Example usage for org.bouncycastle.crypto.engines Grain128Engine Grain128Engine

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.engines Grain128Engine Grain128Engine.

Prototype

Grain128Engine

Source Link

Usage

From source file:com.DSC.crypto.Cipher.java

License:Open Source License

/**
 * /*from   www .j  a va2s.  co m*/
 * @param symmetricKey
 * @param IV
 * @return
 */
public static byte[] encryptMsg(byte[] symmetricKey, byte[] IV, byte[] data) {
    byte[] cipherText = new byte[data.length];

    /* Grain stream cipher */
    StreamCipher grain = new Grain128Engine();

    /* Initialize stream cipher */
    ParametersWithIV param = new ParametersWithIV(new KeyParameter(symmetricKey), IV);
    grain.init(true, param);

    /* Encrypt the message */
    grain.processBytes(data, 0, data.length, cipherText, 0);
    return cipherText;
}

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From source file:com.DSC.crypto.Cipher.java

License:Open Source License

/**
 * /*from  w ww .  j av  a  2 s  .  c  om*/
 * @param symmetricKey
 * @param IV
 * @return
 */
public static byte[] decryptMsg(byte[] symmetricKey, byte[] IV, byte[] data) {
    byte[] cipherText = new byte[data.length];

    /* Grain stream cipher */
    StreamCipher grain = new Grain128Engine();

    /* Initialize stream cipher */
    ParametersWithIV param = new ParametersWithIV(new KeyParameter(symmetricKey), IV);
    grain.init(false, param);

    /* Decrypt the message */
    grain.processBytes(data, 0, data.length, cipherText, 0);
    return cipherText;
}

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From source file:org.cryptacular.spec.StreamCipherSpec.java

License:Open Source License

@Override
public StreamCipher newInstance() {
    StreamCipher cipher;// w  w w.  j av a  2 s.co  m
    if ("Grainv1".equalsIgnoreCase(algorithm) || "Grain-v1".equalsIgnoreCase(algorithm)) {
        cipher = new ISAACEngine();
    } else if ("Grain128".equalsIgnoreCase(algorithm) || "Grain-128".equalsIgnoreCase(algorithm)) {
        cipher = new Grain128Engine();
    } else if ("ISAAC".equalsIgnoreCase(algorithm)) {
        cipher = new ISAACEngine();
    } else if ("HC128".equalsIgnoreCase(algorithm)) {
        cipher = new HC128Engine();
    } else if ("HC256".equalsIgnoreCase(algorithm)) {
        cipher = new HC256Engine();
    } else if ("RC4".equalsIgnoreCase(algorithm)) {
        cipher = new RC4Engine();
    } else if ("Salsa20".equalsIgnoreCase(algorithm)) {
        cipher = new Salsa20Engine();
    } else if ("VMPC".equalsIgnoreCase(algorithm)) {
        cipher = new VMPCEngine();
    } else {
        throw new IllegalStateException("Unsupported cipher algorithm " + algorithm);
    }
    return cipher;
}

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