Code review comment for lp:~mir-team/mir/public-cookie-api

> > sizeof(uint64_t) is not a synonym for 8 - although platforms with 16bit
> > characters are of little interest to us.
>
> Hmm should I just not assert this then? Since really all im assert is that our
> mac == sizeof(uint64_t). So possibly I should just change the name.

On reflection, if unit8_t exists we're safe to assume 8 bit chars. (And if it doesn't we don't compile.)