the web version is intended to work on all platforms without compilation.

a html file-input is simple to add on a webpage. when selecting a file, its loaded into memory. at that point you can encrypt that file and sent it over webrtc... voila; p2p encrypted file transfer.

my approach to a mobile (ios/android) version is using capacitorjs/tauri... its basically a native wrapper with a webview.

P2p encrypted file sharing is sadly still an unsolved problem

thanks for your input, but can you explain what you mean by "unsolved problem"?... p2p encrypted file transfer is demonstrated in the app.

its browser based. it uses webrtc to create p2p connections between browsers. concepts like authentication takes the form of using cryptography capabilities of a typical browser. the storage of data from messages to encryption keys are stored in indexedDB as provided by the browser of your choice. there is an emphesis on client-side browser-based capabilities in all parts of the app.

matrix is a good peer reviewed and generally reccommended solution. this project isnt intended to replace any existing solution. there are many other similar projects out there, but i notice there arent many presented as webapps. this is my attempt.

My app is different because the auth is handled between peers. So it could only every be people you shared your ID with. Security is important for me on this project. Its more important than the app being popular. https://www.reddit.com/r/CyberSecurityAdvice/comments/1ev5kqn/is_this_a_secure_messaging_app/

People should not connect to strangers on this app because of the potential risks of IP exposure... But between people you trust or between your own devices, it should work as expected for testing.

As for allowing links with expiration, you basically have that already with what looks like the login/logout functionality. There is no actual registration, it's just a UI for creating and deleting crypto random ID profiles.

Lemmy and the fediverse is a good idea. The federation makes it so I can see Lemmy posts on mastodon. Etc... id like to draw a parallel in my app with the chat-view and the inteagram-view

I don't think this kind of app could be an alternative to instagram because of it only being P2P with only people you know.

The app is using webRTC which exposes IP addresses, so you wouldn't want something like a global feed on this.

Immich sounds interesting. I'd like to make time to check it out.

https://positive-intentions.com/blog/p2p-social-media

P2P allows for a fairly unexplored infrastructure for content moderation. In this app, the feed of images would only be from people you connect to. For people to connect to you, you have to share a crypto random id.

As a webapp you can clear the site data by logging out. Basically, people cannot randomly connect to you and share things you don't like.

I won't be adding anything like a global feed. Only content that you shared or received.

This doesn't remove the risk of people sending you things you don't like so I'm all ears for an approach to that. I didn't make much progress on the following. If there are any hard features you think would help, let me know. I'd like to make some time to create a "block contact" but it'll take time and consideration to do it properly (so I don't expect it soon). Things like logging out and being able to backup your profile might be enough, but not as user-friendly as it could be.

https://www.reddit.com/r/darknetplan/comments/16qw24o/on_my_decentralized_chat_app_i_want_some_kind_of/

thanks! i'll make a note of that to add. it looks reletively simple to implement in JS, i'll need to check more about browser compatability. tls 1.3 is already in use. i otherwise have wording throughout that users must trust who they connect to.

as for browser extensions, there are CSP headers set to prevent them from accessing personal details.

impossible to update the software

considering the app amounts to a bunch of statics. they wint update themselves if you dont want it to. the app works in many different forms because all form factors can have nuanced security details. its better for security that if people have the ability to selfhost, then they also have the option to choose the form-factor they use based on their preferences.

All nice ideas! I'll take a note. I'd like to make time to make it so on each initial connection it generates new keys too. This should be what I think is forward-secrecy. (Let me know if I'm wrong.)

I don't know the specifics of VPN and it's implication with webrtc, I tried testing and sharing my observations here. I'm open to advice here.

You asked about native builds... Tbh I don't know much about it. I did a short search-engine search and these seem to be well regarded. (Currently?) As a pwa I have a lot of flexibility in the apps form-factor. I was thinking about how easy it would be to make it into a browser extension. (It's not about it being useful, but just providing that extra option.)

