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

Introduction

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

Prototype

public AESEngine()

Source Link

Document

default constructor - 128 bit block size.

Usage

From source file:dbn.crypto.Crypto.java

public static byte[] aesGCMDecrypt(byte[] ivCiphertext, byte[] key) {
    try {/*from   www .jav a  2  s. c o  m*/
        if (ivCiphertext.length < 16) {
            throw new InvalidCipherTextException("invalid ivCiphertext length");
        }
        byte[] iv = Arrays.copyOfRange(ivCiphertext, 0, 16);
        byte[] ciphertext = Arrays.copyOfRange(ivCiphertext, 16, ivCiphertext.length);
        GCMBlockCipher aes = new GCMBlockCipher(new AESEngine());
        CipherParameters ivAndKey = new ParametersWithIV(new KeyParameter(key), iv);
        aes.init(false, ivAndKey);
        byte[] output = new byte[aes.getOutputSize(ciphertext.length)];
        int plaintextLength = aes.processBytes(ciphertext, 0, ciphertext.length, output, 0);
        plaintextLength += aes.doFinal(output, plaintextLength);
        byte[] result = new byte[plaintextLength];
        System.arraycopy(output, 0, result, 0, result.length);
        return result;
    } catch (InvalidCipherTextException e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}

From source file:de.gs_sys.kp2016.crypto.SymmetricCipher.java

License:Open Source License

public static void setEngine(ENGINE e) {
    activeEngine = e;/*www  . j av a2  s .c  om*/
    switch (e) {
    case AES:
        engine = new AESEngine();
        break;
    //    case AES_WRAP:
    //        engine = new AESWrapEngine();
    //        break;
    case Rijndael:
        engine = new RijndaelEngine();
        break;
    case Camellia:
        engine = new CamelliaEngine();
        break;
    case Blowfish:
        engine = new BlowfishEngine();
        break;
    case Serpent:
        engine = new SerpentEngine();
        break;
    case Threefish:
        //engine = new ThreefishEngine(256);
        engine = new ThreefishEngine(ThreefishSize);
        break;
    case Twofish:
    default:
        engine = new TwofishEngine();
    }
}

From source file:de.gs_sys.kp2016.crypto.SymmetricCipher.java

License:Open Source License

@Deprecated
protected static BlockCipher getEngine(ENGINE engine) {
    switch (engine) {
    case AES:// w  w  w  .ja v  a 2 s. co m
        return new AESEngine();
    //    case AES_WRAP:
    //        return new AESWrapEngine();
    case Rijndael:
        return new RijndaelEngine();
    case Camellia:
        return new CamelliaEngine();
    case Blowfish:
        return new BlowfishEngine();
    case Serpent:
        return new SerpentEngine();
    case Threefish:
        // return new ThreefishEngine(256);
        return new ThreefishEngine(ThreefishSize);
    case Twofish:
    default:
        return new TwofishEngine();
    }
}

From source file:de.jpm.model.EncryptionService.java

License:Open Source License

/**
 *
 * @param password//from   ww w  . ja v  a2 s .  c o m
 */
public void initCipher(char[] password) {
    PBEParametersGenerator keyGenerator = new PKCS12ParametersGenerator(new SHA256Digest());
    keyGenerator.init(PKCS12ParametersGenerator.PKCS12PasswordToBytes(password), salt, 20);
    CipherParameters keyParams = keyGenerator.generateDerivedParameters(256, 128);

    encryptCipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()), new PKCS7Padding());
    encryptCipher.init(true, keyParams);
    decryptCipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()), new PKCS7Padding());
    decryptCipher.init(false, keyParams);
}

From source file:edu.biu.scapi.primitives.prf.bc.BcAES.java

License:Open Source License

/**
 * Passes the AESEngine of BC to the abstract super class
 */
public BcAES() {
    super(new AESEngine());

}

From source file:edu.biu.scapi.primitives.prf.bc.BcAES.java

License:Open Source License

/**
 * Receives random object to use./*from   w  ww.java 2s  . co m*/
 * Passes it and the DesedeEngine of BC to the abstract super class.
 * @param random SecureRandom to use
 */
public BcAES(SecureRandom random) {
    super(new AESEngine(), random);
}

From source file:edu.biu.scapi.primitives.prf.bc.BcAES.java

License:Open Source License

/**
 * Receives name of random algorithm to use.
 * Passes it and the AESEngine of BC to the abstract super class.
 * @param randNumGenAlg random algorithm to use
 * @throws NoSuchAlgorithmException //  w w w  . ja v  a2  s.c  o  m
 */
public BcAES(String randNumGenAlg) throws NoSuchAlgorithmException {
    super(new AESEngine(), SecureRandom.getInstance(randNumGenAlg));

}

From source file:edu.tamu.tcat.crypto.bouncycastle.SymmetricCipherBuilderImpl.java

License:Apache License

@Override
public SymmetricCipher buildCipher(Cipher cipher, Mode mode, boolean encryption, byte[] key, byte[] iv)
        throws CipherException {
    ParametersWithIV cipherParameters = new ParametersWithIV(new KeyParameter(key), iv);
    BlockCipher underlyingCipher = null;
    switch (cipher) {
    case AES128:/*from ww w  .j a v  a 2 s  . c  o  m*/
    case AES192:
    case AES256:
        underlyingCipher = new AESEngine();
        break;
    }
    BlockCipher blockCipher = null;
    switch (mode) {
    case CBC:
        blockCipher = new CBCBlockCipher(underlyingCipher);
        break;
    case GCM:
        throw new CipherException("GCM mode is authenticating encryption; use buildAEADCipher instead");
    }
    BufferedBlockCipher bufferedBlockCipher = new PaddedBufferedBlockCipher(blockCipher);
    bufferedBlockCipher.init(encryption, cipherParameters);

    return new BouncyCastleBlockCipher(bufferedBlockCipher);
}

From source file:edu.tamu.tcat.crypto.bouncycastle.SymmetricCipherBuilderImpl.java

License:Apache License

@Override
public AEADSymmetricCipher buildAEADCipher(Cipher cipher, Mode mode, boolean encryption, byte[] key, byte[] iv)
        throws CipherException {
    ParametersWithIV cipherParameters = new ParametersWithIV(new KeyParameter(key), iv);
    BlockCipher underlyingCipher = null;
    int macSize = 0;
    switch (cipher) {
    case AES128://from   w ww . j a  v a  2  s.  c om
    case AES192:
    case AES256:
        underlyingCipher = new AESEngine();
        break;
    }
    AEADBlockCipher aeadCipher = null;
    switch (mode) {
    case CBC:
        throw new CipherException(mode + " is not an authenticating encryption mode; use buildCipher instead");
    case GCM:
        aeadCipher = new GCMBlockCipher(underlyingCipher);
        macSize = underlyingCipher.getBlockSize();
        break;
    }
    aeadCipher.init(encryption, cipherParameters);

    return new BouncyCastleAEADCipher(aeadCipher, macSize, encryption);
}

From source file:fc.xml.xas.security.SecUtil.java

License:Open Source License

public static BufferedBlockCipher getCipher(String id) {
    Verifier.checkNotNull(id);/*from  w w  w  .  j  a  v  a 2 s . c  o  m*/
    if (id.equals(AES_128_CIPHER)) {
        return new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()), new ISO10126d2Padding());
    } else {
        return null;
    }
}