sha256 to bigint

[Paul Backus]

On Saturday, 11 June 2022 at 13:09:44 UTC, vc wrote:
>
> Hello, is there any way to represnts a sha256 hash like 
> 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824 in BigInt ?
>
> I've try so far auto t = 
> BigInt("2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824") and it gives me invalid digit

Just so you know, you can construct a `BigInt` directly from the 
raw bytes of a sha256 hash, without converting to a string first:

```d
import std.digest.sha, std.bigint;

ubyte[32] hash = sha256Of(whatever);
auto t = BigInt(false, hash[]); // sign + magnitude
```

Docs: https://phobos.dpldocs.info/std.bigint.BigInt.this.3.html