Java Code Examples for org.bouncycastle.crypto.signers.ECDSASigner#verifySignature()

The following examples show how to use org.bouncycastle.crypto.signers.ECDSASigner#verifySignature() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SECP256K1.java    From besu with Apache License 2.0 6 votes vote down vote up 
private static boolean verifyDefault(
    final Bytes data, final Signature signature, final PublicKey pub) {
  final ECDSASigner signer = new ECDSASigner();
  final Bytes toDecode = Bytes.wrap(Bytes.of((byte) 4), pub.getEncodedBytes());
  final ECPublicKeyParameters params =
      new ECPublicKeyParameters(CURVE.getCurve().decodePoint(toDecode.toArrayUnsafe()), CURVE);
  signer.init(false, params);
  try {
    return signer.verifySignature(data.toArrayUnsafe(), signature.r, signature.s);
  } catch (final NullPointerException e) {
    // Bouncy Castle contains a bug that can cause NPEs given specially crafted signatures. Those
    // signatures
    // are inherently invalid/attack sigs so we just fail them here rather than crash the thread.
    return false;
  }
}
Example 2
Source File: BouncyCastleCrypto.java    From fabric-api-archive with Apache License 2.0 6 votes vote down vote up 
@Override
public boolean verify(byte[] hash, byte[] signature, byte[] publicKey) {
    ASN1InputStream asn1 = new ASN1InputStream(signature);
    try {
        ECDSASigner signer = new ECDSASigner();
        signer.init(false, new ECPublicKeyParameters(curve.getCurve().decodePoint(publicKey), domain));

        DLSequence seq = (DLSequence) asn1.readObject();
        BigInteger r = ((ASN1Integer) seq.getObjectAt(0)).getPositiveValue();
        BigInteger s = ((ASN1Integer) seq.getObjectAt(1)).getPositiveValue();
        return signer.verifySignature(hash, r, s);
    } catch (Exception e) {
        return false;
    } finally {
        try {
            asn1.close();
        } catch (IOException ignored) {
        }
    }
}
Example 3
Source File: BouncyCastleCrypto.java    From fabric-api with Apache License 2.0 6 votes vote down vote up 
@Override
public boolean verify(byte[] hash, byte[] signature, byte[] publicKey) {
    ASN1InputStream asn1 = new ASN1InputStream(signature);
    try {
        ECDSASigner signer = new ECDSASigner();
        signer.init(false, new ECPublicKeyParameters(curve.getCurve().decodePoint(publicKey), domain));

