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811479d168
1) Use the new /v2/keys API for storing/retrieving prekey bundles. 2) For sessions built with PreKeyBundle and PreKeyWhisperMessage, use a v3 ratcheting session when available.
41 lines
1.6 KiB
Java
41 lines
1.6 KiB
Java
/**
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* Copyright (C) 2013 Open Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.whispersystems.textsecure.crypto;
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import android.content.Context;
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import org.whispersystems.libaxolotl.SessionCipher;
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import org.whispersystems.libaxolotl.state.SessionStore;
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import org.whispersystems.textsecure.storage.RecipientDevice;
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import org.whispersystems.textsecure.storage.TextSecureSessionStore;
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public class SessionCipherFactory {
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public static SessionCipher getInstance(Context context,
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MasterSecret masterSecret,
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RecipientDevice recipient)
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{
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SessionStore sessionStore = new TextSecureSessionStore(context, masterSecret);
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if (sessionStore.containsSession(recipient.getRecipientId(), recipient.getDeviceId())) {
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return new SessionCipher(sessionStore, recipient.getRecipientId(), recipient.getDeviceId());
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} else {
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throw new AssertionError("Attempt to initialize cipher for non-existing session.");
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}
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}
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} |