1 files changed, 56 insertions, 0 deletions
diff --git a/src/main/java/org/whispersystems/libaxolotl/protocol/SenderKeyDistributionMessage.java b/src/main/java/org/whispersystems/libaxolotl/protocol/SenderKeyDistributionMessage.java
new file mode 100644
index 00000000..424dd87c
--- /dev/null
+++ b/src/main/java/org/whispersystems/libaxolotl/protocol/SenderKeyDistributionMessage.java
@@ -0,0 +1,56 @@
+package org.whispersystems.libaxolotl.protocol;
+
+import com.google.protobuf.ByteString;
+
+import org.whispersystems.libaxolotl.ecc.ECPublicKey;
+import org.whispersystems.libaxolotl.util.ByteUtil;
+
+public class SenderKeyDistributionMessage implements CiphertextMessage {
+
+  private final int         id;
+  private final int         iteration;
+  private final byte[]      chainKey;
+  private final ECPublicKey signatureKey;
+  private final byte[]      serialized;
+
+  public SenderKeyDistributionMessage(int id, int iteration, byte[] chainKey, ECPublicKey signatureKey) {
+    byte[] version = {ByteUtil.intsToByteHighAndLow(CURRENT_VERSION, CURRENT_VERSION)};
+
+    this.id           = id;
+    this.iteration    = iteration;
+    this.chainKey     = chainKey;
+    this.signatureKey = signatureKey;
+    this.serialized   = WhisperProtos.SenderKeyDistributionMessage.newBuilder()
+                                                                  .setId(id)
+                                                                  .setIteration(iteration)
+                                                                  .setChainKey(ByteString.copyFrom(chainKey))
+                                                                  .setSigningKey(ByteString.copyFrom(signatureKey.serialize()))
+                                                                  .build().toByteArray();
+  }
+
+  @Override
+  public byte[] serialize() {
+    return serialized;
+  }
+
+  @Override
+  public int getType() {
+    return SENDERKEY_DISTRIBUTION_TYPE;
+  }
+
+  public int getIteration() {
+    return iteration;
+  }
+
+  public byte[] getChainKey() {
+    return chainKey;
+  }
+
+  public ECPublicKey getSignatureKey() {
+    return signatureKey;
+  }
+
+  public int getId() {
+    return id;
+  }
+}