[RFC PATCH] Add SHA1 support

[Markus Ueberall]

On 2020-02-09 23:19, Sebastian Andrzej Siewior wrote:
> [...]
> My primar motivation to use SHA1 for checksumming (by default) instead
> of MD5 is not the additional security bits but performance. On a decent
> x86 box the SHA1 performance is almost the same as MD5's but with
> acceleration it outperforms MD5.
> 
> The other alternative would be to go for xxHash64 [0] which has the
> superior performance but provides a non-cryptographic hash so I though
> SHA1 would be better here.
> [...]

With respect to *both* speed and security, wouldn't BLAKE3 be a better,
modern alternative if we're looking at checksumming?
It's "[r]eleased into the public domain with CC0 1.0. Alternatively, it 
is
licensed under the Apache License 2.0".  And the performance (see the 
chart
at https://github.com/BLAKE3-team/BLAKE3) is *impressive* ...

Kind regards, Markus