Android. Check the SHA1 of a file against a string

Android - File SHA1 check

public static boolean testSHA1(String sha1, File file) {
  	MessageDigest digest;
	try {
		digest = MessageDigest.getInstance("SHA1");
	} catch (NoSuchAlgorithmException e) {
		Log.e(TAG, "Exception while getting Digest", e);
		return false;
	}

	InputStream is;
	try {
		is = new FileInputStream(file);
	} catch (FileNotFoundException e) {
		Log.e(TAG, "Exception while getting FileInputStream", e);
		return false;
	}

	byte[] buffer = new byte[8192];
	int read;
	try {
		while ((read = is.read(buffer)) > 0) {
			digest.update(buffer, 0, read);
		}
		byte[] md5sum = digest.digest();
		BigInteger bigInt = new BigInteger(1, md5sum);
		String output = bigInt.toString(16);
		// Fill to 40 chars
		output = String.format("%40s", output).replace(' ', '0');
        
		Log.i(TAG, "Test: " + sha1);
		Log.i(TAG, "Generated: " + output);
		
		return (sha1.equals(output));
	} catch (IOException e) {
		throw new RuntimeException("Unable to process file for MD5", e);
	} finally {
		try {
			is.close();
		} catch (IOException e) {
			Log.e(TAG, "Exception on closing MD5 input stream", e);
		}
	}
}