Examples of ECKey

com.nimbusds.jose.jwk.ECKey
kipedia.org/wiki/Elliptic_curve_cryptography @author Vladimir Dzhuvinov @author Justin Richer @version $version$ (2014-04-02)
java.security.interfaces.ECKey
The interface to an elliptic curve (EC) key. @author Valerie Peng @version 1.3, 11/17/05 @since 1.5
org.ethereum.crypto.ECKey
b.com/bitcoinj/bitcoinj/blob/master/core/src/main/java/com/google/bitcoin/core/ECKey.java">bitcoinj on GitHub

Examples of org.ethereum.crypto.ECKey

        // cow --> cd2a3d9f938e13cd947ec05abc7fe734df8dd826


        BigInteger value = new BigInteger("1000000000000000000000");


        byte[] privKey = HashUtil.sha3("cat".getBytes());
        ECKey ecKey = ECKey.fromPrivate(privKey);


        byte[] senderPrivKey = HashUtil.sha3("cow".getBytes());


        byte[] gasPrice=  Hex.decode("09184e72a000");
        byte[] gas =      Hex.decode("4255");


        // Tn (nonce); Tp(pgas); Tg(gaslimi); Tt(value); Tv(value); Ti(sender);  Tw; Tr; Ts
        Transaction tx = new Transaction(null, gasPrice, gas, ecKey.getAddress(),
                value.toByteArray(),
                   null);


        tx.sign(senderPrivKey);


        System.out.println("v\t\t\t: " + Hex.toHexString(new byte[] { tx.getSignature().v }));
        System.out.println("r\t\t\t: " + Hex.toHexString(BigIntegers.asUnsignedByteArray(tx.getSignature().r)));
        System.out.println("s\t\t\t: " + Hex.toHexString(BigIntegers.asUnsignedByteArray(tx.getSignature().s)));


        System.out.println("RLP encoded tx\t\t: " + Hex.toHexString(tx.getEncoded()));


        // retrieve the signer/sender of the transaction
        ECKey key = ECKey.signatureToKey(tx.getHash(), tx.getSignature().toBase64());


        System.out.println("Tx unsigned RLP\t\t: " + Hex.toHexString(tx.getEncodedRaw()));
        System.out.println("Tx signed   RLP\t\t: " + Hex.toHexString(tx.getEncoded()));


        System.out.println("Signature public key\t: " + Hex.toHexString(key.getPubKey()));
        System.out.println("Sender is\t\t: " + Hex.toHexString(key.getAddress()));


        Assert.assertEquals("cd2a3d9f938e13cd947ec05abc7fe734df8dd826",
                Hex.toHexString(key.getAddress()));


        System.out.println(tx.toString());
    }

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Examples of org.ethereum.crypto.ECKey

      assertArrayEquals(pubKey, key.getPubKey());
  }
    
  @Test
  public void testGetPrivKeyBytes() {
    ECKey key = new ECKey();
    assertNotNull(key.getPrivKeyBytes());
    assertEquals(32, key.getPrivKeyBytes().length);
  }

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Examples of org.ethereum.crypto.ECKey

    assertEquals(32, key.getPrivKeyBytes().length);
  }


  @Test
  public void testEqualsObject() {
    ECKey key0 = new ECKey();
    ECKey key1 = ECKey.fromPrivate(privateKey);
    ECKey key2 = ECKey.fromPrivate(privateKey);
    
    assertFalse(key0.equals(key1));
    assertTrue(key1.equals(key1));
    assertTrue(key1.equals(key2));
  }

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Examples of org.ethereum.crypto.ECKey

    public void test3() throws Exception {


        // cat --> 79b08ad8787060333663d19704909ee7b1903e58
        // cow --> cd2a3d9f938e13cd947ec05abc7fe734df8dd826


    ECKey ecKey = ECKey.fromPrivate(HashUtil.sha3("cat".getBytes()));
        byte[] senderPrivKey = HashUtil.sha3("cow".getBytes());
        
    byte[] nonce = { 0x01 };
    byte[] gasPrice = Hex.decode("09184e72a000");
    byte[] gasLimit = Hex.decode("4255");
        BigInteger value = new BigInteger("1000000000000000000000000");


    Transaction tx = new Transaction(nonce, gasPrice, gasLimit,
        ecKey.getAddress(), value.toByteArray(), null);


        tx.sign(senderPrivKey);


