Add new encryption scheme in chrome addon/firefox webextension
This commit is contained in:
parent
c3fab882f2
commit
36db5056a3
|
|
@ -19,6 +19,7 @@
|
|||
|
||||
function getPref(key)
|
||||
{
|
||||
// Inspired from https://github.com/akiomik/chrome-storage-promise/
|
||||
var promise = new Promise((resolve, reject) => {
|
||||
chrome.storage.local.get(key, (items) => {
|
||||
let err = chrome.runtime.lastError;
|
||||
|
|
|
|||
|
|
@ -18,7 +18,7 @@
|
|||
*/
|
||||
|
||||
var DEBUG = true;
|
||||
var protocol_version = 3;
|
||||
var protocol_version = 4;
|
||||
|
||||
SERVER = {OK : 0, FAILED : 1, RESTART_REQUEST : 2};
|
||||
|
||||
|
|
@ -47,14 +47,24 @@ function debug(s)
|
|||
console.log(s);
|
||||
}
|
||||
|
||||
function generate_request(domain, login, mkey)
|
||||
async function generate_request(domain, login, mkey, iv, old)
|
||||
{
|
||||
var v = "@@" + domain + ";" + login;
|
||||
debug("will encrypt " + v);
|
||||
//debug("with " + a2hex(mkey));
|
||||
enc = encrypt(mkey, v);
|
||||
//debug("res " + a2hex(enc));
|
||||
|
||||
if (old)
|
||||
{
|
||||
var v = "@@" + domain + ";" + login;
|
||||
debug("will encrypt " + v);
|
||||
enc = encrypt_ecb(mkey, v);
|
||||
}
|
||||
else
|
||||
{
|
||||
var v = domain + ";" + login;
|
||||
debug("will encrypt " + v);
|
||||
while ((v.length % 16))
|
||||
v += "\0";
|
||||
hash = await digest(v);
|
||||
v += hash.slice(8, 24);
|
||||
enc = encrypt_cbc(mkey, iv, v);
|
||||
}
|
||||
return enc;
|
||||
}
|
||||
|
||||
|
|
@ -68,23 +78,43 @@ async function ask_server(form, field, logins, domain, wdomain, mkey, submit)
|
|||
|
||||
pbkdf2_level = await getPref("pbkdf2_level");
|
||||
|
||||
mkey = pbkdf2(mkey, salt, pbkdf2_level);
|
||||
global_iv = await simple_pbkdf2(salt, mkey, pbkdf2_level);
|
||||
global_iv = global_iv.slice(0, 16);
|
||||
mkey = crypto_pbkdf2(mkey, salt, pbkdf2_level);
|
||||
|
||||
debug("global_iv " + a2hex(global_iv));
|
||||
|
||||
keys = "";
|
||||
for(a=0, b=logins.length; a<logins.length; a++)
|
||||
for(key_index=0, a=0; a<logins.length; a++, key_index++)
|
||||
{
|
||||
enc = await generate_request(domain, logins[a], mkey);
|
||||
enc = await generate_request(domain, logins[a], mkey, global_iv, 0);
|
||||
keys += (keys.length != 0) ? "&" : "";
|
||||
keys += "k" + a + "=" + a2hex(enc);
|
||||
keys += "k" + key_index + "=" + a2hex(enc);
|
||||
|
||||
if (wdomain != "")
|
||||
{
|
||||
enc = await generate_request(wdomain, logins[a], mkey);
|
||||
enc = await generate_request(wdomain, logins[a], mkey, global_iv, 0);
|
||||
keys += (keys.length != 0) ? "&" : "";
|
||||
keys += "k" + (b++) + "=" + a2hex(enc);
|
||||
keys += "k" + (++key_index) + "=" + a2hex(enc);
|
||||
}
|
||||
}
|
||||
|
||||
if (await getPref("crypto_v1_compatible"))
|
||||
{
|
||||
for(a=0; a<logins.length; a++, key_index++)
|
||||
{
|
||||
enc = await generate_request(domain, logins[a], mkey, global_iv, 1);
|
||||
keys += (keys.length != 0) ? "&" : "";
|
||||
keys += "k" + key_index + "=" + a2hex(enc);
