diff --git a/f_func/func.php b/f_func/func.php
index 4cddb5b9..7e31a0a3 100644
--- a/f_func/func.php
+++ b/f_func/func.php
@@ -203,4 +203,26 @@ function toInt($val, $force=false){
         return intval($val);
     }
     throw new InvalidArgumentException('올바르지 않은 타입형 :'.$val);
-}
\ No newline at end of file
+}
+
+/**
+ * Generate a random string, using a cryptographically secure 
+ * pseudorandom number generator (random_int)
+ * 
+ * For PHP 7, random_int is a PHP core function
+ * For PHP 5.x, depends on https://github.com/paragonie/random_compat
+ * 
+ * @param int $length      How many characters do we want?
+ * @param string $keyspace A string of all possible characters
+ *                         to select from
+ * @return string
+ */
+function random_str($length, $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')
+{
+    $str = '';
+    $max = mb_strlen($keyspace, '8bit') - 1;
+    for ($i = 0; $i < $length; ++$i) {
+        $str .= $keyspace[random_int(0, $max)];
+    }
+    return $str;
+}
diff --git a/f_install/sql/common_schema.sql b/f_install/sql/common_schema.sql
index ff4224c7..06722bcd 100644
--- a/f_install/sql/common_schema.sql
+++ b/f_install/sql/common_schema.sql
@@ -43,33 +43,12 @@ CREATE TABLE `member` (
 )
 ENGINE=InnoDB DEFAULT CHARSET=UTF8;
 
-
--- 인증 테이블
-CREATE TABLE `auth_kakao` (
-	`no` BIGINT(20) NOT NULL AUTO_INCREMENT,
-	`id` BIGINT(20) NOT NULL COMMENT 'after signup',
-	`access_token` CHAR(128) NOT NULL COMMENT 'after token',
-	`refresh_token` CHAR(128) NOT NULL,
-	`expires` DATETIME NOT NULL,
-	`refresh_token_expires` DATETIME NOT NULL,
-	`datetime` DATETIME NOT NULL,
-	`email` VARCHAR(128) NOT NULL,
-	PRIMARY KEY (`no`),
-	INDEX `access_token` (`access_token`),
-	INDEX `id` (`id`),
-	INDEX `expires` (`expires`),
-	INDEX `email` (`email`),
-	INDEX `refresh_expires` (`refresh_token_expires`),
-	INDEX `datetime` (`datetime`)
-)
-ENGINE=InnoDB DEFAULT CHARSET=UTF8;
-
 -- 로그인 로그 테이블
 CREATE TABLE `member_log` (
 	`id` BIGINT(20) NOT NULL AUTO_INCREMENT,
 	`member_no` INT(11) NOT NULL,
 	`date` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
-	`action_type` ENUM('reg','try_login','login','logout','oauth','make_general','access_server') NOT NULL,
+	`action_type` ENUM('reg','try_login','login','logout','oauth','change_pw','make_general','access_server') NOT NULL,
 	`action` TEXT NULL DEFAULT NULL COMMENT 'JSON',
 	PRIMARY KEY (`id`),
 	INDEX `action` (`member_no`, `action_type`, `date`),
diff --git a/tmp_kakao/index.php b/tmp_kakao/index.php
index e0fb31b6..d8acebc3 100644
--- a/tmp_kakao/index.php
+++ b/tmp_kakao/index.php
@@ -53,7 +53,7 @@ function doLoginUsingOAuth(retry=false){
                 alert(obj.reason);
             }
             else{
-                getOAuthToken();
+                getOAuthToken('login');
             }
         }
         else{
@@ -71,6 +71,9 @@ function postOAuthResult(result){
         if(oauthMode=='change_pw'){
             sendTempPasswordToKakaoTalk();
         }
+        else{
+            doLoginUsingOAuth();
+        }
     }
     else{
         alert('예외 발생!');
diff --git a/tmp_kakao/j_change_pw.php b/tmp_kakao/j_change_pw.php
index 566dcdbc..7d915601 100644
--- a/tmp_kakao/j_change_pw.php
+++ b/tmp_kakao/j_change_pw.php
@@ -1,6 +1,118 @@
 <?php
 
