1 files changed, 68 insertions, 0 deletions
diff --git a/java/src/main/java/org/whispersystems/libaxolotl/groups/SenderKeyName.java b/java/src/main/java/org/whispersystems/libaxolotl/groups/SenderKeyName.java
new file mode 100644
index 00000000..ce4325ff
--- /dev/null
+++ b/java/src/main/java/org/whispersystems/libaxolotl/groups/SenderKeyName.java
@@ -0,0 +1,68 @@
+/**
+ * Copyright (C) 2014-2015 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.libaxolotl.groups;
+
+/**
+ * A representation of a (groupId + senderId + deviceId) tuple.
+ */
+public class SenderKeyName {
+
+  private final String groupId;
+  private final long   senderId;
+  private final int    deviceId;
+
+  public SenderKeyName(String groupId, long senderId, int deviceId) {
+    this.groupId  = groupId;
+    this.senderId = senderId;
+    this.deviceId = deviceId;
+  }
+
+  public String getGroupId() {
+    return groupId;
+  }
+
+  public long getSenderId() {
+    return senderId;
+  }
+
+  public int getDeviceId() {
+    return deviceId;
+  }
+
+  public String serialize() {
+    return groupId + "::" + String.valueOf(senderId) + "::" + String.valueOf(deviceId);
+  }
+
+  @Override
+  public boolean equals(Object other) {
+    if (other == null)                     return false;
+    if (!(other instanceof SenderKeyName)) return false;
+
+    SenderKeyName that = (SenderKeyName)other;
+
+    return
+        this.groupId.equals(that.groupId) &&
+        this.senderId == that.senderId &&
+        this.deviceId == that.deviceId;
+  }
+
+  @Override
+  public int hashCode() {
+    return this.groupId.hashCode() ^ (int)this.senderId ^ this.deviceId;
+  }
+
+}