public static long crc64(final byte[] array) {
        if (array == null) {
            return 0;
        }
        return crc64(array, 0, array.length);
    }
Compute CRC64 checksum for byte[].

@param array source array
@return checksum value
jraft-core/src/main/java/com/alipay/sofa/jraft/util/CrcUtil.java