1 files changed, 26 insertions, 0 deletions
diff --git a/java/src/test/java/org/whispersystems/libaxolotl/CurveTest.java b/java/src/test/java/org/whispersystems/libaxolotl/CurveTest.java
new file mode 100644
index 00000000..734f6c86
--- /dev/null
+++ b/java/src/test/java/org/whispersystems/libaxolotl/CurveTest.java
@@ -0,0 +1,26 @@
+package org.whispersystems.libaxolotl;
+
+import junit.framework.TestCase;
+
+import org.whispersystems.libaxolotl.ecc.Curve;
+import org.whispersystems.libaxolotl.ecc.ECKeyPair;
+
+public class CurveTest extends TestCase {
+
+  public void testPureJava() {
+    assertFalse(Curve.isNative());
+  }
+
+  public void testSignatureOverflow() throws InvalidKeyException {
+    ECKeyPair keys    = Curve.generateKeyPair();
+    byte[]    message = new byte[4096];
+
+    try {
+      byte[] signature = Curve.calculateSignature(keys.getPrivateKey(), message);
+      throw new InvalidKeyException("Should have asserted!");
+    } catch (IllegalArgumentException e) {
+      // Success!
+    }
+  }
+
+}