Tutanota makes encryption easy VS Zulip

Hi HN, we are the developers from Tuta (formerly Tutanota), the German end-to-end encrypted email provider, and we recently released the world's first post-quantum encryption for email.

We have included a full technical write-up of the cryptography involved in these changes and we have released it for open public review.

This document specifies TutaCrypt, a protocol designed for hybrid email encryption in Tuta Mail. The protocol combines a classical Elliptic-Curve-Diffie-Hellman key exchange with a post-quantum KEM. The goal is to replace the usage of RSA in Tuta Mail.

In the remainder of this document we describe some preliminaries such as the cryptographic primitives used. We define the core algorithms of the protocol and describe the flow of messages between the communicating parties. Finally, we discuss the security properties and some limitations of the protocol in its current form.

We are eager for your constructive feedback. All cryptography related source code is available for review and experimenting here: https://github.com/tutao/tutanota/blob/master/src/api/worker...

If you have any questions or comments related to post-quantum cryptography please let us know in the comments!

Tutanota - Free secure email account service provider with built-in end-to-end encryption, no ads, no tracking. Free 1GB storage. Which is also partially open source, so you can self-host.

You are probably using a window manager and Electron is not able to detect the secret service backend you have installed. We recently switched to Electron’s built in api for storing credentials, which is the reason for this issue. https://github.com/tutao/tutanota/issues/6265

Tuta Mail (version 3.119.3): Encrypted email & calendar service - easy to use, secure by design.

A look at tuta.com and tutanota.com demonstrates that Tuta is using an Amazon Start of Authority (SOA) DNS record and 4 corresponding Amazon Name Server (NS) DNS records.

rich coming from tuta who still lack a onion based login. this ticket from 2018 was locked as off-topic. https://github.com/tutao/tutanota/issues/528

as lenin said, the best way to control the opposition is to lead it. for me, unless the company has been raided by the government they simply cannot be trusted.

apple proudly advertises privacy billboards while sharing everything they are asked under shadow laws. absolute hypocrisy and double standards. but then they wouldnt be where they are without government money and favours.

Have a non business paid account. Can you change your current tutanota.com email to the tuta.com email?

I have an at tutanota.com account. All of a sudden, this evening, it disconnected and I haven't been able to re-access my account. It actually seems like the whole platform is down, but maybe that's just the context from my devices.

I have a fairly recent free account that I believe was on the domain tutanota.com which I can no longer log into.

Zulip — Real-time chat with a unique email-like threading model. The free plan includes 10,000 messages of search history and File storage up to 5 GB. also, it provides a self-hostable open-source version.

(1) Zulip Chat - https://zulip.com/ - seems to be reasonably popular, but more people should know about it

I’ve been using it for over 5 years now [1], and it’s as good as ever. It’s way faster than any other chat app I’ve used. It has a good UI and conversation model. It has a simple and functional API that lets me curl threads and write blog posts based on them.

(only problem is that I Ctrl-+ in my browser to make the font bigger – I think it’s too dense for most people)

(2) re2c regex to state machine compiler - https://re2c.org

A gem from the 90’s, which people have done a great job maintaining and improving (getting Go and Rust target support in the last few years). I started using it in 2016, and used for a new program a few months ago. I came to the conclusion that it should have been built into C, because C has shitty string processing – and Ken Thompson both invented C AND brought regular languages to computing !!

In comparison, treesitter lexers are very low level, fiddly, and error prone. I recently saw dozens of ad hoc fixes to the tree-sitter-bash lexer, which is unsurprising if you look at the structure of the code (manually crawling through backslashes and braces in C).

https://github.com/tree-sitter/tree-sitter-bash/blob/master/...

These fixes are definitely appreciated, but I think it indicates a problem with the model itself.

(based on https://lobste.rs/s/endspx/software_you_are_thankful_for#c_y...)

[1] https://www.oilshell.org/blog/2018/04/26.html

A few more truly in the vibe of open source projects not advertising their hosting providers: https://plane.so/ , https://element.io/ , https://www.loomio.com/ , https://zulip.com/ , and it keeps going... Very few open source projects, in the FOSS sense, are advertising their hosting provider.

I was so excited to see this happen!

I'm not a customer of yours, but your blog posts inspired me a lot. Your journey through quitting caffeine is a great and heartening read.

I've got two things to say;

1) Will you consider source-availabling the web portal (app.keygen.sh) too? Some enterprises could use it for easy management/support for custoner's licenses. Although now that I think about it, it could also discourage custom, more suitable implementations for each use-case... I'm torn on this one. I would like to see it available on GitHub too just out of curiosity too. It's very beautiful.

2) For a team + customers' chat, I cannot recommend Zulip enough. It's a joy to use and has the most innovative chat system I've ever seen. https://zulip.com

I hope your business keeps prospering!

Zulip | Senior Flutter Engineer | REMOTE or San Francisco | Full-time | https://zulip.com/

At Zulip, we’re out to build the world’s best collaboration platform, and we’re committed to keeping it 100% open source. Zulip is the only modern team chat app that is designed for both live and asynchronous conversations. Our product serves as the communication hub for businesses, open-source projects, educators and communities around the world.

We're building the next generation of Zulip's mobile apps in Flutter. We're looking for a senior engineer with Flutter experience to join our small core team and help define the future of team chat. Our Flutter prototype is just a few months old, so this is a greenfield opportunity to help shape the app's architecture from early on.

For full details, check out https://zulip.com/jobs/. Apply at [email protected].

Anyways, I'm an internet stranger, not a social media expert. So let me know what you all think. And if we make a discord or zulip or something to make this a reality, let me know and I'd love to help any way I can.