Incompatible with hashes generated by libxcrypt

[rkh]

I assume this is an issue somewhere upstream, but I noticed that the hashes generated by libxcrypt fail to verify. Feel free to close, but wanted to bring it up in case this is an actual bug somewhere in here.

# generated by libxcrypt for "password"
hash = "$y$j9T$6wnH/6iXqR5hdvFbyWSH9/$mx1FQly4GSMwuA741mFyQrGvDZhiLKIGVtDh5f.VsE8"
Yescrypt.verify("password", hash) # => false (expected true)

I've also created Ruby bindings for libxcrypt.

[rkh]

The same is true for hashes generated with https://cybot.eu.org/utils/yescrypt/ btw

[rkh]

I think the reason is that the code used isn't Yescrypt 1.0/1.1 compatible? Which is interesting. It seems to have diverged. An up to date implementation can be found here: https://www.openwall.com/yescrypt/