Examples with DigestInputStream java.security.DigestInputStream used on opensource projects

Example 56 with DigestInputStream

use of java.security.DigestInputStream in project robovm by robovm.

the class DigestInputStreamTest method testRead02.

/**
     * Test #2 for <code>read()</code> method<br>
     *
     * Assertion: returns -1 if EOS had been
     * reached but not read before method call<br>
     *
     * Assertion: must not update digest if EOS had been
     * reached but not read before method call<br>
     */
public final void testRead02() throws IOException {
    for (int ii = 0; ii < algorithmName.length; ii++) {
        try {
            MessageDigest md = MessageDigest.getInstance(algorithmName[ii]);
            InputStream is = new ByteArrayInputStream(myMessage);
            DigestInputStream dis = new DigestInputStream(is, md);
            for (int i = 0; i < MY_MESSAGE_LEN; i++) {
                dis.read();
            }
            // check that subsequent read() calls return -1 (eos)
            assertEquals("retval1", -1, dis.read());
            assertEquals("retval2", -1, dis.read());
            assertEquals("retval3", -1, dis.read());
            // check that 3 previous read() calls did not update digest
            assertTrue("update", Arrays.equals(dis.getMessageDigest().digest(), MDGoldenData.getDigest(algorithmName[ii])));
            return;
        } catch (NoSuchAlgorithmException e) {
        // allowed failure
        }
    }
    fail(getName() + ": no MessageDigest algorithms available - test not performed");
}

Example 57 with DigestInputStream

use of java.security.DigestInputStream in project routerkeygenAndroid by routerkeygen.

the class HashUtils method checkDicMD5.

// Check RouterKeygen.dic file through md5
public static boolean checkDicMD5(String dicFile, final byte[] expected) {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        InputStream is = new FileInputStream(dicFile);
        try {
            is = new DigestInputStream(is, md);
            while (is.read() != -1) {
            }
        } finally {
            is.close();
        }
        final byte[] hash = md.digest();
        return Arrays.equals(hash, expected);
    } catch (Exception e) {
        return false;
    }
}

Example 58 with DigestInputStream

use of java.security.DigestInputStream in project AndroidUtilCode by Blankj.

the class FileUtils method getFileMD5.

/**
     * 获取文件的MD5校验码
     *
     * @param file 文件
     * @return 文件的MD5校验码
     */
public static byte[] getFileMD5(File file) {
    if (file == null)
        return null;
    DigestInputStream dis = null;
    try {
        FileInputStream fis = new FileInputStream(file);
        MessageDigest md = MessageDigest.getInstance("MD5");
        dis = new DigestInputStream(fis, md);
        byte[] buffer = new byte[1024 * 256];
        while (dis.read(buffer) > 0) ;
        md = dis.getMessageDigest();
        return md.digest();
    } catch (NoSuchAlgorithmException | IOException e) {
        e.printStackTrace();
    } finally {
        CloseUtils.closeIO(dis);
    }
    return null;
}

Example 59 with DigestInputStream

use of java.security.DigestInputStream in project jdk8u_jdk by JetBrains.

the class TestDigestIOStream method testMDShare.

/**
     * Test DigestInputStream and DigestOutputStream digest function when use
     * same message digest object.
     *
     * @param algo
     *            Message Digest algorithm
     * @param dataLength
     *            plain test data length.
     * @exception Exception
     *                throw unexpected exception
     */
public boolean testMDShare(String algo, int dataLength) throws Exception {
    MessageDigest mdCommon = MessageDigest.getInstance(algo);
    // Generate the DigestInputStream/DigestOutputStream object
    try (ByteArrayInputStream bais = new ByteArrayInputStream(data);
        DigestInputStream dis = new DigestInputStream(bais, mdCommon);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DigestOutputStream dos = new DigestOutputStream(baos, mdCommon)) {
        // Perform the update using all available/possible update methods
        int k = 0;
        byte[] buffer = new byte[10];
        // use both read() and read(byte[], int, int)
        while (k < data.length) {
            int len = dis.read(buffer, 0, buffer.length);
            if (len != -1) {
                k += len;
                if (k < data.length) {
                    dos.write(data[k]);
                    k++;
                    dis.skip(1);
                }
            }
        }
        // Get the output and the "correct" digest values
        byte[] output = mdCommon.digest();
        byte[] standard = md.digest(data);
        // Compare generated digest values
        return MessageDigest.isEqual(output, standard);
    } catch (Exception ex) {
        out.println("TestMDShare failed at:" + algo + "/" + dataLength + " with unexpected exception");
        throw ex;
    }
}

Example 60 with DigestInputStream

use of java.security.DigestInputStream in project jdk8u_jdk by JetBrains.

the class CipherStreamClose method streamDecrypt.

public static Object streamDecrypt(byte[] data, SecretKey key, MessageDigest digest) throws Exception {
    Cipher decCipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
    decCipher.init(Cipher.DECRYPT_MODE, key);
    digest.reset();
    try (ByteArrayInputStream bis = new ByteArrayInputStream(data);
        DigestInputStream dis = new DigestInputStream(bis, digest);
        CipherInputStream cis = new CipherInputStream(dis, decCipher)) {
        try (ObjectInputStream ois = new ObjectInputStream(cis)) {
            return ois.readObject();
        }
    }
}