Seems reasonable to me, but CC @agl.

Ping @agl , does this sound like something you'd accept if I send patches?

Ping.

With suitable documentation as you mentioned, this sounds reasonable. Feel free to send a CL.

If if it turns out @agl later objects passionately, you can put it under go4.org if you want to give it a non-github import path.

@danderson Any progress on this? I'm currently using a libpam wrapper but would much prefer a native implementation.

Note that in the meantime, https://github.com/GehirnInc/crypt has appeared.

There’s another copy of what seems to be largely the same code at https://github.com/tredoe/osutil/tree/master/user/crypt and https://github.com/ncw/pwhash.

I’d say it makes sense to provide a canonical implementation in x/crypto :)

I would like to see this added as well. I'm working on a libnss passwd/group/shadow module that stores users in etcd. Being able to build the hash withouth using a non-standard library or manually writing my own tool kit would be stellar.

I can give this a stab. I've got some related FRs (e.g. abbot/go-http-auth#75, abbot/go-http-auth#48) and want to move the crypto-related code out of that package. And since there is already some requests to support other crypt(3) algorithms here, I'm happy to add this support.