[Cryptography] let's kill md5sum!

[Ben Laurie]

On 6 June 2015 at 03:22, Zooko Wilcox-OHearn <zooko at leastauthority.com> wrote:
> Dear Perry's Crypto List folks:
>
> The time has come to kill off md5sum. Here's the letter I wrote to the
> GNU coreutils project advocating replacing md5sum with b2sum (BLAKE2)
> which they seem to be in favor of:
>
> http://lists.gnu.org/archive/html/coreutils/2015-05/msg00048.html
>
> I did a quick and dirty benchmark (attached to that email as a
> postscript) and was delighted that b2sum (in BLAKE2sp mode) was almost
> twice as fast as m5sum on my Intel Core-i5 laptop!
>
> Do you all know of other implementations of md5sum besides the GNU
> coreutils one?

OpenSSL command line, of course.

But why BLAKE2? And who cares how fast it is?