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/*
This file is part of GNUnet.
Copyright (C) 2012, 2013 Christian Grothoff (and other contributing authors)
GNUnet 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, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
package org.gnunet.util;
import org.gnunet.util.crypto.EcdsaPrivateKey;
import org.gnunet.util.crypto.EcdsaPublicKey;
import org.gnunet.util.crypto.EcdsaSignature;
import org.gnunet.util.crypto.Ed25519;
import org.junit.Assert;
import org.junit.Test;
import java.math.BigInteger;
public class EcdsaTest {
@Test
public void test_sign_success() {
byte[] data = "GNUnet".getBytes();
//EcdsaPrivateKey privateKey = EcdsaPrivateKey.createRandom();
EcdsaPrivateKey privateKey = new EcdsaPrivateKey();
privateKey.d = Ed25519.encodeScalar(new BigInteger("9751885127070397687372377515580876465521419304255864589795046632195735740054"));
EcdsaPublicKey publicKey = privateKey.getPublicKey();
EcdsaSignature signature = privateKey.sign(data, 0, publicKey);
System.out.println("private key: " + Ed25519.decodeScalar(privateKey.d));
System.out.println("public key: " + publicKey.asPoint());
System.out.println("signature r: " + Ed25519.decodeScalar(signature.r));
System.out.println("signature s: " + Ed25519.decodeScalar(signature.s));
Assert.assertTrue(signature.verify(data, 0, publicKey));
}
@Test
public void test_sign_failure() {
byte[] data = "GNUnet".getBytes();
EcdsaPrivateKey privateKey = EcdsaPrivateKey.createRandom();
EcdsaPublicKey publicKey = privateKey.getPublicKey();
EcdsaSignature signature = EcdsaSignature.randomGarbage();
Assert.assertFalse(signature.verify(data, 0, publicKey));
}
}
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