|
||||
|
||||
if (wdomain != "")
|
||||
{
|
||||
enc = await generate_request(wdomain, logins[a], mkey, global_iv, 1);
|
||||
keys += (keys.length != 0) ? "&" : "";
|
||||
keys += "k" + (++key_index) + "=" + a2hex(enc);
|
||||
}
|
||||
}
|
||||
}
|
||||
debug("Keys " + keys);
|
||||
|
||||
var gPassRequest = new XMLHttpRequest();
|
||||
|
|
@ -96,6 +126,7 @@ async function ask_server(form, field, logins, domain, wdomain, mkey, submit)
|
|||
var ciphered_password = "";
|
||||
var server_pbkdf2_level = 0;
|
||||
var server_version = 0;
|
||||
var matched_key = 0;
|
||||
|
||||
var r = this.responseText.split("\n");
|
||||
debug("resp " + r);
|
||||
|
|
@ -143,13 +174,18 @@ async function ask_server(form, field, logins, domain, wdomain, mkey, submit)
|
|||
break;
|
||||
case 3:
|
||||
// Version 3 : nothing special to do
|
||||
case 4:
|
||||
// Version 3 : nothing special to do
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case "matched_key":
|
||||
matched_key = params[1];
|
||||
case "pass":
|
||||
ciphered_password = params[1];
|
||||
break;
|
||||
case "pkdbf2_level":
|
||||
case "pbkdf2_level":
|
||||
server_pbkdf2_level = parseInt(params[1].match(/\d+/)[0], 10);
|
||||
if (server_pbkdf2_level != NaN &&
|
||||
|
|
@ -180,10 +216,20 @@ async function ask_server(form, field, logins, domain, wdomain, mkey, submit)
|
|||
if (ciphered_password != "")
|
||||
{
|
||||
debug("Ciphered password : " + ciphered_password);
|
||||
clear_password = await decrypt(mkey, hex2a(ciphered_password));
|
||||
// Remove trailing \0 and salt
|
||||
clear_password = clear_password.replace(/\0*$/, "");
|
||||
clear_password = clear_password.substr(0, clear_password.length-3);
|
||||
if (matched_key < logins.length)
|
||||
{
|
||||
clear_password = await decrypt_cbc(mkey, global_iv, hex2a(ciphered_password));
|
||||
clear_password = clear_password.replace(/\0*$/, "");
|
||||
clear_password = clear_password.substr(3, clear_password.length);
|
||||
}
|
||||
else
|
||||
// Crypto v1
|
||||
{
|
||||
clear_password = await decrypt_ecb(mkey, hex2a(ciphered_password));
|
||||
// Remove trailing \0 and salt
|
||||
clear_password = clear_password.replace(/\0*$/, "");
|
||||
clear_password = clear_password.substr(0, clear_password.length-3);
|
||||
}
|
||||
debug("Clear password " + clear_password);
|
||||
field.value = clear_password;
|
||||
// Remove gPass event listener and submit again with clear password
|
||||
|
|
@ -321,6 +367,9 @@ function on_sumbit(e)
|
|||
if (password.indexOf("@@") != 0 && password.indexOf("@_") != 0)
|
||||
continue;
|
||||
|
||||
// Remove current value to limit master key stealing
|
||||
field.value = "";
|
||||
|
||||
mkey = password.substring(2);
|
||||
|
||||
e.preventDefault();
|
||||
|
|
@ -328,22 +377,21 @@ function on_sumbit(e)
|
|||
var ret = ask_server(form, field, logins, domain, wdomain, mkey, (password.indexOf("@@") == 0));
|
||||
|
||||
ret.then(function(ret){
|
||||
switch(ret)
|
||||
{
|
||||
