uECC_VLI_API void uECC_vli_nativeToBytes(uint8_t *bytes,
                                         int num_bytes,
                                         const uECC_word_t *native) {
    wordcount_t i;
    for (i = 0; i < num_bytes; ++i) {
        unsigned b = num_bytes - 1 - i;
        bytes[i] = native[b / uECC_WORD_SIZE] >> (8 * (b % uECC_WORD_SIZE));
    }
}