org.bouncycastle.crypto.params.ECKeyGenerationParameters Java Exaples

Source File: TransactionUtil.java From chain33-sdk-java with BSD 2-Clause "Simplified" License

6 votes

/**
 * @description 创建私钥和公钥
 * 
 * @return 私钥
 */
public static byte[] generatorPrivateKey() {
	int length = 0;
	byte[] privateKey;
	do {
		ECKeyPairGenerator gen = new ECKeyPairGenerator();
		SecureRandom secureRandom = new SecureRandom();
		X9ECParameters secnamecurves = SECNamedCurves.getByName("secp256k1");
		ECDomainParameters ecParams = new ECDomainParameters(secnamecurves.getCurve(), secnamecurves.getG(),
				secnamecurves.getN(), secnamecurves.getH());
		ECKeyGenerationParameters keyGenParam = new ECKeyGenerationParameters(ecParams, secureRandom);
		gen.init(keyGenParam);
		AsymmetricCipherKeyPair kp = gen.generateKeyPair();
		ECPrivateKeyParameters privatekey = (ECPrivateKeyParameters) kp.getPrivate();
		privateKey = privatekey.getD().toByteArray();
		length = privatekey.getD().toByteArray().length;
	} while (length != 32);
	return privateKey;
}

Source File: LocalIdentity.java From ts3j with Apache License 2.0

6 votes

/**
 * Generates a new identity with a given security level target.
 * @param securityLevel security level to generate for (may take time)
 * @return local identity with given security level
 * @throws GeneralSecurityException
 */
public static LocalIdentity generateNew(int securityLevel) throws GeneralSecurityException {
    ECNamedCurveParameterSpec ecp = ECNamedCurveTable.getParameterSpec("prime256v1");
    ECDomainParameters domainParams =
            new ECDomainParameters(ecp.getCurve(), ecp.getG(), ecp.getN(), ecp.getH(), ecp.getSeed());
    ECKeyGenerationParameters keyGenParams = new ECKeyGenerationParameters(domainParams, new SecureRandom());

    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    generator.init(keyGenParams);

    AsymmetricCipherKeyPair keyPair = generator.generateKeyPair();
    ECPrivateKeyParameters privateKey = (ECPrivateKeyParameters) keyPair.getPrivate();
    ECPublicKeyParameters publicKey = (ECPublicKeyParameters) keyPair.getPublic();

    LocalIdentity localIdentity = load(publicKey.getQ().normalize(), privateKey.getD());
    localIdentity.improveSecurity(securityLevel);

    return localIdentity;
}

Source File: SM2Util.java From javasdk with GNU Lesser General Public License v3.0

5 votes

/**
 * create a random key pair of sm.
 *
 * @return String array of publicKey and privateKey
 */
public static AsymmetricCipherKeyPair generateKeyPair() {
    SecureRandom random = new SecureRandom();
    ECKeyGenerationParameters keyGenerationParams = new ECKeyGenerationParameters(DOMAIN_PARAMS, random);
    ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
    keyGen.init(keyGenerationParams);
    return keyGen.generateKeyPair();
}

Source File: BCECUtil.java From gmhelper with Apache License 2.0

5 votes

/**
 * 生成ECC密钥对
 *
 * @return ECC密钥对
 */
public static AsymmetricCipherKeyPair generateKeyPairParameter(
        ECDomainParameters domainParameters, SecureRandom random) {
    ECKeyGenerationParameters keyGenerationParams = new ECKeyGenerationParameters(domainParameters,
            random);
    ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
    keyGen.init(keyGenerationParams);
    return keyGen.generateKeyPair();
}

