cryptography

[stark]

Hi Team,

What is the meaning of BLE advertising link encryption and data encryption,That makes no sense .In glucose example the DH computation is calculating can you clarify.

Thanks,

Stark. 

[Jared]

Hi,

Encryption provides security in that it prevents people from sniffing the data that is sent. Glucose meter is a typical sensitive application where the user wants to protect the data thus the need for link encryption. 

regards

Jared 

[stark]

Hi Jared,

Thanks for your nice replay,

1) I use Glucose application as a reference.So in  the Glucose example have only link encryption but no data encryption, Am I right?.

2) Can you explain the difference lil bit more.

Regards,

Stark.

[Jared]

Not sure, I understood you correctly. 

But I would say that it's somewhat the same in this case as an unauthorized user can't read the data that is sent through the link without going through the authentication. A user that is trying to sniff the data without having being authorized will just see unreadable data, thus the data is encrypted. 

[stark]

Thanks Jared!!