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Encryption and Decryption Data/Password in Angular

You can use crypto.js to encrypt data. We have used 'crypto-js'. Follow the below steps,
Steps 1 – Install CryptoJS using below NPM commands in your project directory

npm install crypto-js --save
npm install @types/crypto-js –save

After installing both above commands it looks like –

NPM Command 1 -> npm install crypto-js --save

NPM Command 2 -> npm install @types/crypto-js --save

Steps 2 - Add the script path in “angular.json” file.

"scripts": [
              "../node_modules/crypto-js/crypto-js.js"
            ]

Steps 3 – Create a service class “EncrDecrService” for encrypts and decrypts get/set methods.
Import “CryptoJS” in the service for using encrypt and decrypt get/set methods.

import { Injectable } from '@angular/core';
import * as CryptoJS from 'crypto-js';

@Injectable({
  providedIn: 'root'
})

export class EncrDecrService {
  constructor() { }
  //The set method is use for encrypt the value.
  set(keysvalue){
    var key = CryptoJS.enc.Utf8.parse(keys);
    var iv = CryptoJS.enc.Utf8.parse(keys);
    var encrypted = CryptoJS.AES.encrypt(CryptoJS.enc.Utf8.parse(value.toString()), key,
    {
        keySize: 128 / 8,
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
    });

    return encrypted.toString();
  }

  //The get method is use for decrypt the value.
  get(keysvalue){
    var key = CryptoJS.enc.Utf8.parse(keys);
    var iv = CryptoJS.enc.Utf8.parse(keys);
    var decrypted = CryptoJS.AES.decrypt(valuekey, {
        keySize: 128 / 8,
        iv: iv,
        mode: CryptoJS.mode.CBC,
        padding: CryptoJS.pad.Pkcs7
    });

    return decrypted.toString(CryptoJS.enc.Utf8);
  }
}

Steps 4 - Import this service class “EncrDecrService” in the angular module class “NgModule” and then add this service in the providers.


import {EncrDecrServicefrom '../app/EncrDecr/encr-decr.service';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule
  ],
  providers: [EncrDecrService],
  bootstrap: [AppComponent]
})
export class AppModule { }


Steps 5 - Finally, use your encrypted and decrypted service methods in your component class.

import { ComponentOnInit } from '@angular/core';
import {EncrDecrServicefrom '../EncrDecr/encr-decr.service';

@Component({
  selector: 'app_user',
  templateUrl: './user.component.html',
  styleUrls: ['./user.component.css']
})
export class UserComponent implements OnInit {

  constructor(private EncrDecrEncrDecrService) {   }

  ngOnInit() {
    var encrypted = this.EncrDecr.set('123456$#@$^@1ERF''password@123456');
    var decrypted = this.EncrDecr.get('123456$#@$^@1ERF'encrypted);
   
    console.log('Encrypted :' + encrypted);
    console.log('Encrypted :' + decrypted);
  }
}

Steps 6 - See the output in your application browser's console

By Anil Singh | Rating of this article (*****)

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