case SERVER.OK:
|
||||
break;
|
||||
case SERVER.FAILED:
|
||||
if (logins !== all_logins)
|
||||
switch(ret)
|
||||
{
|
||||
/*ret = */ask_server(form, field, all_logins, domain, wdomain, mkey, (password.indexOf("@@") == 0));
|
||||
/*if (ret == SERVER.OK)
|
||||
break;};*/
|
||||
}
|
||||
break;
|
||||
case SERVER.RESTART_REQUEST:
|
||||
i = -1; // Restart loop
|
||||
break;
|
||||
}});
|
||||
case SERVER.OK:
|
||||
break;
|
||||
case SERVER.FAILED:
|
||||
if (logins !== all_logins)
|
||||
{
|
||||
ask_server(form, field, all_logins, domain, wdomain, mkey, (password.indexOf("@@") == 0));
|
||||
}
|
||||
break;
|
||||
case SERVER.RESTART_REQUEST:
|
||||
i = -1; // Restart loop
|
||||
break;
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -373,15 +421,17 @@ document_loaded(document);
|
|||
|
||||
async function self_test()
|
||||
{
|
||||
mkey = pbkdf2("password", "salt", 4096);
|
||||
res = await encrypt(mkey, "DDDDDDDDDDDDDDDD");
|
||||
reference = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
|
||||
mkey = crypto_pbkdf2("password", "salt", 4096);
|
||||
res = await encrypt_ecb(mkey, "DDDDDDDDDDDDDDDD");
|
||||
|
||||
reference = new Uint8Array([0xc4, 0x76, 0x01, 0x07, 0xa1, 0xc0, 0x2f, 0x22, 0xee, 0xbe, 0x60,
|
||||
0xff, 0x65, 0x33, 0x5b, 0x9e]);
|
||||
if (res != ab2str(reference))
|
||||
{
|
||||
console.log("Self test ERROR ! ");
|
||||
console.log("Self test ERROR !");
|
||||
}
|
||||
else
|
||||
console.log("All is OK ! ");
|
||||
console.log("Self test OK !");
|
||||
}
|
||||
|
||||
// self_test();
|
||||
self_test();
|
||||
|
|
|
|||
|
|
@ -18,7 +18,8 @@
|
|||
*/
|
||||
|
||||
var default_preferences = {"pbkdf2_level": 1000,
|
||||
"account_url": "https://gpass-demo.soutade.fr/demo"};
|
||||
"account_url": "https://gpass-demo.soutade.fr/demo",
|
||||
"crypto_v1_compatible": true};
|
||||
|
||||
var browser = browser || chrome;
|
||||
var crypto = crypto || window.crypto;
|
||||
|
|
@ -52,18 +53,12 @@ function str2ab(str) {
|
|||
return bufView;
|
||||
}
|
||||
|
||||
function returnResult(result) { return result;}
|
||||
function onError(error) { console.error(error); }
|
||||
|
||||
function pbkdf2(mkey, salt, level)
|
||||
function crypto_pbkdf2(mkey, salt, level)
|
||||
{
|
||||
debug("Process pbkdf2 with " + mkey);
|
||||
|
||||
AESCBC = {
|
||||
name: "AES-CBC",
|
||||
length: 256,
|
||||
}
|
||||
level=1000;
|
||||
|
||||
var key = str2ab(mkey);
|
||||
return crypto.subtle.importKey("raw", key, {name: "PBKDF2"}, false, ["deriveBits", "deriveKey"])
|
||||
|
|
@ -87,21 +82,52 @@ function pbkdf2(mkey, salt, level)
|
|||
});
|
||||
}
|
||||
|
||||
function _encrypt(mkey, data)
|
||||
function simple_pbkdf2(mkey, salt, level)
|
||||
{
|
||||
AESCBC = {
|
||||
name: "AES-CBC",
|
||||
length: 256,
|
||||
}
|
||||
|
||||
var key = str2ab(mkey);
|
||||
return crypto.subtle.importKey("raw", key, {name: "PBKDF2"}, false, ["deriveBits", "deriveKey"])
|
||||
.then(function(key){
|
||||
//sha-256
|
||||
return crypto.subtle.deriveKey({
