I2C communication with SE050

[darshan_shah1]

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.

[Kan_Li]

Hi,

You may refer to sss_se05x_session_open() for details.

Hope that helps,

Have a great day,
Kan

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[darshan_shah1]

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.

[Kan_Li]

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

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