[PATCH 1/3] crypto: add enum

[Sam Ravnborg]

> >>  
> >> +struct digest *digest_alloc_by_algo(enum hash_algo hash_algo)
> >> +{
> >> +	struct digest *d;
> >> +	struct digest_algo *algo;
> >> +
> >> +	algo = digest_algo_get_by_algo(hash_algo);
> >> +	if (!algo)
> >> +		return NULL;
> >> +
> >> +	d = xzalloc(sizeof(*d));
> >> +	d->algo = algo;
> >> +	d->ctx = xzalloc(algo->ctx_length);
> > 
> > Neither allocations are checked for failure.
> 
> If xzalloc fails barebox will go into OOM and throw a backtrace.
Makes sense. I thought about this, but failed to go back
and check this myself.

	Sam