I think for my app to be regarded well in security I think it's important for people to use their own instances. The "live app" as I call it is an experimental proof of concept. I wondering about the idea that the app is run on your own forks, but occasionally sync from upstream. As it stands my app is too garbage for anyone to want a copy, but that should eliminate those concerns.

It's also an offline first pwa. Right now it fetches the latest version, but I don't see why I can't create a toggle on the UI to not fetch if there is cache... Again the app is unstable and experimental. I'm working on fixes and improvements as I see it to make a better app. It's a while away from being able to advocate selfhosting to users. But in theory it could address your concerns?

Many attack vectors still indeed exist. With P2P web tech it seems that this allows for an interesting approach and could help reduce the attack-surface. The app is available for iOS, android and desktop. Let me know if you have more concerns.

My bad. I noticed the ego sometimes inflates which seems to stem for naive confidence.

I have observed pitfalls of other apps like mine. In particular one called crypto cat. I'm sure I can't ever be exhaustive enough in learning from other examples.

Reducing metadata is indeed the goal of security and I think I have it reduced to a level where I can exchange webrtc connection data over QR codes or plain text. The IP is exposed at this point but I think this can be further scrubbed with a VPN. Perhaps this is interesting for you. It the minimum example of establishing a webrtc connection with plain text. Not user friendly, but it work without a peer-broker service. In the app I'd like to frame this around exchanging data over QR code.

As for the bitcoin wallet thing, I would think so if it's well tested and ironed out well. As long as I can facilitate the downloading of the data (for backup) and the data syncing between devices then it would be doing that without registering to any backend. There are countless examples of bitcoin exchanges collapsing and taking people's assets. The same could be said with the quality of security provided by chat app providers.

alas, we circle back around to "javascript is inherently insecure".

especially the ones that run inside web browsers like this one does

i dont think this is a valid assersion. it seems wrapped in vagueness about the attack vector. as a webapp it has to be sandboxed in a browser. any vulnerabilities will be related to that. i often hear about browsers having backdoors (which is possible), but theyd be saying that in a world where their operating system is more likely the attack surface. id like to discuss that as a webapp, (and a suitable security stack), this app is secure. take for example any existing secure app (signal/simplex/whatsapp?). they can have all the required bells and whistles for secure/private functionality. but all that encryption can be undermined if a typical low-end phone+os is more than capable of snooping your screen. the same as would apply for my app running in a browser. my arguament is if you dont trust google, you shouldnt use chrome. with a lot of those native offering, your choice is limited to something like apple or android.

this app is also contains builds for iOS, Android and desktop. i dont promote them because im simply not convinced that these native builds are better than what web-technology can provide. a recurring concern is the reliablity of the statics served... it seems thats easy to eliminate if i make it open source and selfhostable. it puts me at a competative disadvantage, but consequently it is unparalelled in the devices it can run on.

APT are a valid concern as any. if this is something youre worried about, i think using this app with a trusted VPN in combination to using disposable profiles, it should be easy to achieve. the mitigation for APT seems simple if that is a concern, but let me know if im overlooking something. webrtc can leak ip addresses and after investigating this, i think you can achieve a reasonable degree of "hiding your personal IP address" based on the information here.

compared with dedicated solutions

the purpose of this project is to create a secure chat app. i want this app to be one of those 'dedicated solutions'. as it stands, its created by a baboon sat in front of chatgpt. but the goal is indeed to create something with unparalelled security. people always seems to avert the idea of this app being secure on the grounds that its JS, but i havent come across any credible way to undermine its security without having compromised the stack above the app (browser/os/peer/network) if any of those are a concern, the app is presented in various distributions from website to native builds.

i hope im not coming across as stubborn here. i really think this app represents a different paradigm in security that nobody is exploring. i dont think ive noticed any lack of interest in decentralized or p2p technology, but nobody seems to be working on this kind of app as a webapp. i find that its not only possible, but i think its relatively trivial to get basic functionality together. i understand that the user-experience isnt great at the moment and will limit the people who want to use it, but on the security grounds alone, i think i could be a real-contender for secure chat.

