android/src/androidTest/java/org/whispersystems/libaxolotl/CurveTest.java


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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() {
    assertTrue(Curve.isNative());
  }

  public void testLargeSignatures() throws InvalidKeyException {
    ECKeyPair keys      = Curve.generateKeyPair();
    byte[]    message   = new byte[1024 * 1024];
    byte[]    signature = Curve.calculateSignature(keys.getPrivateKey(), message);

    assertTrue(Curve.verifySignature(keys.getPublicKey(), message, signature));

    message[0] ^= 0x01;

    assertFalse(Curve.verifySignature(keys.getPublicKey(), message, signature));
  }

}