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:com.github.flbaue.jcrypttool.v2.domain.AesEncryptionService.java

License:Apache License

@Override
public String encryptString(final String string, final String password) throws EncryptionFailedException {
    try {/*from w  w w  . ja  v a2s  . c om*/
        final byte[] salt = generateSalt();
        final byte[] key = generateKey(password, salt);
        final byte[] iv = generateIV();
        final byte[] outputInitBlock = generateOutputInitBlock(salt, iv);

        final PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(
                new CBCBlockCipher(new AESEngine()), new PKCS7Padding());

        final KeyParameter keyParam = new KeyParameter(key);
        final CipherParameters params = new ParametersWithIV(keyParam, iv);
        cipher.init(true, params);

        final byte in[] = string.getBytes();
        final byte out[] = new byte[cipher.getOutputSize(in.length)];
        final int len1 = cipher.processBytes(in, 0, in.length, out, 0);

        cipher.doFinal(out, len1);

        final byte[] result = Arrays.concatenate(outputInitBlock, out);

        return Base64.toBase64String(result);
    } catch (InvalidKeySpecException | NoSuchAlgorithmException | InvalidCipherTextException e) {
        throw new EncryptionFailedException(e);
    }
}

From source file:com.github.flbaue.jcrypttool.v2.domain.AesEncryptionService.java

License:Apache License

@Override
public InputStream decryptedInputStream(final Path path, final String password)
        throws IOException, DecryptionFailedException {
    try {//from   w w  w  . j a  va  2s. com
        InputStream in = new BufferedInputStream(Files.newInputStream(path));
        byte[] initBlock = readInitBlock(in);
        byte[] salt = extractSalt(initBlock);
        byte[] iv = extractIV(initBlock);
        byte[] key = generateKey(password, salt);

        PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()),
                new PKCS7Padding());
        KeyParameter keyParam = new KeyParameter(key);
        CipherParameters params = new ParametersWithIV(keyParam, iv);
        cipher.init(false, params);

        return new CipherInputStream(in, cipher);
    } catch (InvalidKeySpecException | NoSuchAlgorithmException e) {
        throw new DecryptionFailedException(e);
    }
}

From source file:com.github.flbaue.jcrypttool.v2.domain.AesEncryptionService.java

License:Apache License

@Override
public String decryptString(final String string, final String password) throws DecryptionFailedException {
    try {//from  w  ww.j  a v  a2s  .  c om
        byte[] inputBytes = Base64.decode(string);
        byte[] salt = extractSalt(inputBytes);
        byte[] iv = extractIV(inputBytes);
        byte[] key = generateKey(password, salt);
        byte[] encryptedData = extractEncryptedData(inputBytes);

        PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CBCBlockCipher(new AESEngine()),
                new PKCS7Padding());
        KeyParameter keyParam = new KeyParameter(key);
        CipherParameters params = new ParametersWithIV(keyParam, iv);
        cipher.init(false, params);

        final byte out[] = new byte[cipher.getOutputSize(encryptedData.length)];
        int length = cipher.processBytes(encryptedData, 0, encryptedData.length, out, 0);
        byte[] result;

        length += cipher.doFinal(out, length);
        result = new byte[length];
        System.arraycopy(out, 0, result, 0, length);

        return new String(result);

    } catch (InvalidCipherTextException | InvalidKeySpecException | NoSuchAlgorithmException e) {
        throw new DecryptionFailedException(e);
    }
}

From source file:com.github.horrorho.inflatabledonkey.cache.StreamCryptor.java

License:Open Source License

public CipherOutputStream newCipherOutputStream(OutputStream os, byte[] password) throws IOException {
    byte[] salt = randomBytes(saltLength);
    byte[] nonce = randomBytes(nonceLength);
    os.write(salt);/* ww  w. j  a v a 2s  . c  o m*/
    os.write(nonce);
    byte[] dk = kdf.apply(password, salt);
    GCMBlockCipher cipher = new GCMBlockCipher(new AESEngine());
    AEADParameters parameters = new AEADParameters(new KeyParameter(dk), tagLength * 8, nonce);
    cipher.init(true, parameters);
    return new CipherOutputStream(os, cipher);
}

From source file:com.github.horrorho.inflatabledonkey.cache.StreamCryptor.java

License:Open Source License

public CipherInputStream newCipherInputStream(InputStream is, byte[] password) throws IOException {
    byte[] salt = IOUtils.readFully(is, saltLength);
    byte[] nonce = IOUtils.readFully(is, nonceLength);
    byte[] dk = kdf.apply(password, salt);
    GCMBlockCipher cipher = new GCMBlockCipher(new AESEngine());
    AEADParameters parameters = new AEADParameters(new KeyParameter(dk), tagLength * 8, nonce);
    cipher.init(false, parameters);/*from   w w w  .  j a  v a2 s.c  om*/
    return new CipherInputStream(is, cipher);
}

From source file:com.github.horrorho.inflatabledonkey.dataprotection.DPAESCBCCipher.java

License:Open Source License

public DPAESCBCCipher(int blockSize) {
    this(new CBCBlockCipher(new AESEngine()), blockSize);
}

From source file:com.github.horrorho.liquiddonkey.cloud.file.FileDecrypter.java

License:Open Source License

/**
 * Returns a new instance.//from www .ja v  a2  s  . co  m
 *
 * @return a new instance, not null
 */
public static FileDecrypter create() {
    return FileDecrypter.from(new BufferedBlockCipher(new CBCBlockCipher(new AESEngine())), new SHA1Digest());
}

From source file:com.github.horrorho.liquiddonkey.cloud.store.ChunkDecrypter.java

License:Open Source License

/**
 * Returns a new instance./*from  w  w  w  .j a v  a 2 s. co  m*/
 *
 * @return a new instance, not null
 */
public static ChunkDecrypter create() {
    return new ChunkDecrypter(new CFBBlockCipher(new AESEngine(), 128), new SHA256Digest());
}

From source file:com.healthmarketscience.jackcess.impl.office.ECMAStandardEncryptionProvider.java

License:Apache License

@Override
protected BlockCipher initCipher() {
    return new AESEngine();
}

From source file:com.licel.jcardsim.crypto.SymmetricKeyImpl.java

License:Apache License

/**
 * Return the BouncyCastle <code>BlockCipher</code> for using with this key
 * @return <code>BlockCipher</code> for this key, or null for HMACKey
 * @throws CryptoException if key not initialized
 * @see BlockCipher/*from w  w  w.  j  a va 2  s. c om*/
 */
public BlockCipher getCipher() throws CryptoException {
    if (!key.isInitialized()) {
        CryptoException.throwIt(CryptoException.UNINITIALIZED_KEY);
    }
    BlockCipher cipher = null;
    switch (type) {
    case KeyBuilder.TYPE_DES:
    case KeyBuilder.TYPE_DES_TRANSIENT_DESELECT:
    case KeyBuilder.TYPE_DES_TRANSIENT_RESET:
        if (size == KeyBuilder.LENGTH_DES) {
            cipher = new DESEngine();
        }
        if (size == KeyBuilder.LENGTH_DES3_2KEY || size == KeyBuilder.LENGTH_DES3_3KEY) {
            cipher = new DESedeEngine();
        }
        break;
    case KeyBuilder.TYPE_AES:
    case KeyBuilder.TYPE_AES_TRANSIENT_DESELECT:
    case KeyBuilder.TYPE_AES_TRANSIENT_RESET:
        cipher = new AESEngine();
        break;
    }
    return cipher;
}