You conern is well placed. This is why the project has to be open source and I encourage selfhosters.

If this is your concern, I think the offering from other apps is much more shady. While many projects are open source, when provided from an app store you have much less ability to verify the binaries involved match the available source code. It's at this point backdoors can be introduced. (It may be noteworthy that my app serves code unminified for transparency)

As it stands for me app. It's unstable and so I suggest always using the latest version because I will be adding fixes. It is an offline-first pwa. It's possible to make it so it doesn't fetch statics if it already has a cached vopy. At this early stage it doesn't make sense to use this feature because the project is unstable and recieving various fixes and improvements throughout. (There is no audited version of the app.)

As organizations become bigger, I think they can get a better marketing team. The main heavyweight in chat-apps is whatsapp. I think we can agree that it isn't transparent.

Thanks for the advice. I'll try set aside some time for this.

Simplex is good. Mine isn't ready to replace any app or service.

I think my writing is radically improved and maybe even more clear when I use an LLM. In my experience, when I do this, it seems people are more reluctant to reply to a wall of LLM text as it's seen as low-effort.

I think my app has some strange concepts which are hard enough to explain in my own words. Im sure it must look like bs when it's clearly LLM output.

I think just learning to write better can be achieved with more thought and care, but for me it can become a bit obsessive over the use of words and how they might be interpreted. So I usually just go off the cuff.

thanks for your thoughts. im sure others would have similar concerns.

The attacker takes over the server and replaces the JS with a backdoored version

this is a core concern why the app is open source and selfhostable. details are provided in the readme to create a selfhosted fork that runs on github pages. there are several ways around this concern described here.

You are going in the wrong direction

thats unfortunate if you still think so, but id like to hear any other concerns if you have any.

it started of as another branch "staging" and then i just stuck that that as the main branch. the whole app at this point can be considered experiemental. i guess the code isnt good enough to collab at the moment.

as a side project, i dont have much time to work on it and so some things have to fall by the wayside such as code-quality, unit tests, documentation. i think the project isnt mature enough to burden myself with some details as i create this POC. the app as you see it is being used to understand how something like this app can tie together. a proper version will be in the form of the various federated modules which i am creating in a way to address issues seen in the main app.

it might not be an approach other will agree with, but code quality issues are to be resolved in what im aiming for with a microfrontend architecture as described here. i think ive reached a point that i can plan how things can be broken up and it makes sense to have code separated in this way where it can also contain its own documentation.

thanks for your input. its certainly good to understand how others feel about my work and process. and hopefully i can make things more clear as i go along.

thanks for the advice and insights.

in the post is my learnings of possible attack vectors and how to mitigate them. i try to go into more into exhaustive details in the threat model. do you think something is missing?

unfortunaly i think i may be illiterate in funding and business side of things. i have tried to set up serveral donation platforms as seen on the repo. nobody has ever donated. this isnt a shock, considering its experiemental and unstable. i also dont know how to really ask for donations. is it something like saying "support us on Liberapay" at the end of a post? at best i can only hope to get a spike in donation and not enough for a security audit. ive asked around and it seems a decent assesment would cost a decent amount.

i also tried applying for several grants. this was an exhausing experience and so i stopped. it seems the advice is too keep applying until bingo, but from the onset it isnt something i know anything about so no doubt several more rejections. (one particular rejection mentioned it wasnt as innovative as simplex). the whole process here is not understood, enjoyable or fruitful. i think its sometimes hard to explain concepts about the app on reddit and lemmy... im sure those concepts are further difficult to communicate and understand in an appealing grant application.

i think the jorney to get the app to where it is has been a learning experience. not just about the apps technical details, but how to communicate about it publicly. ive regularly seeked advice on the approach. i dont have any qualifications in the field, which is an important challenge many point to. when can it be said that im a subject matter expert? i can create this app and i can answer questions about it, but im not ready for any cryptography exam.

thanks again for you input.