Examples of org.ethereum.crypto.ECKey.verify()

org.ethereum.crypto.ECKey.verify()

Verifies the given ECDSA signature against the message bytes using the public key bytes.

When using native ECDSA verification, data must be 32 bytes, and no element may be larger than 520 bytes.
@param data Hash of the data to verify. @param signature signature. @param pub The public key bytes to use.

    public void testVerifySignature1() {
      ECKey key = ECKey.fromPublicOnly(pubKey);
        BigInteger r = new BigInteger("28157690258821599598544026901946453245423343069728565040002908283498585537001");
        BigInteger s = new BigInteger("30212485197630673222315826773656074299979444367665131281281249560925428307087");
        ECDSASignature sig = ECDSASignature.fromComponents(r.toByteArray(), s.toByteArray(), (byte) 28);
        key.verify(HashUtil.sha3(exampleMessage.getBytes()), sig);
    }
    
    @Test
    public void testVerifySignature2() {
        BigInteger r = new BigInteger("c52c114d4f5a3ba904a9b3036e5e118fe0dbb987fe3955da20f2cd8f6c21ab9c", 16);

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    try {
      ECKey key = ECKey.signatureToKey(HashUtil.sha3(rawtx), sig.toBase64());
      System.out.println("Signature public key\t: " + Hex.toHexString(key.getPubKey()));
      System.out.println("Sender is\t\t: " + Hex.toHexString(key.getAddress()));
      assertEquals("cd2a3d9f938e13cd947ec05abc7fe734df8dd826", Hex.toHexString(key.getAddress()));
      key.verify(HashUtil.sha3(rawtx), sig);
    } catch (SignatureException e) {
      fail();
    }
    }

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    @Test
    public void testSignVerify() {
      ECKey key = ECKey.fromPrivate(privateKey);
      String message = new String("This is an example of a signed message.");
      ECDSASignature output = key.doSign(message.getBytes());
      assertTrue(key.verify(message.getBytes(), output));
    }
      
  @Test
  public void testIsPubKeyCanonicalCorect() {
    // Test correct prefix 4, right length 65

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