Node.js encrypts large file using AES
I am trying to use the following code to encrypt a 1GB file. But Node.js abort with "FATAL ERROR: JS Allocation failed - process out of memory". How can I handle this?
var fs = require('fs');
var crypto = require('crypto');
var key = "14189dc35ae35e75ff31d7502e245cd9bc7803838fbfd5c773cdcd79b8a28bbd";
var cipher = crypto.createCipher('aes-256-cbc', key);
var file_cipher = "";
var f = fs.ReadStream("test.txt");
f.on('data', function(d) {
file_cipher = file_cipher + cipher.update(d, 'utf8', 'hex');
});
f.on('end', function() {
file_cipher = file_cipher + cipher.final('hex');
});
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1 answer
You can write the encrypted file back to disk instead of buffering the whole 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!');
});
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