77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
|
function saveArrayBufferToLocalStorage(key, buffer) {
|
||
|
|
const base64String = arrayBufferToBase64(buffer);
|
||
|
|
localStorage.setItem(key, base64String);
|
||
|
|
}
|
||
|
|
|
||
|
|
function getArrayBufferFromLocalStorage(key) {
|
||
|
|
const base64String = localStorage.getItem(key);
|
||
|
|
if (base64String) {
|
||
|
|
return base64ToArrayBuffer(base64String);
|
||
|
|
}
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
function arrayBufferToBase64(buffer) {
|
||
|
|
const uint8Array = new Uint8Array(buffer);
|
||
|
|
return btoa(String.fromCharCode.apply(null, uint8Array)).replace(/\+/g, '~').replace(/\//g, '_').replace(/=+$/, '');
|
||
|
|
}
|
||
|
|
|
||
|
|
function base64ToArrayBuffer(base64) {
|
||
|
|
const binaryString = atob(base64.replace(/_/g, '/').replace(/~/g, '+'));
|
||
|
|
const length = binaryString.length;
|
||
|
|
const buffer = new ArrayBuffer(length);
|
||
|
|
const uint8Array = new Uint8Array(buffer);
|
||
|
|
for (let i = 0; i < length; i++) {
|
||
|
|
uint8Array[i] = binaryString.charCodeAt(i);
|
||
|
|
}
|
||
|
|
return buffer;
|
||
|
|
}
|
||
|
|
|
||
|
|
function generateKeyPair() {
|
||
|
|
return window.crypto.subtle.generateKey(
|
||
|
|
{
|
||
|
|
name: "RSA-OAEP",
|
||
|
|
modulusLength: 4096,
|
||
|
|
publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
|
||
|
|
hash: {name: "SHA-512"}
|
||
|
|
},
|
||
|
|
true,
|
||
|
|
["encrypt", "decrypt"]
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
async function main() {
|
||
|
|
const urlParams = new URLSearchParams(window.location.search);
|
||
|
|
const encodedData = urlParams.get('encoded');
|
||
|
|
const doNothing = urlParams.get('donothing');
|
||
|
|
let keyShareUri = "https://auth.hectabit.org/aeskeyshare"
|
||
|
|
if (localStorage.getItem("keyShareUri") !== null) {
|
||
|
|
keyShareUri = localStorage.getItem("keyShareUri")
|
||
|
|
}
|
||
|
|
if (localStorage.getItem("referrer") === null) {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if (doNothing !== "true") {
|
||
|
|
if (encodedData) {
|
||
|
|
const decodedData = base64ToArrayBuffer(encodedData);
|
||
|
|
const decryptedData = window.crypto.subtle.decrypt(
|
||
|
|
{
|
||
|
|
name: "RSA-OAEP"
|
||
|
|
},
|
||
|
|
await crypto.subtle.importKey("pkcs8", getArrayBufferFromLocalStorage("key"), {
|
||
|
|
name: "RSA-OAEP",
|
||
|
|
hash: {name: "SHA-512"}
|
||
|
|
}, true, ["decrypt"]),
|
||
|
|
decodedData
|
||
|
|
);
|
||
|
|
localStorage.setItem("DONOTSHARE-EXCHANGED-KEY", new TextDecoder().decode(await decryptedData));
|
||
|
|
window.location.replace(localStorage.getItem("referrer"))
|
||
|
|
} else {
|
||
|
|
let keyPair = await generateKeyPair();
|
||
|
|
saveArrayBufferToLocalStorage("key", await crypto.subtle.exportKey("pkcs8", keyPair.privateKey));
|
||
|
|
window.location.replace(keyShareUri + "?pubkey=" + btoa(String.fromCharCode.apply(null, new Uint8Array(await crypto.subtle.exportKey("spki", keyPair.publicKey)))).replace(/\+/g, '~').replace(/\//g, '_').replace(/=+$/, '') + "&token=" + localStorage.getItem("BURGERAUTH-RDIR-TOKEN"));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
window.onload = main;
|