HMAC SHA256 hashing

[markpatterson27]

According to the datasheet, the ECC508 can do HMAC hashing but I don't see it implemented in this library. Is it possible to do HMAC-SHA256 hashing with this library?

[RLeclair]

I'm interested as well in this and I am investigating a way to implement it, is there already work being done?

[per1234]

Closing as resolved by #45