Example usage for java.io ByteArrayInputStream read

Introduction

In this page you can find the example usage for java.io ByteArrayInputStream read.

Prototype

public int read(byte b[]) throws IOException 

Source Link

Document

Reads some number of bytes from the input stream and stores them into the buffer array b.

Usage

From source file:Main.java

public static int byteArrayCompare(byte[] byte1, byte[] byte2) {
    byte[] tByte1 = new byte[byte2.length];

    ByteArrayInputStream input = new ByteArrayInputStream(byte1);

    try {/*w  w w  .j a  va2 s . com*/
        input.read(tByte1);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    ByteBuffer byteBuf1 = ByteBuffer.wrap(tByte1);
    ByteBuffer byteBuf2 = ByteBuffer.wrap(byte2);

    return byteBuf1.compareTo(byteBuf2);
}

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From source file:Main.java

public static void writeFile(File file, byte[] content) throws IOException {
    if (!file.exists()) {
        try {/* w ww . j  a  v a2  s. co m*/
            file.createNewFile();
        } catch (IOException e) {
            throw new IOException("not crete file=" + file.getAbsolutePath());
        }
    }
    FileOutputStream fileOutputStream = null;
    ByteArrayInputStream bis = null;
    try {
        bis = new ByteArrayInputStream(content);
        fileOutputStream = new FileOutputStream(file, false);
        byte[] buffer = new byte[1024];
        int length = 0;
        while ((length = bis.read(buffer)) != -1) {
            fileOutputStream.write(buffer, 0, length);
        }
        fileOutputStream.flush();
    } finally {
        if (fileOutputStream != null) {
            fileOutputStream.close();
        }
        if (bis != null) {
            bis.close();
        }
    }
}

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From source file:Main.java

public static byte[] encrypt(byte[] byteArray, PrivateKey privateKey) {
    Cipher cipher = null;//w  w  w .j a v a 2s.co  m

    try {
        cipher = Cipher.getInstance("RSA/ECB/NoPadding");
        /*
           (define cipher (javax.crypto.Cipher.getInstance "RSA/ECB/NoPadding"))
         */
    } catch (NoSuchAlgorithmException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    try {
        cipher.init(Cipher.ENCRYPT_MODE, privateKey);
    } catch (InvalidKeyException e) {
        e.printStackTrace();
    }

    ByteArrayInputStream input = new ByteArrayInputStream(byteArray);
    ByteArrayOutputStream output = new ByteArrayOutputStream();
    try {

        while (input.available() != 0) {
            byte[] t0 = new byte[100];
            input.read(t0);
            output.write(cipher.doFinal(t0));
        }
    } catch (IllegalBlockSizeException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (BadPaddingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return output.toByteArray();
}

---

From source file:Main.java

public static byte[] decrypt(byte[] byteArray, PublicKey publicKey) {
    Cipher cipher = null;/*from ww  w. j  a v  a 2s  .c  o  m*/

    try {
        cipher = Cipher.getInstance("RSA/ECB/NoPadding");
    } catch (NoSuchAlgorithmException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (NoSuchPaddingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    try {

        cipher.init(Cipher.DECRYPT_MODE, publicKey);

    } catch (InvalidKeyException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    ByteArrayInputStream input = new ByteArrayInputStream(byteArray);
    ByteArrayOutputStream output = new ByteArrayOutputStream();

    try {

        while (input.available() != 0) {
            byte[] t0 = new byte[128];
            input.read(t0);
            output.write(cipher.doFinal(t0));
        }

    } catch (IllegalBlockSizeException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (BadPaddingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return output.toByteArray();
}

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From source file:com.uzhnu.reedmuller.api.JsonFileCache.java

private static String getSha1Hash(String input) throws Exception {
    String retval = null;//from w  ww.j  av a2s .  c  om
    ByteArrayInputStream inputStream = new ByteArrayInputStream(input.getBytes("UTF-8"));
    MessageDigest hash = MessageDigest.getInstance("SHA1");
    byte[] buffer = new byte[1024];

    int numRead = 0;
    while ((numRead = inputStream.read(buffer)) != -1) {
        hash.update(buffer, 0, numRead);
    }

    retval = toHexString(hash.digest());
    return retval;
}

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From source file:pl.otros.logview.io.Utils.java

