Node.js encrypts large file using AES

Question

I try to use following code to encrypt a file of 1 GB. But Node.js abort with \"FATAL ERROR: JS Allocation failed - process out of memory\". How can I deal with it?

Answer 1

You could write the encrypted file back to disk instead of buffering the entire thing in memory:

var fs = require('fs');
var crypto = require('crypto');

var key = '14189dc35ae35e75ff31d7502e245cd9bc7803838fbfd5c773cdcd79b8a28bbd';
var cipher = crypto.createCipher('aes-256-cbc', key);
var input = fs.createReadStream('test.txt');
var output = fs.createWriteStream('test.txt.enc');

input.pipe(cipher).pipe(output);

output.on('finish', function() {
  console.log('Encrypted file written to disk!');
});