berty VS session-android

Not written in Rust, but may be Berty can give you some ideas?

Berty is an open source, secure, private, censorship resilient messaging protocol. Berty is designed to work with NO internet connection. Thanks to Bluetooth LE and mDNS, messages can be securely and privately relayed, peer to peer to create an adhoc network. Of course old fashioned networks still work, and if you’re connected to a “hostile” network that’s being surveilled, the Berty protocol can still operate safely and securely thanks to e2e encryption. Super nice!

Berty: Privacy-first messaging app\ (34 comments)

Well, in fact they have a CLI client ( that I haven't tested ) [1] and their site says they're going to be available also for Mac, Windows and Linux.

https://github.com/berty/berty

Other alternatives include Session (free) and Threema (paid - 5€).

Test it by downloading session at getsession.org and DM the bot by starting a new message and sending it to “Simple” (without quotes)

Figured there should be moves to set one up if not - https://getsession.org/

* marketing "Perfect Forward Secrecy" AKA "Forward Secrecy"[0].

I favor Session Private Messenger[1] because it is decentralized and allows third party clients, but Signal enthusiasts warn me that the Session client may, hypothetically, at some future date, integrate a cryptocurrency, as the Signal client already does[2].

[0] https://en.wikipedia.org/wiki/Forward_secrecy

[1] https://getsession.org

[2] https://www.stephendiehl.com/blog/signal.html

If you have a mobile phone number, the domestic intelligence agency knows exactly where you are at all times and any LEO (without a warrant) can also find you. In addition, there have been numerous CCC presentations showing how insecure the global (excluding US) and (separately) US carriers are guilty of promiscuous metadata trafficking ($$) and insecure SS7 setups. As a consequence, for low $, you can go to any one of several shady websites and find the last location of almost any phone number (person unique ID) globally. There are additional varying exploitable vulnerabilities depending on the exact combination of {handset x carrier x country} to impersonate them, tap their line, reveal their exact location, and redirect their phone number through a third-party handset or even a PBX. These are more expensive and some capabilities are forbidden for all but a few selective intelligence uses.

Session (Signal fork) doesn't use phone numbers. It's pretty well-designed overall and uses an onion routing approach. It's already a superset of Signal except it doesn't use phone numbers. https://getsession.org

Also look interesting:

* (unproven) https://www.olvid.io/technology

* (unproven) https://simplex.chat

PS: Using regular TOR on home broadband or cloud servers is relatively risky and inefficient. Sybil attacks on it are common. And to network operators and security agencies it gives an easy "flow tag" of your uplink and exit node data traffic as automatically suspicious.