Js-encrypt-decrypt NPM

js-encrypt-decrypt

Installation

npm install js-encrypt-decrypt --save

Step 1 : Import a package

const _encryptPackage = require('js-encrypt-decrypt');

Step 2 : Install crypto moudle and generate your encryption key and IV using crypto module

Step 2.1 : Create ecnryption key.

npm i crypto --save
const crypto = require('crypto');
const encryptionKeyBuffer = crypto.randomBytes(32);
const encryptionKeyType = 'hex'; // you can choose other formats like base64 etc.
const encryptionKey = encryptionKeyBuffer.toString(encryptionKeyType);

Step 2.2 : Create ecnryption IV.

const crypto = require('crypto');
const encryptionIVBuffer = crypto.randomBytes(16);
const encryptionIV = encryptionIVBuffer.toString(encryptionKeyType);

Step 3: Call the the `myEncryptWithIv` fuction to get the encrypted string.

The function accepts below parameters:

text : The text which you want to encrypt
algo : Using which algo you want to perform encryption
encKey: Encryption key which we have generated at step 2.1
encIv: Encryption IV which we have generated at step 2.2
encKeyIvFormat: String format of key and IV // hex or base64 etc.
encTextFormat: Final encrypted string format.

const text = 'Test string';
const algo = 'aes-256-cbc';
const encTextFormat = 'hex';
const finalEncryptString = _encryptPackage.myEncryptWithIv(text, algo, encryptionKey, encryptionIV, encryptionKeyType, encTextFormat);
console.log("This is the finalEncryptedString ==> ", finalEncryptString);

Step 4: Call the the `myDecryptWithIv` fuction to get the decrypted string.

const finalDecryptString = _encryptPackage.myDecryptWithIv(finalEncryptString, algo, encryptionKey, encryptionIV, encryptionKeyType, encTextFormat);
console.log("This is the finalDecryptString ==> ", finalDecryptString);