        DLSequence seq = (DLSequence) asn1.readObject();
        BigInteger r = ((ASN1Integer) seq.getObjectAt(0)).getPositiveValue();
        BigInteger s = ((ASN1Integer) seq.getObjectAt(1)).getPositiveValue();
        return signer.verifySignature(hash, r, s);
    } catch (Exception e) {
        return false;
    } finally {
        try {
            asn1.close();
        } catch (IOException ignored) {
        }
    }
}
Example 4
Source File: SECP256K1.java    From incubator-tuweni with Apache License 2.0 5 votes vote down vote up 
/**
 * Verifies the given ECDSA signature against the message bytes using the public key bytes.
 *
 * @param hash The keccak256 hash of the data to verify.
 * @param signature The signature.
 * @param publicKey The public key.
 * @return True if the verification is successful.
 */
public static boolean verifyHashed(byte[] hash, Signature signature, PublicKey publicKey) {
  ECDSASigner signer = new ECDSASigner();
  Bytes toDecode = Bytes.wrap(Bytes.of((byte) 4), publicKey.bytes());
  ECPublicKeyParameters params =
      new ECPublicKeyParameters(Parameters.CURVE.getCurve().decodePoint(toDecode.toArray()), Parameters.CURVE);
  signer.init(false, params);
  try {
    return signer.verifySignature(hash, signature.r, signature.s);
  } catch (NullPointerException e) {
    // Bouncy Castle contains a bug that can cause NPEs given specially crafted signatures. Those signatures
    // are inherently invalid/attack sigs so we just fail them here rather than crash the thread.
    return false;
  }
}
Example 5
Source File: ECKey.java    From javasdk with GNU Lesser General Public License v3.0 5 votes vote down vote up 
/**
 * <p>Verifies the given ECDSA signature against the message bytes using the public key bytes.</p>
 * <p>
 * <p>When using native ECDSA verification, data must be 32 bytes, and no element may be
 * larger than 520 bytes.</p>
 *
 * @param data      Hash of the data to verify.
 * @param signature signature.
 * @param pub       The public key bytes to use.
 * @return -
 */
public static boolean verify(byte[] data, ECDSASignature signature, byte[] pub) {
    ECDSASigner signer = new ECDSASigner();
    ECPublicKeyParameters params = new ECPublicKeyParameters(CURVE.getCurve().decodePoint(pub), CURVE);
    signer.init(false, params);
    try {
        return signer.verifySignature(data, signature.r, signature.s);
    } catch (NullPointerException npe) {
        // Bouncy Castle contains a bug that can cause NPEs given specially crafted signatures.
        // Those signatures are inherently invalid/attack sigs so we just fail them here rather than crash the thread.
        logger.error("Caught NPE inside bouncy castle, " + npe);
        return false;
    }
}
Example 6
Source File: SECP256K1.java    From cava with Apache License 2.0 5 votes vote down vote up 
/**
 * Verifies the given ECDSA signature against the message bytes using the public key bytes.
 *
 * @param hash The keccak256 hash of the data to verify.
 * @param signature The signature.
 * @param publicKey The public key.
 * @return True if the verification is successful.
 */
public static boolean verifyHashed(byte[] hash, Signature signature, PublicKey publicKey) {
  ECDSASigner signer = new ECDSASigner();
  Bytes toDecode = Bytes.wrap(Bytes.of((byte) 4), publicKey.bytes());
  ECPublicKeyParameters params =
      new ECPublicKeyParameters(Parameters.CURVE.getCurve().decodePoint(toDecode.toArray()), Parameters.CURVE);
  signer.init(false, params);
  try {
    return signer.verifySignature(hash, signature.r, signature.s);
  } catch (NullPointerException e) {
    // Bouncy Castle contains a bug that can cause NPEs given specially crafted signatures. Those signatures
    // are inherently invalid/attack sigs so we just fail them here rather than crash the thread.
    return false;
  }
}
Example 7
Source File: ECKey.java    From nuls-v2 with MIT License 5 votes vote down vote up 
/**
 * <p>Verifies the given ECDSA signature against the message bytes using the public key bytes.</p>
 *
 * <p>When using native ECDSA verification, data must be 32 bytes, and no element may be
 * larger than 520 bytes.</p>
 *
 * @param data      Hash of the data to verify.
 * @param signature ASN.1 encoded signature.
 * @param pub       The public key bytes to use.
 */
public static boolean verify(byte[] data, ECDSASignature signature, byte[] pub) {
    ECDSASigner signer = new ECDSASigner();
    ECPublicKeyParameters params = new ECPublicKeyParameters(CURVE.getCurve().decodePoint(pub), CURVE);
    signer.init(false, params);
    try {
        return signer.verifySignature(data, signature.r, signature.s);
    } catch (NullPointerException e) {
        log.error("Caught NPE inside bouncy castle", e);
        return false;
    }
}
Example 8
Source File: K256KeyPair.java    From jingtum-lib-java with MIT License 5 votes vote down vote up 
public static boolean verify(byte[] data, byte[] sigBytes, BigInteger pub) {
	ECDSASignature signature = ECDSASignature.decodeFromDER(sigBytes);
	if (signature == null) {
		return false;
	}
	ECDSASigner signer = new ECDSASigner();
	ECPoint pubPoint = SECP256K1.curve().decodePoint(pub.toByteArray());
	ECPublicKeyParameters params = new ECPublicKeyParameters(pubPoint, SECP256K1.params());
	signer.init(false, params);
	return signer.verifySignature(data, signature.r, signature.s);
}
Example 9
Source File: ECKeyPair.java    From web3sdk with Apache License 2.0 5 votes vote down vote up 
/**
 * Verify a hash with the private key of this key pair.
 *
 * @param hash
 * @param signature
 * @return
 */
public boolean verify(byte[] hash, ECDSASignature signature) {
    ECDSASigner signer = new ECDSASigner();
    // not for signing...
    signer.init(
            false,
            new ECPublicKeyParameters(
                    Sign.publicPointFromPrivate(getPrivateKey()), Sign.CURVE));
    return signer.verifySignature(hash, signature.r, signature.s);
}
Example 10
Source File: NamedCurve.java    From UAF with Apache License 2.0 5 votes vote down vote up 
public static boolean verify(byte[] pub, byte[] dataForSigning,
		BigInteger[] rs) throws Exception {
	ECDSASigner signer = new ECDSASigner();
	X9ECParameters params = SECNamedCurves.getByName("secp256r1");
	ECDomainParameters ecParams = new ECDomainParameters(params.getCurve(),
			params.getG(), params.getN(), params.getH());
	ECPublicKeyParameters pubKeyParams = new ECPublicKeyParameters(ecParams
			.getCurve().decodePoint(pub), ecParams);
	signer.init(false, pubKeyParams);

