//code from https://codeforgeek.com/encrypt-and-decrypt-data-in-node-js/
const crypto = require("crypto")
const algorithm = "aes-256-cbc" //use the aes256 encryption algorithm
const key = "pineapple whalespineapple whales";
//key has to be 32 chars long
const iv = "pineapple whales";
//iv has to be 16 chars long
/*
const key = process.ENV.KEY
const iv = process.ENV.IV
if (key.length !== 32 || iv.length !==) {
console.error("Key and IV lengths are invalid")
}
*/
//key, iv are secrets and used to decrypt
//more info: https://nodejs.org/en/knowledge/cryptography/how-to-use-crypto-module/
encrypt = (text) => {
var cipher = crypto.createCipheriv('aes-256-cbc', Buffer.from(key), iv);
//syntax: createCipheriv(algorithm, key, iv ( or initialization vector))
let encrypted = cipher.update(text);
encrypted = Buffer.concat([encrypted, cipher.final()]);
//cipher.final returns "Any remaining enciphered contents"
//https://nodejs.org/api/crypto.html#crypto_cipher_final_outputencoding
return encrypted;
}
decrypt = (text) => {
var encryptedText = Buffer.from(text);
var decipher = crypto.createDecipheriv('aes-256-cbc', Buffer.from(key), iv); //note the presence of iv
var decrypted = decipher.update(encryptedText);
decrypted = Buffer.concat([decrypted, decipher.final()]);
return decrypted.toString("utf8");
//decrypted returns a buffer of hexadecimal values. Convert them to utf8 values.
}
var encryptedValue = encrypt("hello world")
console.log(encryptedValue.toJSON())
console.log(encryptedValue.toString('base64'))
console.log(encryptedValue.toString('utf8'))
console.log(encryptedValue.toString("hex"))
decrypt(encryptedValue.toString('utf8'))
//var decryptedValue = decrypt(encryptedValue)
console.log(Buffer.from())
/*
var resultArr = encryptedValue
.toJSON().data
console.log(resultArr)
console.log(decrypt(resultArr))
*/
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