Missing things in Phobos

[Piotr Szturmaj]

Steve Teale wrote:
> I'm sure that there's quite a long list, but two things I've bumped into
> with using the MySQL protocol are:
>
> 1) We don't have SHA1 - I know there are people working on this. I've
> done a version that is as close to the reference C implementation as I
> could make myself keep it. This may be useful as a check for others doing
> more efficient implementations. If you want it, please let me know.

https://github.com/pszturmaj/dmisc/blob/master/sha.d

It works for octet/byte hashing. It needs some polishing for handling 
per bit hashing.

> Related issue is should we have std.digest instead of std.md5

What about:

std.crypto.hash.md5
std.crypto.hash.sha
std.crypto.hash.whirlpool
std.crypto.hash.etc?

or std.crypt.* ?