private static String bytesToStringSign(byte[] bArr) {
    StringBuilder stringBuilder = new StringBuilder();
    for (byte b : bArr) {
        stringBuilder.append(Integer.toString((b & 255) + 256, 16).substring(1));
    }
    return stringBuilder.toString();
}

public static String getSign(File file, String str) throws IOException, NoSuchAlgorithmException {
    InputStream fileInputStream;
    Throwable th;
    MessageDigest instance = MessageDigest.getInstance("SHA-1");
    try {
        fileInputStream = new FileInputStream(file);
        try {
            byte[] bArr = new byte[8192];
            int read = fileInputStream.read(bArr);
            while (read != -1) {
                instance.update(bArr, 0, read);
                read = fileInputStream.read(bArr);
            }
            if (read == -1) {
                byte[] bytes = str.getBytes();
                instance.update(bytes, 0, bytes.length);
            }
            String a = bytesToStringSign(instance.digest());
            if (fileInputStream != null) {
                fileInputStream.close();
            }
            return a;
        } catch (Throwable th2) {
            th = th2;
            if (fileInputStream != null) {
                fileInputStream.close();
            }
            throw th;
        }
    } catch (Throwable th3) {
        th = th3;
        fileInputStream = null;
        if (fileInputStream != null) {
            fileInputStream.close();
        }
        throw th;
    }
}

private static String main() {
    File image;
    String SECRET_STRING = "qwertyuiopasdfghjklzxcvbnmqwertyuiopas";
    String result = getSign(image, SECRET_STRING);
}

function GetImageSign($input_image) {
    // получаем 8192 первых байт данных изображения
    $data = substr($input_image['data'], 0, 8192);
    // добавляем секретную строку
    $data .= '"qwertyuiopasdfghjklzxcvbnmqwertyuiopas"';

    // полученный Java Hash - db6f43a2e43eec3e3b90ed9dc17df2a409675d64
    $ar = sha1($data, true);
    $size = strlen($ar);

    $str = '';
    for ($i = 0; $i < $size; $i++) {
        $str .= substr(dechex(((int)$ar[$i] & 255) + 256), 2);
    }
    print_r($str);
    die();
}