node.js - cannot install crytpo in a my nodejs app using npm -


hello guys have nodejs app, , need install crytpo passwords confidentiality .

i'm using express 3.0.0
node 5.5.0
npm : 3.3.12

when tap npm install crypto cmd tell following :

enter image description here

this file package.json :

{   "name": "training2",   "version": "0.0.1",   "private": true,   "scripts": {     "start": "node app"   },   "dependencies": {     "body-parser": "^1.14.2",     "ejs": "*",     "express": "3.0.0"   } }

could me ot please! thanks


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