In　remote　data　storage　system,　the　information　privacy　is　the　main　concern　of　the　users.　Data　confidentiality,　keyword　search　and　access　control　are　important　characteristics　that　should　be　supported　in　such　system.　With　the　advent　of　quantum　computer,　number　theory　related　assumptions　are　vulnerable　to　quantum　attack.　In　this　context,　we　propose　a　post-quantum　secure　searchable　encryption　scheme.　Data　owner＇s　files　are　stored　in　encrypted　form.　The　keyword　search　function　can　be　authorized　to　multiple　users　without　sharing　private　key.　Based　on　the　learning　with　errors　(LWE)　assumption,　the　scheme　is　proved　secure　against　chosen-keyword　attack.　The　intractability　of　LWE　problem　guarantees　its　security　in　quantum　age.　©　2017　Institute　of　Information　Science.　All　rights　reserved.