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lay groundwork for simple dm encryption

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This commit is contained in:
Mystikfluu 2022-08-19 18:36:26 +02:00
parent cda662f270
commit f8ba9fd95b
4 changed files with 70 additions and 3 deletions
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28
js/dms.js
View File

@ -39,6 +39,21 @@ socket.addEventListener("message", async function (event) {
var posting_id = undefined;
var cd = true //inversed "cooldown"
let encryption_keys = ""
function set_keys(s_key) {
let key = extend(s_key,512)
let msgkey = key.substring(0,128)
let sigkey = key.substring(129,512)
let packed = pack_keys({
signkey: sigkey,
messagekey: msgkey
})
encryption_keys = packed
}
async function postMessage() {
let len = document.getElementById("post-text").value.length
if(len >= 1001) {
@ -46,12 +61,21 @@ async function postMessage() {
return
}
if(cd && posting_id!=undefined) {
let r = await post("/api/dms/post",{"message":document.getElementById("post-text").value,"reply_id":reply_id,"receiver":currentChannel,"pid": posting_id})
cd = false
let text = document.getElementById("post-text").value
if(typeof encrypt == "function" && encryption_keys != "") {
text = encrypt(test,{
packed: encryption_keys
})
}
let r = await post("/api/dms/post",{"message":text,"reply_id":reply_id,"receiver":currentChannel,"pid": posting_id})
update_pid()
if(window.location.href.split("?mention=")[1])location.replace('/posts');
document.getElementById("post-text").value=""
unreply()
cd = false
setTimeout(function(){
cd = true
},200)

36
js/extend_key.js Normal file
View File

@ -0,0 +1,36 @@
var sha256=function a(b){function c(a,b){return a>>>b|a<<32-b}for(var d,e,f=Math.pow,g=f(2,32),h="length",i="",j=[],k=8*b[h],l=a.h=a.h||[],m=a.k=a.k||[],n=m[h],o={},p=2;64>n;p++)if(!o[p]){for(d=0;313>d;d+=p)o[d]=p;l[n]=f(p,.5)*g|0,m[n++]=f(p,1/3)*g|0}for(b+="\x80";b[h]%64-56;)b+="\x00";for(d=0;d<b[h];d++){if(e=b.charCodeAt(d),e>>8)return;j[d>>2]|=e<<(3-d)%4*8}for(j[j[h]]=k/g|0,j[j[h]]=k,e=0;e<j[h];){var q=j.slice(e,e+=16),r=l;for(l=l.slice(0,8),d=0;64>d;d++){var s=q[d-15],t=q[d-2],u=l[0],v=l[4],w=l[7]+(c(v,6)^c(v,11)^c(v,25))+(v&l[5]^~v&l[6])+m[d]+(q[d]=16>d?q[d]:q[d-16]+(c(s,7)^c(s,18)^s>>>3)+q[d-7]+(c(t,17)^c(t,19)^t>>>10)|0),x=(c(u,2)^c(u,13)^c(u,22))+(u&l[1]^u&l[2]^l[1]&l[2]);l=[w+x|0].concat(l),l[4]=l[4]+w|0}for(d=0;8>d;d++)l[d]=l[d]+r[d]|0}for(d=0;8>d;d++)for(e=3;e+1;e--){var y=l[d]>>8*e&255;i+=(16>y?0:"")+y.toString(16)}return i};
function hash(str,salt,num) {
if(!num && num!==0)num=1;
if(!str)return;
if(!salt)salt=""
let ret = str;
for (let i = 0; i < num; i++) {
ret = sha256(ret+salt)
}
return ret;
}
function extend(key,len) {
let temp = []
let out = []
len = len || 265
let hashes = 0
for(let i=0;i<len/64;i++) {
temp[0] = hash(key,"",++hashes)
temp[1] = hash(key,"",++hashes)
temp[2] = hash(key,"",++hashes)
out[out.length] = hash(temp[0]+temp[1],temp[2],++hashes)
temp = []
}
return out.join("").substring(0,len)
}

7
routes/api/dms/PersonalMessages.js
View File

@ -1,4 +1,4 @@
const xor = require("../../../extra_modules/xor.js")
const unsafeencrypt = require("unsafe_encrypt")
module.exports = {
"setup": function(router,con,server) {
@ -41,6 +41,11 @@ module.exports = {
});
})
router.get("/api/dms/encrypt.js", async function(req,res) {
res.set("Access-Control-Allow-Origin","*")
res.send(unsafeencrypt.web_version())
})
//
router.get("/api/dms/getDM", async function(req,res) {
res.set("Access-Control-Allow-Origin","*")

2
views/dms.html
View File

@ -9,6 +9,8 @@
<script type="text/javascript" src="/js/htmlescape.js"></script>
<script type="text/javascript" src="/js/addnavbar.js"></script>
<script type="text/javascript" src="/js/markdown.js"></script>
<script type="text/javascript" src="/js/extend_key.js"></script>
<script type="text/javascript" src="/api/dms/encrypt.js"></script>
<script src="/js/warn_message.js" charset="utf-8"></script>
</head>
<body>