Source File: Sm2KeyPairImpl.java From littleca with Apache License 2.0

5 votes

public Sm2KeyPairImpl(boolean selfgen) {
	SecureRandom random = new SecureRandom();
	ECKeyGenerationParameters keyGenerationParams = new ECKeyGenerationParameters(DOMAIN_PARAMS, random);
	ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
	keyGen.init(keyGenerationParams);
	AsymmetricCipherKeyPair keyPair = keyGen.generateKeyPair();
	ECPrivateKeyParameters priKey = (ECPrivateKeyParameters) keyPair.getPrivate();
	ECPublicKeyParameters pubKey = (ECPublicKeyParameters) keyPair.getPublic();
	ECDomainParameters domainParams = priKey.getParameters();
	ECParameterSpec spec = new ECParameterSpec(domainParams.getCurve(), domainParams.getG(), domainParams.getN(),
			domainParams.getH());
	BCECPublicKey bcecPublicKey = new BCECPublicKey(ALGO_NAME_EC, pubKey, spec, BouncyCastleProvider.CONFIGURATION);
	publicKey = new Sm2PublicKeyImpl(bcecPublicKey);
	privateKey = new Sm2PrivateKeyImpl(new BCECPrivateKey(ALGO_NAME_EC, priKey, bcecPublicKey, spec, BouncyCastleProvider.CONFIGURATION));
}

Source File: BCECUtil.java From littleca with Apache License 2.0

5 votes

/**
 * 生成ECC密钥对
 *
 * @return ECC密钥对
 */
public static AsymmetricCipherKeyPair generateKeyPair(ECDomainParameters domainParameters,
                                                      SecureRandom random) {
    ECKeyGenerationParameters keyGenerationParams = new ECKeyGenerationParameters(domainParameters,
        random);
    ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
    keyGen.init(keyGenerationParams);
    return keyGen.generateKeyPair();
}

Source File: ECKey.java From nuls-v2 with MIT License

5 votes

/**
 * Generates an entirely new keypair with the given {@link SecureRandom} object. Point compression is used so the
 * resulting public key will be 33 bytes (32 for the co-ordinate and 1 byte to represent the y bit).
 */
public ECKey(SecureRandom secureRandom) {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(CURVE, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic();
    priv = privParams.getD();
    pub = new LazyECPoint(CURVE.getCurve(), pubParams.getQ().getEncoded(true));
    creationTimeSeconds = System.currentTimeMillis();
}

Source File: BouncyCastleCrypto.java From fabric-api-archive with Apache License 2.0

5 votes

@Override
public byte[] createNewPrivateKey() {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(domain, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    return privParams.getD().toByteArray();
}

Source File: BouncyCastleCrypto.java From fabric-api with Apache License 2.0

5 votes

@Override
public byte[] createNewPrivateKey() {
    ECKeyPairGenerator generator = new ECKeyPairGenerator();
    ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(domain, secureRandom);
    generator.init(keygenParams);
    AsymmetricCipherKeyPair keypair = generator.generateKeyPair();
    ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate();
    return privParams.getD().toByteArray();
}

Source File: Sign1MessageTest.java From COSE-JAVA with BSD 3-Clause "New" or "Revised" License

5 votes

@BeforeClass
public static void setUpClass() throws CoseException {

    X9ECParameters p = NISTNamedCurves.getByName("P-256");
    
    ECDomainParameters parameters = new ECDomainParameters(p.getCurve(), p.getG(), p.getN(), p.getH());
    ECKeyPairGenerator pGen = new ECKeyPairGenerator();
    ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(parameters, null);
    pGen.init(genParam);
    
    AsymmetricCipherKeyPair p1 = pGen.generateKeyPair();
    
    keyPublic = (ECPublicKeyParameters) p1.getPublic();
    keyPrivate = (ECPrivateKeyParameters) p1.getPrivate();
    
byte[] rgbX = keyPublic.getQ().normalize().getXCoord().getEncoded();
byte[] rgbY = keyPublic.getQ().normalize().getYCoord().getEncoded();
boolean signY = true;
byte[] rgbD = keyPrivate.getD().toByteArray();

CBORObject key = CBORObject.NewMap();
    key.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2);
    key.Add(KeyKeys.EC2_Curve.AsCBOR(), KeyKeys.EC2_P256);
    key.Add(KeyKeys.EC2_X.AsCBOR(), rgbX);
    key.Add(KeyKeys.EC2_Y.AsCBOR(), rgbY);
    cnKeyPublic = new OneKey(key);
    
    key = CBORObject.NewMap();
    key.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2);
    key.Add(KeyKeys.EC2_Curve.AsCBOR(), KeyKeys.EC2_P256);
    key.Add(KeyKeys.EC2_X.AsCBOR(), rgbX);
    key.Add(KeyKeys.EC2_Y.AsCBOR(), rgbY);
    cnKeyPublicCompressed = new OneKey(key);

    key = CBORObject.NewMap();
    key.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2);
    key.Add(KeyKeys.EC2_Curve.AsCBOR(), KeyKeys.EC2_P256);
    key.Add(KeyKeys.EC2_D.AsCBOR(), rgbD);
    cnKeyPrivate = new OneKey(key);
}

