org.bouncycastle.crypto.params.IESWithCipherParameters Java Examples

The following examples show how to use org.bouncycastle.crypto.params.IESWithCipherParameters. 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: RLPxConnectionFactory.java    From incubator-tuweni with Apache License 2.0 5 votes vote down vote up 
private static EthereumIESEncryptionEngine forDecryption(
    SecretKey privateKey,
    PublicKey ephemeralPublicKey,
    Bytes iv,
    Bytes commonMac) {
  CipherParameters pubParam = new ECPublicKeyParameters(ephemeralPublicKey.asEcPoint(), CURVE);
  CipherParameters privParam = new ECPrivateKeyParameters(privateKey.bytes().toUnsignedBigInteger(), CURVE);

  BasicAgreement agreement = new ECDHBasicAgreement();
  agreement.init(privParam);
  byte[] agreementValue =
      BigIntegers.asUnsignedByteArray(agreement.getFieldSize(), agreement.calculateAgreement(pubParam));

  IESWithCipherParameters iesWithCipherParameters = new IESWithCipherParameters(new byte[0], new byte[0], 128, 128);

  EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction kdf =
      new EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction(1, new SHA256Digest());
  kdf.init(new KDFParameters(agreementValue, iesWithCipherParameters.getDerivationV()));
  EthereumIESEncryptionEngine engine = new EthereumIESEncryptionEngine(
      agreement,
      kdf,
      new HMac(new SHA256Digest()),
      commonMac.toArrayUnsafe(),
      new BufferedBlockCipher(new SICBlockCipher(new AESEngine())));
  ParametersWithIV cipherParameters = new ParametersWithIV(iesWithCipherParameters, iv.toArrayUnsafe());
  engine.init(false, privParam, pubParam, cipherParameters);
  return engine;
}
Example #2
Source File: RLPxConnectionFactory.java    From cava with Apache License 2.0 5 votes vote down vote up 
private static EthereumIESEncryptionEngine forEncryption(
    PublicKey pubKey,
    Bytes iv,
    Bytes commonMac,
    KeyPair ephemeralKeyPair) {
  CipherParameters pubParam = new ECPublicKeyParameters(pubKey.asEcPoint(), CURVE);
  CipherParameters privParam =
      new ECPrivateKeyParameters(ephemeralKeyPair.secretKey().bytes().toUnsignedBigInteger(), CURVE);

  BasicAgreement agree = new ECDHBasicAgreement();
  agree.init(privParam);
  BigInteger z = agree.calculateAgreement(pubParam);
  byte[] zbytes = BigIntegers.asUnsignedByteArray(agree.getFieldSize(), z);

  IESWithCipherParameters iesWithCipherParameters = new IESWithCipherParameters(new byte[0], new byte[0], 128, 128);

  // Initialise the KDF.
  EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction kdf =
      new EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction(1, new SHA256Digest());
  kdf.init(new KDFParameters(zbytes, iesWithCipherParameters.getDerivationV()));
  EthereumIESEncryptionEngine engine = new EthereumIESEncryptionEngine(
      agree,
      kdf,
      new HMac(new SHA256Digest()),
      commonMac.toArrayUnsafe(),
      new BufferedBlockCipher(new SICBlockCipher(new AESEngine())));
  ParametersWithIV cipherParameters = new ParametersWithIV(iesWithCipherParameters, iv.toArrayUnsafe());
  engine.init(true, privParam, pubParam, cipherParameters);

  return engine;
}
Example #3
Source File: RLPxConnectionFactory.java    From cava with Apache License 2.0 5 votes vote down vote up 
private static EthereumIESEncryptionEngine forDecryption(
    SecretKey privateKey,
    PublicKey ephemeralPublicKey,
    Bytes iv,
    Bytes commonMac) {
  CipherParameters pubParam = new ECPublicKeyParameters(ephemeralPublicKey.asEcPoint(), CURVE);
  CipherParameters privParam = new ECPrivateKeyParameters(privateKey.bytes().toUnsignedBigInteger(), CURVE);

  BasicAgreement agreement = new ECDHBasicAgreement();
  agreement.init(privParam);
  byte[] agreementValue =
      BigIntegers.asUnsignedByteArray(agreement.getFieldSize(), agreement.calculateAgreement(pubParam));

  IESWithCipherParameters iesWithCipherParameters = new IESWithCipherParameters(new byte[0], new byte[0], 128, 128);

  EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction kdf =
      new EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction(1, new SHA256Digest());
  kdf.init(new KDFParameters(agreementValue, iesWithCipherParameters.getDerivationV()));
  EthereumIESEncryptionEngine engine = new EthereumIESEncryptionEngine(
      agreement,
      kdf,
      new HMac(new SHA256Digest()),
      commonMac.toArrayUnsafe(),
      new BufferedBlockCipher(new SICBlockCipher(new AESEngine())));
  ParametersWithIV cipherParameters = new ParametersWithIV(iesWithCipherParameters, iv.toArrayUnsafe());
  engine.init(false, privParam, pubParam, cipherParameters);
  return engine;
}
Example #4
Source File: RLPxConnectionFactory.java    From incubator-tuweni with Apache License 2.0 4 votes vote down vote up 
private static EthereumIESEncryptionEngine forEncryption(
    PublicKey pubKey,
    Bytes iv,
    Bytes commonMac,
    KeyPair ephemeralKeyPair) {
  CipherParameters pubParam = new ECPublicKeyParameters(pubKey.asEcPoint(), CURVE);
  CipherParameters privParam =
      new ECPrivateKeyParameters(ephemeralKeyPair.secretKey().bytes().toUnsignedBigInteger(), CURVE);

  BasicAgreement agree = new ECDHBasicAgreement();
  agree.init(privParam);
  BigInteger z = agree.calculateAgreement(pubParam);
  byte[] zbytes = BigIntegers.asUnsignedByteArray(agree.getFieldSize(), z);

  IESWithCipherParameters iesWithCipherParameters = new IESWithCipherParameters(new byte[0], new byte[0], 128, 128);

  // Initialise the KDF.
  EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction kdf =
      new EthereumIESEncryptionEngine.ECIESHandshakeKDFFunction(1, new SHA256Digest());
  kdf.init(new KDFParameters(zbytes, iesWithCipherParameters.getDerivationV()));
  EthereumIESEncryptionEngine engine = new EthereumIESEncryptionEngine(
      agree,
      kdf,
      new HMac(new SHA256Digest()),
      commonMac.toArrayUnsafe(),
      new BufferedBlockCipher(new SICBlockCipher(new AESEngine())));
  ParametersWithIV cipherParameters = new ParametersWithIV(iesWithCipherParameters, iv.toArrayUnsafe());
  engine.init(true, privParam, pubParam, cipherParameters);

  return engine;
}