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added loading, hashing, and encrypting events for uploader; decrypting and hashing events for the downloader

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This commit is contained in:
Abhinav Adduri 2017-07-11 13:30:25 -07:00
parent 57c7c475fc
commit bfdab156e6
4 changed files with 69 additions and 3 deletions
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15
frontend/src/fileSender.js
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@ -36,6 +36,8 @@ class FileSender extends EventEmitter {
}
upload() {
const self = this;
self.emit('loading', true);
return Promise.all([
window.crypto.subtle
.generateKey(
@ -53,8 +55,12 @@ class FileSender extends EventEmitter {
const reader = new FileReader();
reader.readAsArrayBuffer(this.file);
reader.onload = function(event) {
self.emit('loading', false);
self.emit('hashing', true);
const plaintext = new Uint8Array(this.result);
window.crypto.subtle.digest('SHA-256', plaintext).then(hash => {
self.emit('hashing', false);
self.emit('encrypting', true);
resolve({plaintext: plaintext, hash: new Uint8Array(hash)});
})
};
@ -75,7 +81,12 @@ class FileSender extends EventEmitter {
},
secretKey,
file.plaintext
),
).then(encrypted => {
self.emit('encrypting', false);
return new Promise((resolve, reject) => {
resolve(encrypted);
})
}),
window.crypto.subtle.exportKey('jwk', secretKey),
new Promise((resolve, reject) => { resolve(file.hash) })
]);
@ -94,7 +105,7 @@ class FileSender extends EventEmitter {
xhr.upload.addEventListener('progress', e => {
if (e.lengthComputable) {
const percentComplete = Math.floor(e.loaded / e.total * 100);
this.emit('progress', percentComplete);
self.emit('progress', percentComplete);
}
});