Nedb Encryption & Decryption

db.js

var Datastore = require('nedb')
const path = require('path')
var crypto = require('crypto');
var assert = require('assert');

var algorithm = 'aes256';
var key = 'password';

var db = {}

db.bookinghistories = new Datastore({
		filename : path.join(__dirname, 'data/bookinghistories.db'), 
		autoload: true,
		afterSerialization: function (doc) {
					console.log(doc);
					var encrypted =doc;
					
						try{
							var ef;
							if(JSON.parse(doc) && isNaN(doc)){
								var cipher = crypto.createCipher(algorithm, key);
								encrypted=cipher.update(JSON.stringify(doc), 'utf8', 'hex') + cipher.final('hex');
								ef = encrypted;
								console.log("Ser" +encrypted);
								return encrypted;
								}
						}catch(e){
								
						}
						da=encrypted;
			
		},
			
		beforeDeserialization : function(doc) {
		console.log(doc);
			if (doc != undefined && doc != "") {
		
				var decipher = crypto.createDecipher(algorithm, key);
		
				var decrypted = decipher.update(doc, 'hex', 'utf8') + decipher.final('utf8');
					console.log("decipher" + decrypted);
				return decrypted;
			}
			//console.log("decipher2    " + da);
			return da;
		}
	});

@kailashyogeshwar85 I don't store the key. I use scryptsy to generate the key with a password each time the app is started.

If you do need to store the key, you can use a package like keytar to store the key using the system's keychain/credential vault.

@jordanbtucker thanks

@jordanbtucker
Hey Jordan, I know this really is not the place - but care to share more about that ? I am trying to achieve the same thing but running into several issues originating from my lack of experience in crypto.

An basic explenation would be very much appreciated!

@RHeijnen I created my own gist. It has two examples: one that prompts the user for a password each time the app starts, and one that stores the password in the system keychain. Both examples are heavily documented.