Como usar sha512 sin Salt?

[hhs]

El manual es muy claro:

Do you need to a Salt property?

If you use bcrypt, no. Otherwise, yes. All passwords must be hashed with a salt, but bcrypt does this internally. Since this tutorial does use bcrypt, the getSalt() method in User can just return null (it's not used). If you use a different algorithm, you'll need to uncomment the salt lines in the User entity and add a persisted salt property.