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Merge pull request #412 from mozilla/i151 

throw key errors before download begins
This commit is contained in:
Danny Coates 2017-08-03 10:35:50 -07:00 committed by GitHub
parent 5c793dcde8 e36f685bd2
commit 434f8b56cc
1 changed files with 41 additions and 37 deletions
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44
frontend/src/fileReceiver.js
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@ -7,8 +7,23 @@ class FileReceiver extends EventEmitter {
}
download() {
return Promise.all([
new Promise((resolve, reject) => {
return window.crypto.subtle
.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();
xhr.onprogress = event => {
@ -27,12 +42,15 @@ class FileReceiver extends EventEmitter {
const fileReader = new FileReader();
fileReader.onload = function() {
const meta = JSON.parse(xhr.getResponseHeader('X-File-Metadata'));
resolve({
resolve([
{
data: this.result,
aad: meta.aad,
filename: meta.filename,
iv: meta.id
});
},
key
]);
};
fileReader.readAsArrayBuffer(blob);
@ -41,22 +59,8 @@ class FileReceiver extends EventEmitter {
xhr.open('get', '/assets' + location.pathname.slice(0, -1), true);
xhr.responseType = 'blob';
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]) => {
this.emit('decrypting', true);
return Promise.all([