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changed from using input fields for keys to getting from url

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This commit is contained in:
Abhinav Adduri 2017-05-30 13:55:06 -07:00
parent a45bcf3d35
commit 82eccc6d54
3 changed files with 48 additions and 22 deletions
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4
app.js
View file

@ -38,7 +38,7 @@ app.get('/assets/download/:id', function(req, res) {
}); });
app.route('/upload') app.route('/upload/:id')
.post(function (req, res, next) { .post(function (req, res, next) {
var fstream; var fstream;
@ -50,7 +50,7 @@ app.route('/upload')
fstream = fs.createWriteStream(__dirname + '/static/' + filename); fstream = fs.createWriteStream(__dirname + '/static/' + filename);
file.pipe(fstream); file.pipe(fstream);
fstream.on('close', function () { fstream.on('close', function () {
let id = Math.floor(Math.random()*10000).toString(); let id = req.params.id;
client.hset(id, "filename", filename, redis.print); client.hset(id, "filename", filename, redis.print);
client.hset(id, "expiration", 0, redis.print); client.hset(id, "expiration", 0, redis.print);
console.log("Upload Finished of " + filename); console.log("Upload Finished of " + filename);

4
public/download.html
View file

@ -7,8 +7,8 @@
</head> </head>
<body> <body>
<input id="keyhash" placeholder="Paste the key your friend sent you."/><br /> <!--<input id="keyhash" placeholder="Paste the key your friend sent you."/><br />-->
<input id="salt" placeholder="Paste the salt your friend sent you."/><br /> <!--<input id="salt" placeholder="Paste the salt your friend sent you."/><br />-->
<button onclick="download()">DOWNLOAD</button> <button onclick="download()">DOWNLOAD</button>

60
public/file.js
View file

@ -1,6 +1,13 @@
function download() { function download() {
// console.log(location.pathname.slice(10, -1));
// var new_salt = ;
// console.log(new_salt);
// console.log(salt);
var xhr = new XMLHttpRequest(); var xhr = new XMLHttpRequest();
xhr.open('get', '/assets' + location.pathname, true); xhr.open('get', '/assets' + location.pathname.slice(0, -1), true);
xhr.responseType = 'blob'; xhr.responseType = 'blob';
// $.each(SERVER.authorization(), function(k, v) { // $.each(SERVER.authorization(), function(k, v) {
// xhr.setRequestHeader(k, v); // xhr.setRequestHeader(k, v);
@ -17,12 +24,15 @@ function download() {
arrayBuffer = this.result; arrayBuffer = this.result;
// console.log(arrayBuffer); // console.log(arrayBuffer);
var array = new Uint8Array(arrayBuffer); var array = new Uint8Array(arrayBuffer);
salt = new Uint8Array(JSON.parse(document.getElementById('salt').value)); 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( window.crypto.subtle.importKey(
"jwk", //can be "jwk" or "raw" "jwk", //can be "jwk" or "raw"
{ //this is an example jwk key, "raw" would be an ArrayBuffer { //this is an example jwk key, "raw" would be an ArrayBuffer
kty: "oct", kty: "oct",
k: document.getElementById('keyhash').value, k: location.hash.slice(1),
alg: "A128CBC", alg: "A128CBC",
ext: true, ext: true,
}, },
@ -115,17 +125,21 @@ function onChange(event) {
//returns an ArrayBuffer containing the encrypted data //returns an ArrayBuffer containing the encrypted data
var dataView = new DataView(encrypted); var dataView = new DataView(encrypted);
var blob = new Blob([dataView], { type: file.type }); var blob = new Blob([dataView], { type: file.type });
window.data = encrypted; // window.data = encrypted;
var fd = new FormData(); var fd = new FormData();
fd.append('fname', file.name); fd.append('fname', file.name);
fd.append('data', blob, file.name); fd.append('data', blob, file.name);
// console.log(blob); // console.log(blob);
var xhr = new XMLHttpRequest(); var xhr = new XMLHttpRequest();
var hex = ivToStr(random_iv);
xhr.open('post', '/upload', true); xhr.open('post', '/upload/' + hex, true);
xhr.onreadystatechange = function() { xhr.onreadystatechange = function() {
if (xhr.readyState == XMLHttpRequest.DONE) { if (xhr.readyState == XMLHttpRequest.DONE) {
console.log('Go to this URL: http://localhost:3000/download/'+xhr.responseText); 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);
})
} }
}; };
@ -136,17 +150,7 @@ function onChange(event) {
}); });
window.crypto.subtle.exportKey(
"jwk", //can be "jwk" or "raw"
key)
.then(function(keydata){
//returns the exported key data
console.log('Send this key to a friend: ' + keydata.k);
})
.catch(function(err){
console.error(err);
});
}) })
.catch(function(err){ .catch(function(err){
console.error(err); console.error(err);
@ -158,3 +162,25 @@ function onChange(event) {
reader.readAsArrayBuffer(file); reader.readAsArrayBuffer(file);
} }
function ivToStr(iv) {
let hexStr = '';
for (var i in iv) {
if (iv[i] < 16) {
hexStr += '0' + iv[i].toString(16);
} else {
hexStr += iv[i].toString(16);
}
}
window.hexStr = hexStr;
return hexStr;
}
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);
}
return iv;
}