|
||||
name: "PBKDF2",
|
||||
salt: str2ab(salt),
|
||||
iterations: level,
|
||||
hash: "SHA-256",
|
||||
}, key, AESCBC, true, ["unwrapKey", "wrapKey"])
|
||||
.then(function(key) {
|
||||
return crypto.subtle.exportKey("raw", key)
|
||||
.then(function (key) {
|
||||
return ab2str(key);
|
||||
});
|
||||
})
|
||||
.catch(function(err){
|
||||
console.log("Error derive key " + err);
|
||||
});
|
||||
})
|
||||
.catch(function(err) {
|
||||
console.log("Error import key" + err);
|
||||
});
|
||||
}
|
||||
|
||||
function _encrypt(mkey, iv, data)
|
||||
{
|
||||
while ((data.length % 16))
|
||||
data += "\0";
|
||||
|
||||
debug("Encrypt " + data);
|
||||
debug("Encrypt " + iv.length);
|
||||
|
||||
data = str2ab(data);
|
||||
|
||||
nulliv = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
|
||||
|
||||
promise = mkey.then(function(mkey){
|
||||
return crypto.subtle.encrypt({
|
||||
name: "AES-CBC",
|
||||
iv: nulliv
|
||||
iv: iv
|
||||
}, mkey, data)})
|
||||
.then(function(encrypted) {
|
||||
return ab2str(encrypted);
|
||||
|
|
@ -113,13 +139,14 @@ function _encrypt(mkey, data)
|
|||
return promise;
|
||||
}
|
||||
|
||||
async function _decrypt(mkey, data)
|
||||
async function _decrypt(mkey, iv, data)
|
||||
{
|
||||
while ((data.length % 16))
|
||||
data += "\0";
|
||||
|
||||
nulliv = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
|
||||
pkcs7_padding = new Uint8Array([16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16]);
|
||||
pkcs7_padding = await _encrypt(mkey, ab2str(pkcs7_padding));
|
||||
pkcs7_padding = await _encrypt(mkey, nulliv, ab2str(pkcs7_padding));
|
||||
|
||||
debug("Decrypt " + data);
|
||||
|
||||
|
|
@ -130,7 +157,7 @@ async function _decrypt(mkey, data)
|
|||
promise = mkey.then(function(mkey){
|
||||
return crypto.subtle.decrypt({
|
||||
name: "AES-CBC",
|
||||
iv: nulliv
|
||||
iv: iv
|
||||
}, mkey, data)})
|
||||
.then(function(decrypted) {
|
||||
return ab2str(decrypted);
|
||||
|
|
@ -142,36 +169,63 @@ async function _decrypt(mkey, data)
|
|||
return promise;
|
||||
}
|
||||
|
||||
async function encrypt(mkey, data)
|
||||
async function encrypt_ecb(mkey, data)
|
||||
{
|
||||
var result = "";
|
||||
|
||||
nulliv = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
|
||||
|
||||
while (data.length > 16)
|
||||
{
|
||||
res = await _encrypt(mkey, data.slice(0, 16));
|
||||
res = await _encrypt(mkey, nulliv, data.slice(0, 16));
|
||||
// Remove PKCS7 padding
|
||||
result += res.slice(0, 16);
|
||||
data = data.slice(16);
|
||||
}
|
||||
res = await _encrypt(mkey, data);
|
||||
res = await _encrypt(mkey, nulliv, data);
|
||||
result += res.slice(0, 16);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
async function decrypt(mkey, data)
|
||||
async function decrypt_ecb(mkey, data)
|
||||
{
|
||||
var result = "";
|
||||
|
||||
nulliv = new Uint8Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);
|
||||
|
||||
while (data.length > 16)
|
||||
{
|
||||
