throw key errors before download begins

This commit is contained in:
Danny Coates 2017-08-03 10:04:09 -07:00
parent 81999f2fc4
commit e36f685bd2
No known key found for this signature in database
GPG Key ID: 4C442633C62E00CB
1 changed files with 41 additions and 37 deletions

View File

@ -7,8 +7,23 @@ class FileReceiver extends EventEmitter {
} }
download() { download() {
return Promise.all([ return window.crypto.subtle
new Promise((resolve, reject) => { .importKey(
'jwk',
{
kty: 'oct',
k: location.hash.slice(1),
alg: 'A128GCM',
ext: true
},
{
name: 'AES-GCM'
},
true,
['encrypt', 'decrypt']
)
.then(key => {
return new Promise((resolve, reject) => {
const xhr = new XMLHttpRequest(); const xhr = new XMLHttpRequest();
xhr.onprogress = event => { xhr.onprogress = event => {
@ -27,12 +42,15 @@ class FileReceiver extends EventEmitter {
const fileReader = new FileReader(); const fileReader = new FileReader();
fileReader.onload = function() { fileReader.onload = function() {
const meta = JSON.parse(xhr.getResponseHeader('X-File-Metadata')); const meta = JSON.parse(xhr.getResponseHeader('X-File-Metadata'));
resolve({ resolve([
{
data: this.result, data: this.result,
aad: meta.aad, aad: meta.aad,
filename: meta.filename, filename: meta.filename,
iv: meta.id iv: meta.id
}); },
key
]);
}; };
fileReader.readAsArrayBuffer(blob); fileReader.readAsArrayBuffer(blob);
@ -41,22 +59,8 @@ class FileReceiver extends EventEmitter {
xhr.open('get', '/assets' + location.pathname.slice(0, -1), true); xhr.open('get', '/assets' + location.pathname.slice(0, -1), true);
xhr.responseType = 'blob'; xhr.responseType = 'blob';
xhr.send(); xhr.send();
}), });
window.crypto.subtle.importKey( })
'jwk',
{
kty: 'oct',
k: location.hash.slice(1),
alg: 'A128GCM',
ext: true
},
{
name: 'AES-GCM'
},
true,
['encrypt', 'decrypt']
)
])
.then(([fdata, key]) => { .then(([fdata, key]) => {
this.emit('decrypting', true); this.emit('decrypting', true);
return Promise.all([ return Promise.all([