List of usage examples for org.bouncycastle.crypto.parsers ECIESPublicKeyParser ECIESPublicKeyParser
public ECIESPublicKeyParser(ECDomainParameters ecParams)
From source file:org.ethereum.crypto.CryptoTest.java
License:Open Source License
@Test // ECIES_AES128_SHA256 + Ephemeral Key + IV(all zeroes) public void test15() throws Throwable { byte[] privKey = Hex.decode("a4627abc2a3c25315bff732cb22bc128f203912dd2a840f31e66efb27a47d2b1"); ECKey ecKey = ECKey.fromPrivate(privKey); ECPrivateKeyParameters ecPrivKey = new ECPrivateKeyParameters(ecKey.getPrivKey(), ECKey.CURVE); ECPublicKeyParameters ecPubKey = new ECPublicKeyParameters(ecKey.getPubKeyPoint(), ECKey.CURVE); AsymmetricCipherKeyPair myKey = new AsymmetricCipherKeyPair(ecPubKey, ecPrivKey); AESEngine aesEngine = new AESEngine(); IESEngine iesEngine = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new BufferedBlockCipher(new SICBlockCipher(aesEngine))); byte[] d = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 }; byte[] e = new byte[] { 8, 7, 6, 5, 4, 3, 2, 1 }; IESParameters p = new IESWithCipherParameters(d, e, 64, 128); ParametersWithIV parametersWithIV = new ParametersWithIV(p, new byte[16]); ECKeyPairGenerator eGen = new ECKeyPairGenerator(); KeyGenerationParameters gParam = new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom()); eGen.init(gParam);/*w w w . ja va 2 s.co m*/ ECKeyGenerationParameters keygenParams = new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom()); ECKeyPairGenerator generator = new ECKeyPairGenerator(); generator.init(keygenParams); EphemeralKeyPairGenerator kGen = new EphemeralKeyPairGenerator(generator, new KeyEncoder() { public byte[] getEncoded(AsymmetricKeyParameter keyParameter) { return ((ECPublicKeyParameters) keyParameter).getQ().getEncoded(); } }); ECKeyPairGenerator gen = new ECKeyPairGenerator(); gen.init(new ECKeyGenerationParameters(ECKey.CURVE, new SecureRandom())); iesEngine.init(myKey.getPublic(), parametersWithIV, kGen); byte[] message = Hex.decode("010101"); log.info("payload: {}", Hex.toHexString(message)); byte[] cipher = iesEngine.processBlock(message, 0, message.length); log.info("cipher: {}", Hex.toHexString(cipher)); IESEngine decryptorIES_Engine = new IESEngine(new ECDHBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new BufferedBlockCipher(new SICBlockCipher(aesEngine))); decryptorIES_Engine.init(myKey.getPrivate(), parametersWithIV, new ECIESPublicKeyParser(ECKey.CURVE)); byte[] orig = decryptorIES_Engine.processBlock(cipher, 0, cipher.length); log.info("orig: " + Hex.toHexString(orig)); }
From source file:org.ethereum.crypto.ECIESCoder.java
License:Open Source License
/** * Encryption equivalent to the Crypto++ default ECIES<ECP> settings: * * DL_KeyAgreementAlgorithm: DL_KeyAgreementAlgorithm_DH<struct ECPPoint,struct EnumToType<enum CofactorMultiplicationOption,0> > * DL_KeyDerivationAlgorithm: DL_KeyDerivationAlgorithm_P1363<struct ECPPoint,0,class P1363_KDF2<class SHA1> > * DL_SymmetricEncryptionAlgorithm: DL_EncryptionAlgorithm_Xor<class HMAC<class SHA1>,0> * DL_PrivateKey: DL_Key<ECPPoint> * DL_PrivateKey_EC<class ECP>//from w w w. ja v a 2 s . com * * Used for Whisper V3 */ public static byte[] decryptSimple(BigInteger privKey, byte[] cipher) throws IOException, InvalidCipherTextException { EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(), new MGF1BytesGeneratorExt(new SHA1Digest(), 1), new HMac(new SHA1Digest()), new SHA1Digest(), null); IESParameters p = new IESParameters(null, null, KEY_SIZE); ParametersWithIV parametersWithIV = new ParametersWithIV(p, new byte[0]); iesEngine.setHashMacKey(false); iesEngine.init(new ECPrivateKeyParameters(privKey, CURVE), parametersWithIV, new ECIESPublicKeyParser(ECKey.CURVE)); return iesEngine.processBlock(cipher, 0, cipher.length); }