Tanmay Vij | AES Encryptor-Decryptor/ | CLI based Encryption tool

Author: tanmayvij

AES Encryptor-Decryptor/.gitignore

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+node_modules/

AES Encryptor-Decryptor/README.md

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+# AES Encryption/Decryption Tool built in NodeJS
+
+### Requirements
+- NodeJS
+- NPM
+### Running
+```sh
+$ cd AES\ Encryptor-Decryptor/
+$ npm start
+```
+
+### Contributor
+
+[tanmayvij](https://github.com/tanmayvij)

AES Encryptor-Decryptor/app.js

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+const crypto = require('crypto');
+const prompt = require('prompt');
+const algorithm = 'aes-256-ctr';
+
+let password;
+let iv = crypto.createHash('sha256').update(String("vsdjkdhg")).digest('base64').substr(0, 16);
+
+const decrypt = () => {
+
+  try
+  {
+    prompt.get({name: "encrypted", message: "Encrypted String"}, (error, result) => {
+      if(!error)
+      {
+        let encrypted = result.encrypted;
+        prompt.get("Password", (err, result) => {
+          if(!err)
+          {
+            password = result.Password;
+            const decipher = crypto.createDecipheriv(algorithm,password, iv);
+            let dec = decipher.update(encrypted,'hex','utf8');
+            dec += decipher.final('utf8');
+            console.log("Decrypted String: ", dec);
+          }
+        });
+      }
+    });
+  }
+  catch(e)
+  {
+    console.error(e);
+  }
+  
+}
+
+const encrypt = () => {
+
+  try
+  {
+    prompt.get({name: "string", message: "Enter the String"}, (error, result) => {
+      if(!error)
+      {
+        let string = result.string;
+        prompt.get({name: "password", message: "Choose a password (32 characters)"}, (err, result) => {
+          if(!err)
+          {
+            password = result.password;
+            const cipher = crypto.createCipheriv(algorithm, password, iv);
+            let enc = cipher.update(string, 'utf8', 'hex');
+            enc += cipher.final('hex');
+            console.log("Encrypted String: ", enc);
+          }
+        });
+      }
+    });
+  }
+  catch(e)
+  {
+    console.error(e);
+  }
+}
+
+
+prompt.start();
+
+console.log("Encrypt/Decrypt Text using AES 256-bit Encryption\n");
+
+console.log("1. Encrypt");
+console.log("2. Decrypt");
+
+prompt.get({name: "choice", message: "Please enter your choice (1/2)"}, (err, result) => {
+  if(!err)
+  {
+    switch(parseInt(result.choice))
+    {
+      case 1: encrypt(); break;
+      case 2: decrypt(); break;
+      default: console.log("Invalid input.");
+    }
+  }
+});

AES Encryptor-Decryptor/package-lock.json

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+{
+  "name": "aes-encryptor-decryptor",
+  "version": "1.0.0",
+  "description": "AES Encryption/Decryption tool built in NodeJS",
+  "main": "index.js",
+  "devDependencies": {},
+  "scripts": {
+    "start": "node app",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Tanmay Vij",
+  "license": "ISC",
+  "dependencies": {
+    "prompt": "^1.0.0"
+  }
+}