MD5, SHA1, SHA256, CRC32

[Piotr Szturmaj]

Adam D. Ruppe wrote:
> There's a few of us who have written our own
> implementations of these, but as far as I know
> none of them are considered good enough for
> stdlib.
>
>
> But if you just want something you can use now,
> here's mine for sha:
>
> https://github.com/adamdruppe/misc-stuff-including-D-programming-language-web-stuff/blob/master/sha.d

And here's mine: 
https://github.com/pszturmaj/phobos/blob/master/std/crypto/hash/sha.d 
(yeah, I need to move it to a new branch)