目前,我正在使用 multer 库来保存文件系统上的文件。此应用程序使用节点和 Express 。
我可以先将文件保存在服务器上,然后对其进行加密。稍后删除未加密的文件。但是,我不想直接在服务器上添加未加密的文件。所以,我正在寻找一种方法来加密来自前端的传入文件,然后将其保存到磁盘。
const defaultFolder = 'upload';
const filePath = resolveHome(process.env.FILE_STORAGE_LOCATION || defaultFolder);
const key = 'test';
const cipher = crypto.createCipher('aes-256-cbc', key);
const decipher = crypto.createDecipher('aes-256-cbc', key);
const upload = multer({
storage: multer.diskStorage({
destination: filePath,
filename: (req, file, cb) => {
const parts = file.originalname.split('.');
const ext = parts.pop();
const name = parts.join('.');
cb(null, name + '-' + Date.now() + '.' + ext);
},
}),
}).single('file');
app.post('/upload', (req, res) => {
upload(req, res, err => {
if (err) {
return res.status(400).send({
error: 'The request was invalid',
fileName: req.file.originalname,
});
}
return res.status(200).send({
fileName: req.file.filename,
});
});
});
我尝试使用加密库来加密文件,但它无法正常工作。我认为 req.cipher 无效,因为我通常会使用 req.file 来引用该文件。
app.post('/upload', (req, res) => {
upload(req, res, err => {
output = fs.createWriteStream(filePath + '/' + req.file.originalname);
req.pipe(cipher).pipe(output).on('finish', () => console.log('Encrypted file written on disk'));
if (err) {
return res.status(400).send({
error: 'The request was invalid',
fileName: req.file.originalname,
});
}
return res.status(200).send({
fileName: req.file.originalname,
});
});
});
我曾尝试在不使用密码的情况下编写文件,文件为空。添加此信息以防万一。
req.pipe(output).on('finish', () => console.log('Encrypted file written on disk'));
答案 0 :(得分:0)
你能试试吗
app.post('/upload', function(req, res) {
upload(req, res, function(err) {
var fileName = req.file.destination +"\\"+ req.file.filename
var input = fs.createReadStream(fileName);
var output = fs.createWriteStream(fileName + ".enc");
input.pipe(cipher).pipe(output);
output.on('finish', function() {
fs.unlink(fileName, (err) => {
if (err) throw err;
console.log('Encrypted file written to disk!');
res.end('Encrypted file written to disk!')
});
});
})
})