int saveKeypair(char *sPubkeyFile, char *sPrivkeyFile, RsaKey *pRsaKey)
{
    FILE *pubkeyFile = fopen(sPubkeyFile, "w");
    uint8_t data[4096];
    int dataSize = wc_RsaKeyToDer(pRsaKey, data, sizeof(data));

    int retval = fwrite( data, dataSize, 1, pubkeyFile);

    fclose(pubkeyFile);

    return 0;
}

int tryOpenKeypair(char *sPubkeyFile)
{
    FILE *pubkeyFile = fopen(sPubkeyFile, "r");
    uint8_t data[4096];

    int dataSize = fread(data, 1, sizeof(data), pubkeyFile);
    
    fclose(pubkeyFile);

    RsaKey *pTempRsaKey = malloc(sizeof(RsaKey));
    wc_InitRng(&rng);
    wc_InitRsaKey(pTempRsaKey, 0);

    unsigned int idx = 0; // Start of the data...
    int retval = wc_RsaPublicKeyDecode(data, &idx, pTempRsaKey, dataSize);
    
    uint8_t new_e[3];
    uint8_t new_n[384];
    uint32_t new_e_size = 3;
    uint32_t new_n_size = 384;
    int ret = wc_RsaFlattenPublicKey(pTempRsaKey, new_e, &new_e_size, new_n, &new_n_size);

    if (ret != 0)
    {
        printf("Error flattening public key: %d\n", ret);
        printf("pubkey buffer size = %d\n", pubkey_buffer_size);
        return -1;
    }
    else
    {
      printf("Successfully flattened key\n");
      printf("New N %d ", new_n_size);
      print_buffer(new_n, new_n_size);
      printf("New E %d ", new_e_size);
      print_buffer(new_e, new_e_size);
    }
}

    int ret = wc_MakeRsaKey(pRsaKey, numBytes * 8, 65537, pRng);

    // Try to get the key now
    unsigned int new_e_size, new_n_size;
    new_e_size = 3;
    new_n_size = numBytes;
    ret = wc_RsaFlattenPublicKey(pRsaKey, pPubkey_e, &new_e_size, pPubkey_n, &new_n_size);

    if (ret != 0)
    {
        printf("Error flattening public key: %d\n", ret);
        return -1;
    }
    else
    {
        printf("New E Buffer %d \n", new_e_size);
        print_buffer(pPubkey_e, new_e_size);
        printf("New N Buffer %d \n", new_n_size);
        print_buffer(pPubkey_n, new_n_size);
        *pPrivkey = (void *)pRsaKey;
    }

    saveKeypair(pPubFileName, pPrivFileName, pRsaKey);
    return 0;