public static boolean checkIfIsGzipped(FileObject fileObject) throws IOException {
    boolean gziped = false;
    if (fileObject.getContent().getSize() == 0) {
        LOGGER.fine("File object " + fileObject.getName() + " is empty, can't detect gzip compression");
        return false;
    }/*from   w  ww  . j  ava 2  s . c o  m*/
    InputStream inputStream = fileObject.getContent().getInputStream();
    byte[] loadProbe = loadProbe(inputStream, GZIP_CHECK_BUFFER_SIZE);
    // IOUtils.closeQuietly(inputStream);
    if (loadProbe.length < GZIP_MIN_SIZE) {
        LOGGER.info("Loaded probe is too small to check if it is gziped");
        return false;
    }
    try {
        ByteArrayInputStream bin = new ByteArrayInputStream(loadProbe);
        int available = bin.available();
        byte[] b = new byte[available < GZIP_CHECK_BUFFER_SIZE ? available : GZIP_CHECK_BUFFER_SIZE];
        int read = bin.read(b);
        gziped = checkIfIsGzipped(b, read);
    } catch (IOException e) {
        // Not gziped
        LOGGER.fine(fileObject.getName() + " is not gzip");
    }

    return gziped;
}

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From source file:pl.otros.logview.api.io.Utils.java

public static boolean checkIfIsGzipped(FileObject fileObject) throws IOException {
    boolean gziped = false;
    if (fileObject.getContent().getSize() == 0) {
        LOGGER.debug("File object " + fileObject.getName() + " is empty, can't detect gzip compression");
        return false;
    }/*  w  w w . j ava2s.c o m*/
    InputStream inputStream = fileObject.getContent().getInputStream();
    byte[] loadProbe = loadProbe(inputStream, GZIP_CHECK_BUFFER_SIZE);
    // IOUtils.closeQuietly(inputStream);
    if (loadProbe.length < GZIP_MIN_SIZE) {
        LOGGER.info("Loaded probe is too small to check if it is gziped");
        return false;
    }
    try {
        ByteArrayInputStream bin = new ByteArrayInputStream(loadProbe);
        int available = bin.available();
        byte[] b = new byte[available < GZIP_CHECK_BUFFER_SIZE ? available : GZIP_CHECK_BUFFER_SIZE];
        int read = bin.read(b);
        gziped = checkIfIsGzipped(b, read);
    } catch (IOException e) {
        // Not gziped
        LOGGER.debug(fileObject.getName() + " is not gzip");
    }

    return gziped;
}

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From source file:net.sf.keystore_explorer.utilities.io.HexUtil.java

/**
 * Get hex and clear text dump of byte array.
 *
 * @param bytes/*from   w  w w .  j  a v  a2  s .  c  o m*/
 *            Array of bytes
 * @return Hex/clear dump
 * @throws IOException
 *             If an I/O problem occurs
 */
public static String getHexClearDump(byte[] bytes) throws IOException {
    ByteArrayInputStream bais = null;

    try {
        // Divide dump into 8 byte lines
        StringBuffer strBuff = new StringBuffer();

        bais = new ByteArrayInputStream(bytes);
        byte[] line = new byte[8];
        int read = -1;
        boolean firstLine = true;

        while ((read = bais.read(line)) != -1) {
            if (firstLine) {
                firstLine = false;
            } else {
                strBuff.append(NEWLINE);
            }

            strBuff.append(getHexClearLineDump(line, read));
        }

        return strBuff.toString();
    } finally {
        IOUtils.closeQuietly(bais);
    }
}

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From source file:gov.nist.healthcare.ttt.parsing.Parsing.java

private static byte[] read(ByteArrayInputStream bais) throws IOException {
    byte[] array = new byte[bais.available()];
    bais.read(array);

    return array;
}

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From source file:org.roda.common.certification.ODFSignatureUtils.java

public static Path runDigitalSignatureSign(Path input, String ks, String alias, String password,
        String fileFormat) throws Exception {

    Security.addProvider(new BouncyCastleProvider());
    Path output = Files.createTempFile("odfsigned", "." + fileFormat);

    KeyStore keystore = KeyStore.getInstance(KeyStore.getDefaultType());
    InputStream storeStream = new FileInputStream(ks);
    keystore.load(storeStream, password.toCharArray());
    X509Certificate certificate = (X509Certificate) keystore.getCertificate(keystore.aliases().nextElement());
    Key key = keystore.getKey(alias, password.toCharArray());
    IOUtils.closeQuietly(storeStream);//from   ww  w  .j  a va  2s. c  o m

    ByteArrayInputStream bais = createSignature(input.toString(), certificate, key);
    File file = output.toFile();
    if (file != null) {
        byte[] buffer = new byte[2048];
        int length = 0;
        FileOutputStream fos = new FileOutputStream(file);
        while ((length = bais.read(buffer)) >= 0) {
            fos.write(buffer, 0, length);
        }
        IOUtils.closeQuietly(fos);
    }

    return output;
}

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