Example usage for org.bouncycastle.crypto.engines IESEngine getMac

Introduction

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

Prototype

public Mac getMac() 

Source Link

Usage

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

License:Open Source License

/**
 * //from  w w  w.  j a v a 2 s .  co  m
 * @param priKey
 * @param pubKey
 * @param passphrase
 * @param data
 * @return
 * @throws InvalidCipherTextException
 */
public static byte[] encryptKey(CipherParameters priKey, CipherParameters pubKey, String passphrase,
        byte[] data) throws InvalidCipherTextException {
    /* Initialize IESEngine in stream mode */
    IESEngine engine = new IESEngine(new ECDHCBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()),
            new HMac(new SHA256Digest()));

    /* Set the IESEngine cipher parameters as the passphrase and passphrase reversed */
    IESParameters param = new IESParameters(passphrase.getBytes(),
            new StringBuilder(passphrase).reverse().toString().getBytes(), engine.getMac().getMacSize() * 8);

    /* Initialize the engine and encrypt the key */
    engine.init(true, priKey, pubKey, param);
    return engine.processBlock(data, 0, data.length);
}

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

License:Open Source License

/**
 * /*  w  w w. j  a v a 2 s  . com*/
 * @param priKey
 * @param pubKey
 * @param passphrase
 * @param data
 * @return
 * @throws InvalidCipherTextException
 */
public static byte[] decryptKey(CipherParameters priKey, CipherParameters pubKey, String passphrase,
        byte[] data) throws InvalidCipherTextException {
    /* IESEngine in stream mode */
    IESEngine engine = new IESEngine(new ECDHCBasicAgreement(), new KDF2BytesGenerator(new SHA256Digest()),
            new HMac(new SHA256Digest()));

    /* Set the IESEngine cipher parameters as the passphrase and passphrase reversed */
    IESParameters param = new IESParameters(passphrase.getBytes(),
            new StringBuilder(passphrase).reverse().toString().getBytes(), engine.getMac().getMacSize() * 8);

    /* Initialize the engine and decrypt the key */
    engine.init(false, priKey, pubKey, param);
    return engine.processBlock(data, 0, data.length);
}

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