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

Example 91 with DigestInputStream

use of java.security.DigestInputStream in project UltimateAndroid by cymcsg.

the class CryptographyUtils method getMd5FromFile.

/**
     * Get the MD5 of the file
     *
     * @param filePath
     * @return
     * @throws IOException
     * @throws NoSuchAlgorithmException
     */
public static String getMd5FromFile(String filePath) throws IOException, NoSuchAlgorithmException {
    int bufferSize = 256 * 1024;
    FileInputStream fileInputStream = null;
    DigestInputStream digestInputStream = null;
    try {
        MessageDigest messageDigest = MessageDigest.getInstance("MD5");
        fileInputStream = new FileInputStream(filePath);
        digestInputStream = new DigestInputStream(fileInputStream, messageDigest);
        byte[] buffer = new byte[bufferSize];
        while (digestInputStream.read(buffer) > 0) ;
        messageDigest = digestInputStream.getMessageDigest();
        byte[] resultByteArray = messageDigest.digest();
        return byteArrayToHex(resultByteArray);
    } catch (NoSuchAlgorithmException e) {
        throw e;
    } finally {
        if (digestInputStream != null) {
            digestInputStream.close();
        }
        if (fileInputStream != null) {
            fileInputStream.close();
        }
    }
}

Example 92 with DigestInputStream

use of java.security.DigestInputStream in project android_frameworks_base by ParanoidAndroid.

the class ManifestDigest method fromInputStream.

static ManifestDigest fromInputStream(InputStream fileIs) {
    if (fileIs == null) {
        return null;
    }
    final MessageDigest md;
    try {
        md = MessageDigest.getInstance(DIGEST_ALGORITHM);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(DIGEST_ALGORITHM + " must be available", e);
    }
    final DigestInputStream dis = new DigestInputStream(new BufferedInputStream(fileIs), md);
    try {
        byte[] readBuffer = new byte[8192];
        while (dis.read(readBuffer, 0, readBuffer.length) != -1) {
        // not using
        }
    } catch (IOException e) {
        Slog.w(TAG, "Could not read manifest");
        return null;
    } finally {
        IoUtils.closeQuietly(dis);
    }
    final byte[] digest = md.digest();
    return new ManifestDigest(digest);
}

Example 93 with DigestInputStream

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

the class DigestInputStreamTest method testReadbyteArrayintint01.

/**
     * Test #1 for <code>read(byte[],int,int)</code> method<br>
     *
     * Assertion: returns the number of bytes read<br>
     *
     * Assertion: put bytes read into specified array at specified offset<br>
     *
     * Assertion: updates associated digest<br>
     */
public final void testReadbyteArrayintint01() 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);
            byte[] bArray = new byte[MY_MESSAGE_LEN];
            // check that read(byte[],int,int) returns valid value
            assertTrue("retval", dis.read(bArray, 0, bArray.length) == MY_MESSAGE_LEN);
            // check that bArray has been filled properly
            assertTrue("bArray", Arrays.equals(myMessage, bArray));
            // check that associated digest has been updated properly
            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 94 with DigestInputStream

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

the class DigestInputStreamTest method testRead05.

/**
     * Test #5 for <code>read()</code> method<br>
     *
     * Assertion: broken <code>DigestInputStream</code>instance:
     * associated <code>MessageDigest</code> not set.
     * <code>read()</code> must not work when digest
     * functionality is on
     */
public final void testRead05() {
    InputStream is = new ByteArrayInputStream(myMessage);
    DigestInputStream dis = new DigestInputStream(is, null);
    // must result in an exception
    try {
        for (int i = 0; i < MY_MESSAGE_LEN; i++) {
            dis.read();
        }
        fail("read() must not work when digest functionality is on");
    } catch (Exception e) {
    // Expected.
    }
}

Example 95 with DigestInputStream

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

the class DigestInputStreamTest method testRead04.

/**
     * Test #4 for <code>read()</code> method<br>
     *
     * Assertion: broken <code>DigestInputStream</code>instance:
     * <code>InputStream</code> not set. <code>read()</code> must
     * not work
     */
public final void testRead04() throws IOException {
    for (int ii = 0; ii < algorithmName.length; ii++) {
        try {
            MessageDigest md = MessageDigest.getInstance(algorithmName[ii]);
            DigestInputStream dis = new DigestInputStream(null, md);
            // must result in an exception
            try {
                for (int i = 0; i < MY_MESSAGE_LEN; i++) {
                    dis.read();
                }
            } catch (Exception e) {
                // Expected.
                return;
            }
            fail("InputStream not set. read() must not work");
        } catch (NoSuchAlgorithmException e) {
        // allowed failure
        }
    }
    fail(getName() + ": no MessageDigest algorithms available - test not performed");
}