	return signer.verifySignature(dataForSigning, rs[0].abs(), rs[1].abs());
}
Example 11
Source File: NamedCurve.java    From UAF with Apache License 2.0 5 votes vote down vote up 
public static boolean verifyUsingSecp256k1(byte[] pub, byte[] dataForSigning,
		BigInteger[] rs) throws Exception {
	ECDSASigner signer = new ECDSASigner();
	X9ECParameters params = SECNamedCurves.getByName("secp256k1");
	ECDomainParameters ecParams = new ECDomainParameters(params.getCurve(),
			params.getG(), params.getN(), params.getH());
	ECPublicKeyParameters pubKeyParams = new ECPublicKeyParameters(ecParams
			.getCurve().decodePoint(pub), ecParams);
	signer.init(false, pubKeyParams);

	return signer.verifySignature(dataForSigning, rs[0].abs(), rs[1].abs());
}
Example 12
Source File: ECCurvePoint.java    From InflatableDonkey with MIT License 5 votes vote down vote up 
public boolean verifySignature(byte[] message, BigInteger r, BigInteger s) {
    ECDomainParameters ecDomainParameters = ECAssistant.ecDomainParametersFrom(x9ECParameters);
    ECPublicKeyParameters ecPublicKeyParameters = new ECPublicKeyParameters(Q, ecDomainParameters);

    ECDSASigner signer = new ECDSASigner();
    signer.init(false, ecPublicKeyParameters);

    return signer.verifySignature(message, r, s);
}
Example 13
Source File: ECKey.java    From bushido-java-core with GNU General Public License v3.0 5 votes vote down vote up 
public boolean verify(byte[] message, byte[] signature) throws Exception
{
    ASN1InputStream asn1 = new ASN1InputStream(signature);
    ECDSASigner signer = new ECDSASigner();
    //not for signing...
    signer.init(false, new ECPublicKeyParameters(curve.getCurve().decodePoint(pub), params));
    DLSequence seq = (DLSequence) asn1.readObject();
    BigInteger r = ((ASN1Integer) seq.getObjectAt(0)).getPositiveValue();
    BigInteger s = ((ASN1Integer) seq.getObjectAt(1)).getPositiveValue();
    return signer.verifySignature(message, r, s);
}
Example 14
Source File: Signature.java    From evt4j with MIT License 3 votes vote down vote up 
public static boolean verifyHash(byte[] hash, @NotNull Signature signature, @NotNull PublicKey publicKey) {
    checkHashLength(hash);

    ECDSASigner signer = new ECDSASigner(new HMacDSAKCalculator(new SHA256Digest()));

    ECPublicKeyParameters publicKeyParams = new ECPublicKeyParameters(publicKey.getPoint().get(), // ECPoint
            ECKey.CURVE);

    signer.init(false, publicKeyParams);

    return signer.verifySignature(hash, signature.getR(), signature.getS());
}