 require('_common.php');
+require(ROOT.'/f_func/class._Session.php');
 require(ROOT.'/f_config/DB.php');
 require(ROOT.'/f_func/class._Time.php');
-require('kakao.php');
\ No newline at end of file
+require('kakao.php');
+
+use utilphp\util as util;
+$nowDate = _Time::DatetimeNow();
+
+$SESSION = new _Session();
+if(!$SESSION->isLoggedIn()){
+    returnJson([
+        'result'=>false,
+        'reason'=>'로그인이 되어있지 않습니다'
+    ]);
+}
+$userID = $SESSION->NoMember();
+$access_token = util::array_get($_SESSION['access_token']);
+$expires = util::array_get($_SESSION['expires']);
+$refresh_token = util::array_get($_SESSION['refresh_token']);
+$refresh_token_expires = util::array_get($_SESSION['refresh_token_expires']);
+
+if(!$access_token || !$expires){
+    returnJson([
+        'result'=>false,
+        'reason'=>'카카오로그인이 이루어지지 않았습니다.'
+    ]);
+}
+
+
+//TODO: join과 login의 동작이 비슷하다. helper class로 묶자.
+$restAPI = new Kakao_REST_API_Helper($access_token);
+
+if($expires < $nowDate && (!$refresh_token || ($refresh_token_expires < $nowDate))){
+    returnJson([
+        'result'=>false,
+        'reason'=>'로그인 토큰 만료.'.$refresh_token_expires.' 다시 카카오로그인을 수행해주세요.'
+    ]);
+}
+
+if($expires < $nowDate){
+    unset($_SESSION['kaccount_email']);
+    $email = null;
+
+    $result = $restAPI->refresh_access_token($refresh_token);
+    if(!isset($refresh_token)){
+        returnJson([
+            'result'=>false,
+            'reason'=>'카카오 로그인 과정 중 추가 갱신 절차를 실패했습니다'
+        ]);
+    }
+
+    $access_token = $result['access_token'];
+    $expires = _Time::DatetimeFromNowSecond($nowDate, $result['expires_in']);
+    if(isset($result['refresh_token'])){
+        $refresh_token = util::array_get($result['refresh_token']);
+        $refresh_token_expires = _Time::DatetimeFromNowSecond($nowDate, $result['refresh_token_expires_in']);
+    }
+}
+
+getRootDB()->query("lock tables member write, member_log write");
+
+$isUser = getRootDB()->queryFirstRow(
+    'SELECT count(`no`) from member where no=%i',$userID);
+if(!$isUser){
+    returnJson([
+        'result'=>false,
+        'reason'=>'회원이 아닙니다. 관리자에게 문의해주세요.'
+    ]);
+}
+
+$newPassword = random_str(6);
+$tmpPassword = hashPassword(getGlobalSalt(), $newPassword);
+$newSalt = bin2hex(random_bytes(8));
+$newFinalPassword = hashPassword($newSalt, $tmpPassword);
+
+$sendResult = $restAPI->talk_to_me_default([
+  "object_type"=> "text",
+  "text"=> "임시 비밀번호는 $newPassword 입니다. 로그인 후 바로 다른 비밀번호로 변경해주세요.",
+  "link"=> [
+    "web_url"=> getServerBasepath(),
+    "mobile_web_url" => getServerBasepath()
+  ],
+  "button_title"=> "로그인 페이지 열기"
+]);
+$sendResult['code'] = util::array_get($sendResult['code'], 0);
+if($sendResult['code'] < 0){
+    returnJson([
+        'result'=>false,
+        'reason'=>'카카오톡 메시지를 보내지 못했습니다.'
+    ]);
+}
+
+getRootDB()->update('member', [
+    'pw'=>$newFinalPassword,
+    'salt'=>$newSalt
+],'no=%i', $userID);
+
+getRootDB()->insert('member_log', [
+    'member_no'=>$userID,
+    'date'=>$nowDate,
+    'action_type'=>'change_pw',
+    'action'=>json_encode([
+        'type'=>'kakao',
+        'no'=>$userID,
+        'token'=>$access_token
+    ], JSON_UNESCAPED_UNICODE)
+]);
+
+getRootDB()->query("unlock tables");
+
+
+returnJson([
+    'result'=>true,
+    'reason'=>'success'
+]);
\ No newline at end of file
diff --git a/tmp_kakao/j_join_process.php b/tmp_kakao/j_join_process.php
index 00b34993..73eb960f 100644
--- a/tmp_kakao/j_join_process.php
+++ b/tmp_kakao/j_join_process.php
@@ -1,7 +1,7 @@
 <?php
 require_once('_common.php');
 require('lib.join.php');
-require(ROOT.'/f_func/class._Time.php');
+require_once(ROOT.'/f_func/class._Time.php');
 require('kakao.php');
 
 use utilphp\util as util;
@@ -142,16 +142,6 @@ if($emailChk !== true){
 }
 
 //모든 절차 종료. 등록.
-getRootDB()->insert('auth_kakao',[
-    'id'=>$kakaoID,
-    'access_token'=>$access_token,
-    'refresh_token'=>$refresh_token,
-    'expires'=>$expires,
-    'refresh_token_expires'=>$refresh_token_expires,
-    'datetime'=>$nowDate,
-    'email'=>$email
-]);
-
 getRootDB()->insert('member',[
     'oauth_id' => $kakaoID,
     'oauth_type' => 'KAKAO',
diff --git a/tmp_kakao/kakao.php b/tmp_kakao/kakao.php
index e822930e..1e6f7ad2 100644
--- a/tmp_kakao/kakao.php
+++ b/tmp_kakao/kakao.php
@@ -232,7 +232,11 @@ class Kakao_REST_API_Helper
   }
 
   public function talk_to_me_default($req){
-    return $this->request(TalkPath::$TALK_TO_ME_DEFAULT, json_encode($req), 'POST');
+    
+    $params = [
+      'template_object' => json_encode($req)
+    ];
+    return $this->request(Talk_Path::$TALK_TO_ME_DEFAULT, $params, 'POST');
   }
 
 
diff --git a/tmp_kakao/lib.join.php b/tmp_kakao/lib.join.php
index c3677cfb..75c50d98 100644
--- a/tmp_kakao/lib.join.php
+++ b/tmp_kakao/lib.join.php
@@ -2,7 +2,7 @@
 require_once('_common.php');
 require_once(__dir__.'/../d_setting/conf.php');
 require_once(__dir__.'/../f_func/func.php');
-require(ROOT.'/f_func/class._Time.php');
+require_once(ROOT.'/f_func/class._Time.php');
 
 function checkUsernameDup($username){
     if(!$username){
diff --git a/twe/func.php b/twe/func.php
index 1959456a..495a1dce 100644
--- a/twe/func.php
+++ b/twe/func.php
@@ -41,7 +41,7 @@ function randBool($prob = 0.5){
 }
 
 /** 
- * 로그인한 유저의 전역 id를 받아옴 
+ * 로그인한 유저의 전역 id(숫자)를 받아옴 
  *
  * @return int|null 
  */