module Argon2
module Argon2::Constants
module Argon2::Ext
class Argon2::ArgonHashFail
class Argon2::Engine
class Argon2::HashFormat
class Argon2::Password
argon2
2.1.3
:: saltgen
def self.saltgen SecureRandom.random_bytes(Argon2::Constants::SALT_LEN) end