org.bouncycastle.crypto.params.ECKeyGenerationParameters Java Examples

The following examples show how to use org.bouncycastle.crypto.params.ECKeyGenerationParameters. 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: 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;
}

Example #2

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;
}

Example #3

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();
}

Example #4

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();
}

Example #5

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));
}

Example #6

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();
}

Example #7

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();
}

Example #8

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();
}

Example #9

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();
}

Example #10

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);
}

Example #11

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();
}

Example #12

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;
}

Example #13

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;
}

Example #14

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;
}