1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* Copyright (C) 2012-2013 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.dialog;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import org.sufficientlysecure.keychain.Id;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.util.Choice;
import java.util.ArrayList;
public class CreateKeyDialogFragment extends DialogFragment {
public interface OnAlgorithmSelectedListener {
public void onAlgorithmSelected(Choice algorithmChoice, int keySize);
}
private static final String ARG_EDITOR_CHILD_COUNT = "child_count";
private int mNewKeySize;
private Choice mNewKeyAlgorithmChoice;
private OnAlgorithmSelectedListener mAlgorithmSelectedListener;
public void setOnAlgorithmSelectedListener(OnAlgorithmSelectedListener listener) {
mAlgorithmSelectedListener = listener;
}
public static CreateKeyDialogFragment newInstance(int mEditorChildCount) {
CreateKeyDialogFragment frag = new CreateKeyDialogFragment();
Bundle args = new Bundle();
args.putInt(ARG_EDITOR_CHILD_COUNT, mEditorChildCount);
frag.setArguments(args);
return frag;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final FragmentActivity context = getActivity();
final LayoutInflater mInflater;
final int childCount = getArguments().getInt(ARG_EDITOR_CHILD_COUNT);
mInflater = context.getLayoutInflater();
AlertDialog.Builder dialog = new AlertDialog.Builder(context);
View view = mInflater.inflate(R.layout.create_key_dialog, null);
dialog.setView(view);
dialog.setTitle(R.string.title_create_key);
boolean wouldBeMasterKey = (childCount == 0);
final Spinner algorithm = (Spinner) view.findViewById(R.id.create_key_algorithm);
ArrayList<Choice> choices = new ArrayList<Choice>();
choices.add(new Choice(Id.choice.algorithm.dsa, getResources().getString(
R.string.dsa)));
if (!wouldBeMasterKey) {
choices.add(new Choice(Id.choice.algorithm.elgamal, getResources().getString(
R.string.elgamal)));
}
choices.add(new Choice(Id.choice.algorithm.rsa, getResources().getString(
R.string.rsa)));
ArrayAdapter<Choice> adapter = new ArrayAdapter<Choice>(context,
android.R.layout.simple_spinner_item, choices);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
algorithm.setAdapter(adapter);
// make RSA the default
for (int i = 0; i < choices.size(); ++i) {
if (choices.get(i).getId() == Id.choice.algorithm.rsa) {
algorithm.setSelection(i);
break;
}
}
final Spinner keySize = (Spinner) view.findViewById(R.id.create_key_size);
ArrayAdapter<CharSequence> keySizeAdapter = ArrayAdapter.createFromResource(
context, R.array.key_size_spinner_values,
android.R.layout.simple_spinner_item);
keySizeAdapter
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
keySize.setAdapter(keySizeAdapter);
keySize.setSelection(3); // Default to 4096 for the key length
dialog.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface di, int id) {
di.dismiss();
try {
final String selectedItem = (String) keySize.getSelectedItem();
mNewKeySize = Integer.parseInt(selectedItem);
} catch (NumberFormatException e) {
mNewKeySize = 0;
}
mNewKeyAlgorithmChoice = (Choice) algorithm.getSelectedItem();
mAlgorithmSelectedListener.onAlgorithmSelected(mNewKeyAlgorithmChoice, mNewKeySize);
}
});
dialog.setCancelable(true);
dialog.setNegativeButton(android.R.string.cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface di, int id) {
di.dismiss();
}
});
final AlertDialog alertDialog = dialog.create();
final AdapterView.OnItemSelectedListener weakRsaListener = new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
final Choice selectedAlgorithm = (Choice) algorithm.getSelectedItem();
final int selectedKeySize = Integer.parseInt((String) keySize.getSelectedItem());
final boolean isWeakRsa = (selectedAlgorithm.getId() == Id.choice.algorithm.rsa &&
selectedKeySize <= 1024);
alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(!isWeakRsa);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
};
keySize.setOnItemSelectedListener(weakRsaListener);
algorithm.setOnItemSelectedListener(weakRsaListener);
return alertDialog;
}
}
|
