Html5视频元素播放从内存解密数据

Question

我正在尝试用nodejs和电子构建一个桌面应用程序，播放加密(加密内置模块)，嵌入mp4视频文件。

这是我的代码，将解密的数据写入文件并通过它播放数据。有没有人可以帮助我，所以我的视频播放器播放的数据通过内存而不写入数据到文件?

var key ="12345678asdfghjk"
var keyBuf = new Buffer(key);
var inputStream = fs.createReadStream(file+"c");
var outputStream = fs.createWriteStream(file+"d");
var cipher = crypto.createDecipher("aes-128-cbc", keyBuf);
inputStream.on('data', function(data) {
var buf = new Buffer(cipher.update(data), 'binary');
outputStream.write(buf);
});
inputStream.on('end', function() {
try {
var buf = new Buffer(cipher.final('binary'), 'binary');
outputStream.write(buf);
outputStream.end();

outputStream.on('close', function() {       
const introVideo=document.getElementById("introVideo");
introVideo.src = "data:video/mp4;base64,"+fs.readFileSync(file+"d", "base64")
introVideo.play()

});
} catch(e) {
console.log(e)
}
});

Answer 1

decrypt(file) {
return new Promise((resolve, reject) => { 
const fs = require('fs'); 
const crypto = require('crypto'); 
const Buffer = require('buffer').Buffer; 
const pass = new Buffer('"+key+"'); 
const inputStream = fs.createReadStream(file); 
const cipher = crypto.createDecipher('aes-128-cbc', pass); 
var base64encodedData = ''; 
inputStream.on('data', function(data) { 
base64encodedData += new Buffer(
cipher.update(data, 'binary', 'base64'),         
'binary'
); 
}); 
inputStream.on('end', function() {
base64encodedData += new Buffer(cipher.final('base64'), 'binary');
return resolve(base64encodedData); 
}); 
}); 
}   

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