ESPNOW Shipping and receiving

[Geko66]

Hello,
I am trying to adapt the espnow example for sending and receiving messages which are byte array generated by creating a public key when I receive it on the other device I get something totally different as the arrayI should receive would have to start with 04.
What I have added would be as follows:

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case EXAMPLE_ESPNOW_SEND_CB:
rest of the code

            if (!is_broadcast)
            {
                send_param->len = sizeof(key_public_bob);
                memcpy(send_param->buffer, key_public_bob, send_param->len);

                if (esp_now_send(send_param->dest_mac, key_public_bob,sizeof(key_public_bob)) != ESP_OK)
                {
                    ESP_LOGE(TAG, "Send error2");
                }
                    send_param->count--;
                    if (send_param->count == 0)
                    {
                        ESP_LOGI(TAG, "Send done");
                        example_espnow_deinit(send_param);
                        vTaskDelete(NULL);
                    }
                
            }

And at the reception it would be:

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else if (ret == EXAMPLE_ESPNOW_DATA_UNICAST)
            {
                ESP_LOGI(TAG, "Receive %dth unicast data from: " MACSTR ", len: %d", recv_seq, MAC2STR(recv_cb->mac_addr), recv_cb->data_len);

                memcpy(received_data, recv_cb->data, recv_cb->data_len);
                received_data[recv_cb->data_len] = '\0';
                received_data_length = recv_cb->data_len;
                //ESP_LOGI(TAG, "Chain: %s", received_data);
                printf("Data received ");
                for (int i = 0; i < received_data_length; i++)
                {
                    printf("%02hhx ", received_data[i]);
                }
                

                /* If receive unicast ESPNOW data, also stop sending broadcast ESPNOW data. */
                send_param->broadcast = false;
            }

I have generated the keys as follows:

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    psa_key_handle_t key_priv_bob;
    uint8_t key_public_bob[65];
    psa_generate_key(&attributes, &key_priv_bob);
    psa_export_public_key(key_priv_bob, &key_public_bob, sizeof(key_public_bob), &olenB);
    
  

How can I make sure it is sent correctly?