topic Re: I2C communication with SE050 in Secure Authentication

I2C communication with SE050

darshan_shah1 — Fri, 06 Mar 2020 08:14:17 GMT

Hi,

I am using FRMD-K64 and SE050. I would like to do secure boot using SE050.

For this, I have injected a ECC key-pair in SE050.

Now I would like to get public key from SE050 in boot-loader. As I am changing in boot-loader, I would like to add minimal code so I choose to do plain I2C communication instead of porting SE050 middleware.

I have understood APDU format which required and t=1 over i2c protocol format. Yet I don't understand the sequence to do it. Like for test with GetVersion, should I directly write on I2C as below APDU in t=1 over i2c format?

I am using I2C_MasterTransferBlocking for I2C communication.

Re: I2C communication with SE050

Kan_Li — Mon, 09 Mar 2020 07:08:26 GMT

Hi,

You may refer to sss_se05x_session_open() for details.

Hope that helps,

Have a great day,
Kan

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Re: I2C communication with SE050

darshan_shah1 — Thu, 19 Mar 2020 05:44:04 GMT

Thanks. I will check and let you know if I face any issue.

Do we really need se_hostlib to communicate with SE050 or we can implement without it as well with only taking T1I2C part.

Re: I2C communication with SE050

Kan_Li — Fri, 20 Mar 2020 05:27:36 GMT

It is recommended to implement your application based on the MW, of course you may start from scratch but the support materials might be little on that topic except the spec.

Have a great day,
Kan