        System.out.println("v\t\t\t: " + Hex.toHexString(new byte[] { tx.getSignature().v }));
        System.out.println("r\t\t\t: " + Hex.toHexString(BigIntegers.asUnsignedByteArray(tx.getSignature().r)));
        System.out.println("s\t\t\t: " + Hex.toHexString(BigIntegers.asUnsignedByteArray(tx.getSignature().s)));


        System.out.println("RLP encoded tx\t\t: " + Hex.toHexString(tx.getEncoded()));


        // retrieve the signer/sender of the transaction
        ECKey key = ECKey.signatureToKey(tx.getHash(), tx.getSignature().toBase64());


        System.out.println("Tx unsigned RLP\t\t: " + Hex.toHexString(tx.getEncodedRaw()));
        System.out.println("Tx signed   RLP\t\t: " + Hex.toHexString(tx.getEncoded()));


        System.out.println("Signature public key\t: " + Hex.toHexString(key.getPubKey()));
        System.out.println("Sender is\t\t: " + Hex.toHexString(key.getAddress()));


        Assert.assertEquals("cd2a3d9f938e13cd947ec05abc7fe734df8dd826",
                Hex.toHexString(key.getAddress()));
    }

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Examples of org.ethereum.crypto.ECKey

        return ECKey.recoverFromSignature(signature.v, signature, hash, true);
    }


    public byte[] getSender() {
    try {
      ECKey key = ECKey.signatureToKey(getHash(), getSignature().toBase64());
      return key.getAddress();
    } catch (SignatureException e) {
      logger.error(e.getMessage(), e);
    }
    return null;
    }

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Examples of org.ethereum.crypto.ECKey

    return null;
    }


    public void sign(byte[] privKeyBytes) throws MissingPrivateKeyException {
        byte[] hash = this.getHash();
        ECKey key = ECKey.fromPrivate(privKeyBytes).decompress();
        this.signature = key.sign(hash);
        this.rlpEncoded = null;
    }

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Examples of org.ethereum.crypto.ECKey

    @Test   // Testing account for simple balance set
    public void accountTest_1(){


        Repository repository = worldManager.getRepository();


        ECKey cowKey = ECKey.fromPrivate(HashUtil.sha3("cow".getBytes()));
        repository.createAccount(cowKey.getAddress());
        repository.addBalance(cowKey.getAddress(), BigInteger.TEN);


        Wallet wallet = new Wallet();
        wallet.setWorldManager(worldManager);


        wallet.importKey(cowKey.getPrivKeyBytes());


        BigInteger walletBalance = wallet.getBalance(cowKey.getAddress());
        Assert.assertEquals(BigInteger.TEN, walletBalance);


    }

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Examples of org.ethereum.crypto.ECKey

    @Test  // test account balance with pending "unblocked" transaction
    public void accountTest_2(){


        Repository repository = worldManager.getRepository();


        ECKey cowKey = ECKey.fromPrivate(HashUtil.sha3("cow".getBytes()));
        repository.createAccount(cowKey.getAddress());
        repository.addBalance(cowKey.getAddress(), BigInteger.TEN);


        Wallet wallet = new Wallet();
        wallet.setWorldManager(worldManager);


        wallet.importKey(cowKey.getPrivKeyBytes());


        Transaction tx = new Transaction(
                new byte[]{},
                Hex.decode("09184E72A000"),
                Hex.decode("03E8"),
                cowKey.getAddress(),
                Hex.decode("0A"),
                new byte[]{}
        );


        ECKey catKey = ECKey.fromPrivate(HashUtil.sha3("cat".getBytes()));
        tx.sign(catKey.getPrivKeyBytes());


        wallet.applyTransaction(tx);


        BigInteger walletBalance = wallet.getBalance(cowKey.getAddress());
        Assert.assertEquals(BigInteger.valueOf(20), walletBalance);

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Examples of org.ethereum.crypto.ECKey

    public void testSave1() throws TransformerException, ParserConfigurationException {


        Wallet wallet = new Wallet();
        wallet.setWorldManager(worldManager);


    ECKey cowKey = ECKey.fromPrivate(HashUtil.sha3("cow".getBytes()));
    ECKey catKey = ECKey.fromPrivate(HashUtil.sha3("cat".getBytes()));


        wallet.importKey(cowKey.getPrivKeyBytes());
        wallet.importKey(catKey.getPrivKeyBytes());


        wallet.setHigh(4354);


        wallet.save();
    }

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