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[security] Add security number to PeerUI to make verification of peer-to-peer encryption possible.

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schlagmichdoch 2023-02-16 02:19:14 +01:00
parent e9b23bfdb0
commit c5d0eaa034
9 changed files with 131 additions and 23 deletions
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28
public/scripts/network.js
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@ -558,7 +558,7 @@ class RTCPeer extends Peer {
_onChannelOpened(event) {
console.log('RTC: channel opened with', this._peerId);
Events.fire('peer-connected', this._peerId);
Events.fire('peer-connected', {peerId: this._peerId, connectionHash: this.getConnectionHash()});
const channel = event.channel || event.target;
channel.binaryType = 'arraybuffer';
channel.onmessage = e => this._onMessage(e.data);
@ -568,6 +568,32 @@ class RTCPeer extends Peer {
this._channel = channel;
}
getConnectionHash() {
const localDescriptionLines = this._conn.localDescription.sdp.split("\r\n");
const remoteDescriptionLines = this._conn.remoteDescription.sdp.split("\r\n");
let localConnectionFingerprint, remoteConnectionFingerprint;
for (let i=0; i<localDescriptionLines.length; i++) {
if (localDescriptionLines[i].startsWith("a=fingerprint:")) {
localConnectionFingerprint = localDescriptionLines[i].substring(14);
break;
}
}
for (let i=0; i<remoteDescriptionLines.length; i++) {
if (remoteDescriptionLines[i].startsWith("a=fingerprint:")) {
remoteConnectionFingerprint = remoteDescriptionLines[i].substring(14);
break;
}
}
const combinedFingerprints = this._isCaller
? localConnectionFingerprint + remoteConnectionFingerprint
: remoteConnectionFingerprint + localConnectionFingerprint;
let hash = cyrb53(combinedFingerprints).toString();
while (hash.length < 16) {
hash = "0" + hash;
}
return hash;
}
_onBeforeUnload(e) {
if (this._busy) {
e.preventDefault();