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cleaned

This commit is contained in:
Abhinav Adduri 2017-05-30 14:41:31 -07:00
parent 82eccc6d54
commit 1800f87065
3 changed files with 21 additions and 67 deletions
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5
app.js
View File

@ -29,7 +29,6 @@ app.get('/assets/download/:id', function(req, res) {
res.send('error');
} else {
res.setHeader('Content-Disposition', 'attachment; filename=' + reply);
// res.setHeader('Content-Transfer-Encoding', 'binary');
res.setHeader('Content-Type', 'application/octet-stream');
res.download(__dirname + '/static/' + reply);
@ -54,7 +53,7 @@ app.route('/upload/:id')
client.hset(id, "filename", filename, redis.print);
client.hset(id, "expiration", 0, redis.print);
console.log("Upload Finished of " + filename);
res.send(id); //where to go next
res.send(id);
});
});
});
@ -62,6 +61,6 @@ app.route('/upload/:id')
app.listen(3000, function () {
console.log('Example app listening on port 3000!')
console.log('Portal app listening on port 3000!')
})

6
public/download.html
View File

@ -3,16 +3,10 @@
<head>
<title>Page Title</title>
<script type="text/javascript" src="/file.js"></script>
</head>
<body>
<!--<input id="keyhash" placeholder="Paste the key your friend sent you."/><br />-->
<!--<input id="salt" placeholder="Paste the salt your friend sent you."/><br />-->
<button onclick="download()">DOWNLOAD</button>
</body>
</html>

77
public/file.js
View File

@ -1,18 +1,8 @@
function download() {
// console.log(location.pathname.slice(10, -1));
// var new_salt = ;
// console.log(new_salt);
// console.log(salt);
var xhr = new XMLHttpRequest();
xhr.open('get', '/assets' + location.pathname.slice(0, -1), true);
xhr.responseType = 'blob';
// $.each(SERVER.authorization(), function(k, v) {
// xhr.setRequestHeader(k, v);
// });
// xhr.setRequestHeader('Content-type', 'application/json; charset=utf-8');
xhr.onload = function(e) {
if (this.status == 200) {
@ -22,39 +12,33 @@ function download() {
var fileReader = new FileReader();
fileReader.onload = function() {
arrayBuffer = this.result;
// console.log(arrayBuffer);
var array = new Uint8Array(arrayBuffer);
salt = strToIv(location.pathname.slice(10, -1));
// var new_salt = strToIv(location.pathname.slice(10, -1));
// console.log(new_salt);
// console.log(salt);
window.crypto.subtle.importKey(
"jwk", //can be "jwk" or "raw"
{ //this is an example jwk key, "raw" would be an ArrayBuffer
"jwk",
{
kty: "oct",
k: location.hash.slice(1),
alg: "A128CBC",
ext: true,
},
{ //this is the algorithm options
{
name: "AES-CBC",
},
true, //whether the key is extractable (i.e. can be used in exportKey)
["encrypt", "decrypt"] //can be "encrypt", "decrypt", "wrapKey", or "unwrapKey"
true,
["encrypt", "decrypt"]
)
.then(function(key){
//returns the symmetric key
.then(function(key){
window.crypto.subtle.decrypt(
{
name: "AES-CBC",
iv: salt, //The initialization vector you used to encrypt
iv: salt,
},
key, //from generateKey or importKey above
array //ArrayBuffer of the data
key,
array
)
.then(function(decrypted){
//returns an ArrayBuffer containing the decrypted data
// let original = new Uint8Array(decrypted);
var dataView = new DataView(decrypted);
var blob = new Blob([dataView]);
var downloadUrl = URL.createObjectURL(blob);
@ -67,20 +51,12 @@ function download() {
.catch(function(err){
console.error(err);
});
// console.log(key);
})
.catch(function(err){
console.error(err);
});
};
fileReader.readAsArrayBuffer(blob);
// console.log(blob);
// var downloadUrl = URL.createObjectURL(blob);
// var a = document.createElement("a");
// a.href = downloadUrl;
// // a.download = "feheroes.png";
// document.body.appendChild(a);
// a.click();
} else {
alert('Unable to download excel.')
}
@ -92,53 +68,43 @@ function onChange(event) {
var file = event.target.files[0];
var reader = new FileReader();
reader.onload = function(event) {
// The file's text will be printed here
let self = this;
window.crypto.subtle.generateKey({
name: "AES-CBC",
length: 128
},
true, //whether the key is extractable (i.e. can be used in exportKey)
true,
["encrypt", "decrypt"])
.then(function(key){
//returns a key object
var arrayBuffer = self.result;
var array = new Uint8Array(arrayBuffer);
// binaryString = String.fromCharCode.apply(null, array);
// console.log(binaryString);
// console.log(file);
var random_iv = window.crypto.getRandomValues(new Uint8Array(16));
window.crypto.subtle.encrypt({
name: "AES-CBC",
//Don't re-use initialization vectors!
//Always generate a new iv every time your encrypt!
iv: random_iv},
key, //from generateKey or importKey above
array //ArrayBuffer of data you want to encrypt
)
iv: random_iv },
key,
array)
.then(function(encrypted){
console.log('Send this salt to a friend: [' + random_iv.toString() + ']');
// console.log(arrayBuffer);
//returns an ArrayBuffer containing the encrypted data
var dataView = new DataView(encrypted);
var blob = new Blob([dataView], { type: file.type });
// window.data = encrypted;
var fd = new FormData();
fd.append('fname', file.name);
fd.append('data', blob, file.name);
// console.log(blob);
var xhr = new XMLHttpRequest();
var hex = ivToStr(random_iv);
xhr.open('post', '/upload/' + hex, true);
xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) {
window.crypto.subtle.exportKey("jwk", key).then(function(keydata){
//returns the exported key data
console.log('Go to this URL: http://localhost:3000/download/' + hex + '/#' + keydata.k);
console.log(keydata.k);
alert('Go to this URL: http://localhost:3000/download/' + hex + '/#' + keydata.k);
})
}
};
@ -149,16 +115,12 @@ function onChange(event) {
console.error(err);
});
})
.catch(function(err){
console.error(err);
});
};
reader.readAsArrayBuffer(file);
}
@ -178,7 +140,6 @@ function ivToStr(iv) {
function strToIv(str) {
var iv = new Uint8Array(16);
for (var i = 0; i < str.length; i += 2) {
// console.log(str.charAt(i) + str.charAt(i+1));
iv[i/2] = parseInt((str.charAt(i) + str.charAt(i + 1)), 16);
}