Example usage for org.bouncycastle.crypto.engines RC4Engine RC4Engine

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.engines RC4Engine RC4Engine.

Prototype

RC4Engine

Source Link

Usage

From source file:net.propero.rdp.Licence.java

License:Open Source License

/**
 * Handle a licence issued by the server, save to disk if
 * options.save_licence//from   w  ww .ja v a 2s .c o  m
 *
 * @param data
 *            Packet containing issued licence
 */
public void process_issue(RdpPacket data) {
    int length = 0;
    int check = 0;
    RC4Engine rc4_licence = new RC4Engine();
    byte[] key = new byte[this.licence_key.length];
    System.arraycopy(this.licence_key, 0, key, 0, this.licence_key.length);

    data.incrementPosition(2); // unknown
    length = data.getLittleEndian16();

    if (data.getPosition() + length > data.getEnd()) {
        return;
    }

    rc4_licence.init(false, new KeyParameter(key));
    byte[] buffer = new byte[length];
    data.copyToByteArray(buffer, 0, data.getPosition(), length);
    rc4_licence.processBytes(buffer, 0, length, buffer, 0);
    data.copyFromByteArray(buffer, 0, data.getPosition(), length);

    check = data.getLittleEndian16();
    if (check != 0) {
        // return;
    }
    secure.licenceIssued = true;

    /*
     * data.incrementPosition(2); // in_uint8s(s, 2); // pad
     *  // advance to fourth string length = 0; for (int i = 0; i < 4; i++) {
     * data.incrementPosition(length); // in_uint8s(s, length); length =
     * data.getLittleEndian32(length); // in_uint32_le(s, length); if
     * (!(data.getPosition() + length <= data.getEnd())) return; }
     */

    secure.licenceIssued = true;
    LOGGER.debug("Server issued Licence");
    if (options.save_licence) {
        save_licence(data, length - 2);
    }
}

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From source file:net.propero.rdp.Secure.java

License:Open Source License

/**
 * Initialise Secure layer of communications
 *
 * @param channels//w w w.j  a va 2s  . c  om
 *            Virtual channels for this connection
 * @param options
 *            The options instance
 */
public Secure(VChannels channels, Options options, Rdp rdp) {
    this.channels = channels;
    this.options = options;
    this.licence = new Licence(options, this);
    McsLayer = new MCS(options, channels, this, rdp);
    rc4_dec = new RC4Engine();
    rc4_enc = new RC4Engine();
    rc4_update = new RC4Engine();
    sha1 = new SHA1Digest();
    md5 = new MD5Digest();
    sec_sign_key = new byte[16]; // changed from 8 - rdesktop 1.2.0
    sec_decrypt_key = new byte[16];
    sec_encrypt_key = new byte[16];
    sec_decrypt_update_key = new byte[16]; // changed from 8 - rdesktop
    // 1.2.0
    sec_encrypt_update_key = new byte[16]; // changed from 8 - rdesktop
    // 1.2.0
    sec_crypted_random = new byte[64];

}

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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  a  v  a2 s .com*/
    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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From source file:org.sejda.sambox.encryption.ARC4Engine.java

License:Apache License

public ARC4Engine() {
    cipher = new RC4Engine();
}

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From source file:rpc.security.ntlm.NTLMKeyFactory.java

License:Open Source License

StreamCipher getARCFOUR(byte[] key) {
    HashMap attrib = new HashMap();
    //      IRandom keystream = new ARCFour();
    //      attrib.put(ARCFour.ARCFOUR_KEY_MATERIAL, key);
    //      keystream.init(attrib);
    StreamCipher keystream = new RC4Engine();
    CipherParameters params = new KeyParameter(key);
    keystream.init(true, params);//from  w ww  . j  a  v  a 2  s .co m
    return keystream;
}

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