack(null);
+                transaction.replace(R.id.create_key_fragment_container, fragment)
+                        .commitAllowingStateLoss();
+                break;
+
+        }
+        // do it immediately!
+        getSupportFragmentManager().executePendingTransactions();
+    }
+
+}