It's a pointless technique as noted by others. Along the same lines though is OPAQUE PAKE, where the server doesn't need to store a password hash, only a salt,

It's a pointless technique as noted by others. Along the same lines though is OPAQUE PAKE, where the server doesn't need to store a password hash, only a salt, making server compromise far less dangerous, it's quite elegant. There's no implementations so far I believe. https://eprint.iacr.org/2018/163 https://eprint.iacr.org/2018/163