[ZIGBEE] switch key procedure

RE: [ZIGBEE] switch key procedure

Marte Myrvold — Thu, 04 Mar 2021 08:43:35 GMT

Hi,

Thank you for informing me. This will be handled in the other case you linked.

Best regards,

Marte

RE: [ZIGBEE] switch key procedure

_maibi — Wed, 03 Mar 2021 13:49:52 GMT

Hi, I don't find the solution below the question. My zed is still not getting updated key.

[quote userid="72896" url="~/f/nordic-q-a/71930/zigbee-switch-key-procedure/295956#295956"]

Why switch key mechanism doesn't work?

it is zigbee version problem? Is it up to zigbee developer?

[/quote]

so, I opened new question. Any help here would be very much appreciated.

RE: [ZIGBEE] switch key procedure

Marte Myrvold — Wed, 03 Mar 2021 12:54:05 GMT

Hi,

From what I could see, your questions here were answered in your other case. If I'm mistaken and some of your questions in this case were not answered in the other case and you're still experiencing problems with them, then let me know.

Best regards,

Marte

RE: [ZIGBEE] switch key procedure

_maibi — Wed, 03 Mar 2021 12:03:47 GMT

Hi, sorry about that. I won’t open it for same case. But, The deadline is very imminent. Could you help about this issue?

RE: [ZIGBEE] switch key procedure

Marte Myrvold — Wed, 03 Mar 2021 10:21:11 GMT

Hi,

I'm sorry for the late response, I've been discussing this case with my colleague responsible for your other case. Since you asked the same questions in that case and they've been answered there, I'll consider this solved. In the future, please refrain from creating several cases with the same questions. Keeping it in one case makes it easier for other users of the forum to find relevant cases if they're experiencing similar issues. In addition, if there are duplicate cases it might lead to the questions being solved in one case without the knowledge of the person working on the other case, which might affect response time. If you however get a problem or have a question unrelated to the original case, please don't hesitate to open a new case.

Best regards,

Marte

RE: [ZIGBEE] switch key procedure

_maibi — Wed, 24 Feb 2021 08:33:56 GMT

I found the solutions about few my questions.

[quote userid="72896" url="~/f/nordic-q-a/71930/zigbee-switch-key-procedure/295935#295935"]2) How can I register callback which handles APS layer packet? I currently handles ZCL packets by the code.[/quote]

static bool zcl_check_send_result(zb_uint8_t param)
{
    zb_zcl_command_send_status_t * p_cmd_status;

    if (param == 0)
    {
        return false;
    }
    uint8_t buf_len = zb_buf_len(param);
    p_cmd_status = ZB_BUF_GET_PARAM(param, zb_zcl_command_send_status_t);
    DEBUG_DATAL("ias_zone_result_cb data", zb_buf_begin(param), buf_len);
    DEBUG_PRINTF("Frame acknowledged. Status: %d\n", p_cmd_status->status);
    if (p_cmd_status->status != RET_OK)
    {
        /* No APS-ACK received. */
        DEBUG_PRINTF("No APS-ACK received.\n");
        return false;
    }
    return true;
}

I found the code in benchmark source in sdk.

I summarizes my questions again.

Why switch key mechanism doesn't work?

it is zigbee version problem? Is it up to zigbee developer?

I wants to send zigbee network layer packet like below picture. Which function should I use?

How can I get network time? Is there the synchronization of time in zigbee stack?

RE: [ZIGBEE] switch key procedure

_maibi — Wed, 24 Feb 2021 02:14:13 GMT

Hi, thanks for the reply.

The switch key doesn't have any key value.

1) What key pass to the function zb_secur_setup_nwk_key()?

The callback I mentioned is about receiving packet handler.

2) How can I register callback which handles APS layer packet? I currently handles ZCL packets by the code.

ZB_AF_SET_ENDPOINT_HANDLER(DOOR_LOCK_ENDPOINT, izs_zcl_cmd_handler);

I wants to watch receiving APS ack. The switch key/transport key also are in APS layer.

3) Why switch key mechanism doesn't work?

it is zigbee version problem?Is it up to zigbee developer?

zb_af_set_data_indication

I used "zb_af_set_data_indication" function which callback when receiving packet is aps data frame type.

but, I want to callback irrespective of frame type.

5) Is there packet decryption failed signal?

RE: [ZIGBEE] switch key procedure

Marte Myrvold — Tue, 23 Feb 2021 14:43:47 GMT

Hi,

I'm not sure what you mean by manipulate refresh key, but for network key switching you can use the function zb_secur_setup_nwk_key(), which can be used to force the network key switch procedure. I would recommend taking a look at the documentation for security in the Zigbee SDK, where you can find more information about the Zigbee network security API.

You can use the function zb_bdb_set_legacy_device_support(1) to disable the trust center require key exchange.

As for your questions about callback, you can take a look at the information about it in the page about programming principles in Zigbee. Also, it depends on what the callback is for. For ZCL commands, you can take a look at the function zcl_device_cb, which you will find in several of the Zigbee examples in the SDK, and you can also find several examples of different callbacks in CLI, specifically in the file zigbee_cli_cmd_zdo.c.

Best regards,

Marte