# File lib/hmac.rb, line 54
    def reset_key
      @key_xor_ipad.gsub!(/./, '?')
      @key_xor_opad.gsub!(/./, '?')
      @key_xor_ipad[0..-1] = ''
      @key_xor_opad[0..-1] = ''
      @status = STATUS_UNDEFINED
    end