res = await _decrypt(mkey, data.slice(0, 16));
|
||||
res = await _decrypt(mkey, nulliv, data.slice(0, 16));
|
||||
// Remove PKCS7 padding
|
||||
result += res.slice(0, 16);
|
||||
data = data.slice(16);
|
||||
}
|
||||
res = await _decrypt(mkey, data);
|
||||
res = await _decrypt(mkey, nulliv, data);
|
||||
result += res.slice(0, 16);
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
async function encrypt_cbc(mkey, iv, data)
|
||||
{
|
||||
var result = await _encrypt(mkey, str2ab(iv), data);
|
||||
|
||||
// Remove PKCS7 padding
|
||||
return result.slice(0, result.length-16);
|
||||
}
|
||||
|
||||
async function decrypt_cbc(mkey, iv, data)
|
||||
{
|
||||
var result = await _decrypt(mkey, str2ab(iv), data);
|
||||
|
||||
// Remove PKCS7 padding
|
||||
return result.slice(0, result.length-16);
|
||||
}
|
||||
|
||||
async function digest(data)
|
||||
{
|
||||
return crypto.subtle.digest("SHA-256", str2ab(data)).then(function (hash) {
|
||||
return ab2str(hash);
|
||||
});
|
||||
}
|
||||
|
|
|
|||
|
|
@ -10,6 +10,9 @@
|
|||
<br/>
|
||||
<b>PBKDF2 level</b> Number of iterations used to derivate master key <input id="pbkdf2" type="number"/><br />
|
||||
<br/>
|
||||
<br/>
|
||||
<b>Crypto v1 compatible </b> Compatible with old crypto schema (AES ECB). Use it for encrypted passwords with server <= 0.7 <input id="crypto_v1_compatible" type="checkbox"/><br />
|
||||
<br/>
|
||||
<input type="button" id="save" value="Save"/>
|
||||
|
||||
<script type="text/javascript" src="options.js">
|
||||
|
|
|
|||
|
|
@ -1,13 +1,16 @@
|
|||
var default_preferences = {"pbkdf2_level": 1000,
|
||||
"account_url": "https://gpass-demo.soutade.fr/demo"};
|
||||
"account_url": "https://gpass-demo.soutade.fr/demo",
|
||||
"crypto_v1_compatible": true};
|
||||
|
||||
function save() {
|
||||
var account_url = document.getElementById('account_url').value;
|
||||
var pbkdf2 = document.getElementById('pbkdf2').value;
|
||||
var crypto_v1_compatible = document.getElementById('crypto_v1_compatible').checked;
|
||||
|
||||
chrome.storage.local.set({
|
||||
'account_url': account_url,
|
||||
'pbkdf2': pbkdf2,
|
||||
'crypto_v1_compatible': crypto_v1_compatible,
|
||||
}, function() {
|
||||
alert('Saved');
|
||||
});
|
||||
|
|
@ -23,9 +26,15 @@ chrome.storage.local.get(null, function(prefs) {
|
|||
pbkdf2 = default_preferences['pbkdf2_level'];
|
||||
else
|
||||
pbkdf2 = prefs['pbkdf2_level'];
|
||||
|
||||
if (!prefs.hasOwnProperty("crypto_v1_compatible"))
|
||||
crypto_v1_compatible = default_preferences['crypto_v1_compatible'];
|
||||
else
|
||||
crypto_v1_compatible = prefs['crypto_v1_compatible'];
|
||||
|
||||
document.getElementById('account_url').value = account_url;
|
||||
document.getElementById('pbkdf2').value = pbkdf2;
|
||||
document.getElementById('crypto_v1_compatible').checked = crypto_v1_compatible;
|
||||
});
|
||||
|
||||
document.getElementById('save').addEventListener("click", save);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user