are there methods for validating passwords when using #scrypt?

are there methods for validating passwords when using #argon2 instead of #argon2_str?

EDIT FOR CLARITY

The way the docs are presented makes it seem that there is more available than what's documented. Something feels like it's missing

Hi 👋 Nice project!

The docs aren't clear on this question: how do you recommend setting up multiple devices to use the same private key? Or is that a no-no?

Test coverage is around 75% for SIDH package (/dh/sidh).
Good to have unit tests that cover missing areas of code.

I'm using ed25519-dalek for keygen, signing, and verification, and x25519 for ECDH. How do I convert secret public keys between them?

Take this naive attempt -- it seems like this works fine:

extern crate ed25519_dalek;
extern crate x25519_dalek;
extern crate rand;

use rand::prelude::*;

fn main() {
    let edkey1 = ed25519_dalek::Keypair::generate(&mut thread_rng()).public;