package pwhash

import (
	"crypto/pbkdf2"
	"crypto/sha256"
	"crypto/sha512"
)

const defaultIterations = 3670016 // from cmd/finditers

func HashIter(password string, salt []byte, iter int) ([]byte, error) {
	return pbkdf2.Key(sha256.New, password, salt, iter, 32)
}

func Hash(password string, salt []byte) ([]byte, error) {
	hashed, err := HashIter(password, salt, defaultIterations)
	if err != nil {
		return nil, err
	}
	sha := sha512.Sum512(hashed)
	return sha[:], nil
}