class Argon2::Password

def initialize(options = {})
  @t_cost = options[:t_cost] || 2
  raise ArgonHashFail, "Invalid t_cost" if @t_cost < 1 || @t_cost > 750
  @m_cost = options[:m_cost] || 16
  raise ArgonHashFail, "Invalid m_cost" if @m_cost < 1 || @m_cost > 31
  @p_cost = options[:p_cost] || 1
  raise ArgonHashFail, "Invalid p_cost" if @p_cost < 1 || @p_cost > 8
  @salt_do_not_supply = options[:salt_do_not_supply]
  @secret = options[:secret]
end