I am running a MERN app where I store encrypted user data. When retreiving the data, the data should be decrypted.
This is the code that I use for encrypting and decrypting the data
const crypto = require('crypto')
const { SECRET_KEY, SECRET_IV, ENCRYPTION_METHOD } = process.env
if (!SECRET_KEY || !SECRET_IV || !ENCRYPTION_METHOD) {
throw new Error('secretKey, secretIV, and ecnryptionMethod are required')
}
// Generate secret hash with crypto to use for encryption
const key = crypto
.createHash('sha512')
.update(SECRET_KEY)
.digest('hex')
.substring(0, 32)
const encryptionIV = crypto
.createHash('sha512')
.update(SECRET_IV)
.digest('hex')
.substring(0, 16)
// Encrypt data
const encryptData = (data) => {
const cipher = crypto.createCipheriv(ENCRYPTION_METHOD, key, encryptionIV)
return Buffer.from(
cipher.update(data, 'utf8', 'hex') + cipher.final('hex')
).toString('base64') // Encrypts data and converts to hex and base64
}
// Decrypt data
const decryptData = (encryptedData) => {
try {
const buff = Buffer.from(encryptedData, 'base64')
const decipher = crypto.createDecipheriv(ENCRYPTION_METHOD, key, encryptionIV)
const decrypted = decipher.update(buff.toString("utf8"), 'base64', 'utf8') + decipher.final('utf8');
return decrypted;
} catch (error) {
console.error('Decryption Error:', error);
return null;
}
}
When I try to decrypt I get the following error
Decryption Error: Error: error:1C80006B:Provider routines::wrong final block length
at Decipheriv.final (node:internal/crypto/cipher:193:29)
at decryptData (C:UsersjeshuDesktoppizzahubmiddleWareencrypt.js:35:95)
at C:UsersjeshuDesktoppizzahubcontrollersorderController.js:101:30
at Array.forEach (<anonymous>)
at findOrderForShop (C:UsersjeshuDesktoppizzahubcontrollersorderController.js:100:16)
at processTicksAndRejections (node:internal/process/task_queues:96:5) {
library: 'Provider routines',
reason: 'wrong final block length',
code: 'ERR_OSSL_WRONG_FINAL_BLOCK_LENGTH'
}
what should I do
