1 files changed, 108 insertions, 0 deletions
diff --git a/src/main/java/org/whispersystems/libaxolotl/ratchet/SymmetricAxolotlParameters.java b/src/main/java/org/whispersystems/libaxolotl/ratchet/SymmetricAxolotlParameters.java
new file mode 100644
index 00000000..7a63c45f
--- /dev/null
+++ b/src/main/java/org/whispersystems/libaxolotl/ratchet/SymmetricAxolotlParameters.java
@@ -0,0 +1,108 @@
+package org.whispersystems.libaxolotl.ratchet;
+
+import org.whispersystems.libaxolotl.IdentityKey;
+import org.whispersystems.libaxolotl.IdentityKeyPair;
+import org.whispersystems.libaxolotl.ecc.ECKeyPair;
+import org.whispersystems.libaxolotl.ecc.ECPublicKey;
+
+public class SymmetricAxolotlParameters {
+
+  private final ECKeyPair       ourBaseKey;
+  private final ECKeyPair       ourRatchetKey;
+  private final IdentityKeyPair ourIdentityKey;
+
+  private final ECPublicKey     theirBaseKey;
+  private final ECPublicKey     theirRatchetKey;
+  private final IdentityKey     theirIdentityKey;
+
+  SymmetricAxolotlParameters(ECKeyPair ourBaseKey, ECKeyPair ourRatchetKey,
+                             IdentityKeyPair ourIdentityKey, ECPublicKey theirBaseKey,
+                             ECPublicKey theirRatchetKey, IdentityKey theirIdentityKey)
+  {
+    this.ourBaseKey       = ourBaseKey;
+    this.ourRatchetKey    = ourRatchetKey;
+    this.ourIdentityKey   = ourIdentityKey;
+    this.theirBaseKey     = theirBaseKey;
+    this.theirRatchetKey  = theirRatchetKey;
+    this.theirIdentityKey = theirIdentityKey;
+
+    if (ourBaseKey == null || ourRatchetKey == null || ourIdentityKey == null ||
+        theirBaseKey == null || theirRatchetKey == null || theirIdentityKey == null)
+    {
+      throw new IllegalArgumentException("Null values!");
+    }
+  }
+
+  public ECKeyPair getOurBaseKey() {
+    return ourBaseKey;
+  }
+
+  public ECKeyPair getOurRatchetKey() {
+    return ourRatchetKey;
+  }
+
+  public IdentityKeyPair getOurIdentityKey() {
+    return ourIdentityKey;
+  }
+
+  public ECPublicKey getTheirBaseKey() {
+    return theirBaseKey;
+  }
+
+  public ECPublicKey getTheirRatchetKey() {
+    return theirRatchetKey;
+  }
+
+  public IdentityKey getTheirIdentityKey() {
+    return theirIdentityKey;
+  }
+
+  public static Builder newBuilder() {
+    return new Builder();
+  }
+
+  public static class Builder {
+    private ECKeyPair       ourBaseKey;
+    private ECKeyPair       ourRatchetKey;
+    private IdentityKeyPair ourIdentityKey;
+
+    private ECPublicKey     theirBaseKey;
+    private ECPublicKey     theirRatchetKey;
+    private IdentityKey     theirIdentityKey;
+
+    public Builder setOurBaseKey(ECKeyPair ourBaseKey) {
+      this.ourBaseKey = ourBaseKey;
+      return this;
+    }
+
+    public Builder setOurRatchetKey(ECKeyPair ourRatchetKey) {
+      this.ourRatchetKey = ourRatchetKey;
+      return this;
+    }
+
+    public Builder setOurIdentityKey(IdentityKeyPair ourIdentityKey) {
+      this.ourIdentityKey = ourIdentityKey;
+      return this;
+    }
+
+    public Builder setTheirBaseKey(ECPublicKey theirBaseKey) {
+      this.theirBaseKey = theirBaseKey;
+      return this;
+    }
+
+    public Builder setTheirRatchetKey(ECPublicKey theirRatchetKey) {
+      this.theirRatchetKey = theirRatchetKey;
+      return this;
+    }
+
+    public Builder setTheirIdentityKey(IdentityKey theirIdentityKey) {
+      this.theirIdentityKey = theirIdentityKey;
+      return this;
+    }
+
+    public SymmetricAxolotlParameters create() {
+      return new SymmetricAxolotlParameters(ourBaseKey, ourRatchetKey, ourIdentityKey,
+                                            theirBaseKey, theirRatchetKey, theirIdentityKey);
+    }
+  }
+}