Node.js使用AES加密大文件 [英] Node.js encrypts large file using AES

问题描述

我尝试使用以下代码加密1 GB的文件。但是Node.js以FATAL ERROR：JS分配失败 - 进程内存不足中止。如何处理？

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?

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');
});   

推荐答案

您可以将加密文件写回磁盘而不是缓冲内存中的整个内容：

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!');
});

这篇关于Node.js使用AES加密大文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！