비밀번호 암호화 작업

 const mongoose = require('mongoose');
+const bcrypt = require('bcrypt');
+const saltRounds = 10;
 const userSchema = mongoose.Schema({
     name : {
         type : String,
@@ -31,6 +33,27 @@ const userSchema = mongoose.Schema({
 
 })
 
+// password 암호화
+userSchema.pre('save', function(next){
+    var user = this;
+
+    if(user.isModified('password')){
+
+        bcrypt.genSalt(saltRounds, function(err, salt){
+            if(err)return next(err)
+
+            bcrypt.hash(user.password, salt, function(err, hash){
+                if(err) return next(err)
+                user.password = hash
+                //hash 값으로 변경해서 저장
+                next()
+            })
+        })
+    }
+
+})
+
+
 const User = mongoose.model('Users', userSchema)
 
 

@@ -15,6 +15,7 @@
   "author": "seungho",
   "license": "ISC",
   "dependencies": {
+    "bcrypt": "^4.0.1",
     "body-parser": "^1.19.0",
     "express": "^4.17.1",
     "mongoose": "^5.9.15"