39 lines
1.5 KiB
Java
39 lines
1.5 KiB
Java
/**
|
|
* Copyright (C) 2013 Open Whisper Systems
|
|
*
|
|
* 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.whispersystems.textsecure.crypto;
|
|
|
|
|
|
import android.content.Context;
|
|
|
|
import org.whispersystems.libaxolotl.SessionCipher;
|
|
import org.whispersystems.textsecure.storage.RecipientDevice;
|
|
import org.whispersystems.textsecure.storage.SessionRecordV2;
|
|
|
|
public class SessionCipherFactory {
|
|
|
|
public static SessionCipher getInstance(Context context,
|
|
MasterSecret masterSecret,
|
|
RecipientDevice recipient)
|
|
{
|
|
if (SessionRecordV2.hasSession(context, masterSecret, recipient)) {
|
|
SessionRecordV2 record = new SessionRecordV2(context, masterSecret, recipient);
|
|
return new SessionCipher(record);
|
|
} else {
|
|
throw new AssertionError("Attempt to initialize cipher for non-existing session.");
|
|
}
|
|
}
|
|
} |