80 lines
2.4 KiB
C#
80 lines
2.4 KiB
C#
using System;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using Android.App;
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using Android.Content;
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using Android.OS;
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using Android.Runtime;
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using Android.Views;
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using Android.Widget;
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using Java.Util;
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using KeePassLib.Utility;
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using Keepass2android.Pluginsdk;
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namespace MasterKeePlugin
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{
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[BroadcastReceiver(Exported = true)]
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[IntentFilter(new[] {Strings.ActionOpenEntry, Strings.ActionEntryActionSelected })]
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public class ActionReceiver: PluginActionBroadcastReceiver
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{
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public override void OnReceive(Context context, Intent intent)
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{
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Android.Util.Log.Debug("KP2A_MasterKee", intent.Action);
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base.OnReceive(context, intent);
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}
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private static byte[] HashHMAC(byte[] key, byte[] message)
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{
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var hash = new HMACSHA256(key);
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return hash.ComputeHash(message);
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}
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protected override void OpenEntry(OpenEntryAction oe)
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{
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string masterkey;
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Android.Util.Log.Debug("KP2A_MasterKee", "Opening entry...");
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if (oe.EntryFields.TryGetValue("MK_MasterKey", out masterkey))
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{
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Android.Util.Log.Debug("KP2A_MasterKee", "Entry is MK entry.");
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string type;
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if (!oe.EntryFields.TryGetValue("MK_Type", out type))
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type = "Long Password";
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int counter = 1;
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string strCounter;
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if (oe.EntryFields.TryGetValue("MK_Site_Counter", out strCounter))
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{
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int.TryParse(strCounter, out counter);
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}
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Android.Util.Log.Debug("KP2A_MasterKee", "Calculating password...");
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string calculatedKey = MasterPassword.MpAlgorithm.GenerateContent(type,
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oe.EntryFields[KeepassDefs.TitleField],
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MemUtil.HexStringToByteArray(masterkey),
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counter,
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HashHMAC
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);
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Android.Util.Log.Debug("KP2A_MasterKee", "ok. Returning data.");
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try
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{
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oe.SetEntryField(KeepassDefs.PasswordField, calculatedKey, true);
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oe.SetEntryField("MK_MasterKey", "", true);
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oe.SetEntryField("MK_Type", "", true);
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oe.SetEntryField("MK_Site_Counter", "", true);
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}
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catch (Exception e)
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{
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Android.Util.Log.Debug("KP2A_MasterKee", e.ToString());
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}
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}
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Android.Util.Log.Debug("KP2A_MasterKee", "Done.");
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}
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protected override void ActionSelected(ActionSelectedAction asa)
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{
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}
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}
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} |