Example usage for org.bouncycastle.crypto.engines EthereumIESEngine init

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.engines EthereumIESEngine init.

Prototype

public void init(boolean forEncryption, CipherParameters privParam, CipherParameters pubParam,
        CipherParameters params) 

Source Link

Document

Initialise the encryptor.

Usage

From source file:org.ethereum.crypto.ECIESCoder.java

License:Open Source License

public static byte[] decrypt(ECPoint ephem, BigInteger prv, byte[] iv, byte[] cipher, byte[] macData)
        throws InvalidCipherTextException {
    AESEngine aesEngine = new AESEngine();

    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(),
            new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] {};
    byte[] e = new byte[] {};

    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, iv);

    iesEngine.init(false, new ECPrivateKeyParameters(prv, CURVE), new ECPublicKeyParameters(ephem, CURVE),
            parametersWithIV);/*from   w w  w . j  a  v  a2 s  .  co m*/

    return iesEngine.processBlock(cipher, 0, cipher.length, macData);
}

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From source file:org.ethereum.crypto.ECIESCoder.java

License:Open Source License

private static EthereumIESEngine makeIESEngine(boolean isEncrypt, ECPoint pub, BigInteger prv, byte[] iv) {
    AESEngine aesEngine = new AESEngine();

    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(),
            new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] {};
    byte[] e = new byte[] {};

    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, iv);

    iesEngine.init(isEncrypt, new ECPrivateKeyParameters(prv, CURVE), new ECPublicKeyParameters(pub, CURVE),
            parametersWithIV);//www  . ja v a 2 s. c om
    return iesEngine;
}

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From source file:org.ethereum.crypto.ECIESTest.java

License:Open Source License

private static EthereumIESEngine makeIESEngine(boolean isEncrypt, ECPoint pub, BigInteger prv, byte[] IV) {
    AESEngine aesEngine = new AESEngine();

    EthereumIESEngine iesEngine = new EthereumIESEngine(new ECDHBasicAgreement(),
            new ConcatKDFBytesGenerator(new SHA256Digest()), new HMac(new SHA256Digest()), new SHA256Digest(),
            new BufferedBlockCipher(new SICBlockCipher(aesEngine)));

    byte[] d = new byte[] {};
    byte[] e = new byte[] {};

    IESParameters p = new IESWithCipherParameters(d, e, KEY_SIZE, KEY_SIZE);
    ParametersWithIV parametersWithIV = new ParametersWithIV(p, IV);

    iesEngine.init(isEncrypt, new ECPrivateKeyParameters(prv, curve), new ECPublicKeyParameters(pub, curve),
            parametersWithIV);//from w  w w  . jav a2 s .  c om
    return iesEngine;
}

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