Source File: BCECUtil.java From jiguang-java-client-common with MIT License

5 votes

/**
 * 生成ECC密钥对
 *
 * @return ECC密钥对
 */
public static AsymmetricCipherKeyPair generateKeyPairParameter(ECDomainParameters domainParameters,
    SecureRandom random) {
    ECKeyGenerationParameters keyGenerationParams = new ECKeyGenerationParameters(domainParameters,
        random);
    ECKeyPairGenerator keyGen = new ECKeyPairGenerator();
    keyGen.init(keyGenerationParams);
    return keyGen.generateKeyPair();
}

Source File: ECKeyPair.java From bop-bitcoin-client with Apache License 2.0

5 votes

public static ECKeyPair createNew (boolean compressed)
{
	ECKeyPairGenerator generator = new ECKeyPairGenerator ();
	ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters (domain, secureRandom);
	generator.init (keygenParams);
	AsymmetricCipherKeyPair keypair = generator.generateKeyPair ();
	ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate ();
	ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic ();
	ECKeyPair k = new ECKeyPair ();
	k.priv = privParams.getD ();
	k.compressed = compressed;
	k.pub = pubParams.getQ ().getEncoded (compressed);
	return k;
}

Source File: ECKeyPair.java From WalletCordova with GNU Lesser General Public License v2.1

5 votes

public static ECKeyPair createNew (boolean compressed)
{
	ECKeyPairGenerator generator = new ECKeyPairGenerator ();
	ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters (domain, secureRandom);
	generator.init (keygenParams);
	AsymmetricCipherKeyPair keypair = generator.generateKeyPair ();
	ECPrivateKeyParameters privParams = (ECPrivateKeyParameters) keypair.getPrivate ();
	ECPublicKeyParameters pubParams = (ECPublicKeyParameters) keypair.getPublic ();
	ECKeyPair k = new ECKeyPair ();
	k.priv = privParams.getD ();
	k.compressed = compressed;
	k.pub = pubParams.getQ ().getEncoded (compressed);
	return k;
}

Source File: ECGEN.java From warp10-platform with Apache License 2.0

2 votes

@Override
public Object apply(WarpScriptStack stack) throws WarpScriptException {
  Object top = stack.pop();

  if (!(top instanceof String)) {
    throw new WarpScriptException(getName() + " expects a curve name.");
  }

  String name = (String) top;

  ECKeyPairGenerator gen = new ECKeyPairGenerator();

  ECNamedCurveParameterSpec spec = ECNamedCurveTable.getParameterSpec(name);
  
  if (null == spec) {
    throw new WarpScriptException(getName() + " only supports the following curves: " + getCurves() + ".");
  }
  
  ECCurve curve = spec.getCurve();
  ECDomainParameters domainParams = new ECDomainParameters(curve, spec.getG(),spec.getN(), spec.getH(), spec.getSeed());    
  ECKeyGenerationParameters params = new ECKeyGenerationParameters(domainParams, CryptoHelper.getSecureRandom());
  
  gen.init(params);

  final AsymmetricCipherKeyPair keypair = gen.generateKeyPair();

  ECPrivateKeyParameters privateKey = (ECPrivateKeyParameters) keypair.getPrivate();
  ECPublicKeyParameters publicKey = (ECPublicKeyParameters) keypair.getPublic();
  
  Map<String,String> keyparams = new HashMap<String,String>();
  
  keyparams.put(Constants.KEY_CURVE, name);
  keyparams.put(Constants.KEY_D, privateKey.getD().toString());
  
  stack.push(keyparams);
  
  keyparams = new HashMap<String,String>();

  keyparams.put(Constants.KEY_CURVE, name);
  keyparams.put(Constants.KEY_Q, Hex.encodeHexString(publicKey.getQ().getEncoded()));

  stack.push(keyparams);

  return stack;
}

org.bouncycastle.crypto.params.ECKeyGenerationParameters Java Examples