Secure AuthenticationのトピックRe: GO no GO test on SE050

GO no GO test on SE050

Bar — Mon, 12 Sep 2022 13:18:23 GMT

Hello I am new with the SE050 and I have some questions.

1. I am not quit understand what is the roll of the SE050 in the authentication word. Is it made the private key, public key, the security key from both of them or it encrypt/decrypt messages it get or all of that?

2. At this point I just want to check the I2C link between my MCU (STM32L) to the SE050.

For that I want to send hello message and get ack. But I didn't find any command do it for the SE050.

So I decide to use the version or the timestamp command, but still some wondering about the message.

As per APDU protocol there is the CLA, INS, P1,P2 Lc,Le, where Lc is the length of send message and Le is the length of expect data receive.

But in

Hello I am new with the SE050 and I have some questions.

2. At this point I just want to check the I2C link between my MCU (STM32L) to the SE050.

For that I want to send hello message and get ack. But I didn't find any command do it for the SE050.

So I decide to use the version or the timestamp command, but still some wondering about the message.

As per APDU protocol there is the CLA, INS, P1,P2 Lc,Le, where Lc is the length of send message and Le is the length of expect data receive.

But as i look in article AN12413 SE050 APDU Specification

for 4.19.1 GetVersion

Lc - #(Payload) what it mean, if there no data send?

Le- 0x0B (11 bytes) the response is only 7 bytes?

The some for 4.19.2 GetTimestamp

Lc - #(Payload) what it mean, if there no data send?

Le- 0x14 (20 bytes) the response is only 12 bytes?

Re: GO no GO test on SE050

Kan_Li — Tue, 13 Sep 2022 03:19:26 GMT

Hi @Bar ,

Please kindly have my comments as below:

- SE050 supports all of that but not limited to.

2. SE050 IoT applet defines APDUs according to ISO7816-4 APDU message format, please kindly refer to https://www.iso.org/standard/54550.html for more details.

Hope that helps,

Have a great day,
Kan

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Re: GO no GO test on SE050

Bar — Tue, 13 Sep 2022 07:16:35 GMT

Thanks.
Is there a general article (even long) that explain all the feature of this device include examples?
About issue 2. I read a lot about this standard, but it is all general. I want someone explicitly, show what to write in those 2 commands( VersionInfo, timestamp).

Re: GO no GO test on SE050

Kan_Li — Tue, 13 Sep 2022 09:22:49 GMT

Hi @Bar ,

There is a user guide line for this device and you may have it from the following link:

https://www.nxp.com.cn/docs/en/application-note/AN13483.pdf .

and if you download the latest MW for SE050 from https://www.nxp.com/webapp/Download?colCode=SE05x-PLUG-TRUST-MW&appType=license , you may know more about the examples for this device , referring to the docs in simw-top\doc\index.html. In the MW, a demo of "write APDU to buffer" is available, and you may use it to print APDU commands such as GetVersion into a buffer. Please refer to "simw-top/doc/appendix/apdu_write_to_buffer.html" for more details.

Hope that makes sense,

Have a great day,
Kan