29 lines
1.7 KiB
Markdown
29 lines
1.7 KiB
Markdown
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---
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title: "Delta Chat"
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date: 2023-01-11T17:15:31+03:00
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description: >
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Delta Chat is an encrypted messaging app that uses email as transport.
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---
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Messengers like Telegram, Signal, Whatsapp can't be private due to the peculiarities of architecture - centralization. And peer-to-peer (p2p) services like tox consume too many resources and are inconvenient to use on a mobile device. The best solution is to use **our own** server.
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- **Delta.Chat** - uses your personal email server
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- Matrix - promising development, will be added to SelfPrivacy after stabilization.
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- XMPP/IRC - great candidates, will probably be added to SelfPrivacy later.
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- Rocket.Chat, Zulip, Mattermost - no convenient way to communicate between servers.
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## Typical data leaks when using alien servers
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1. IP once per minute. Helps determine your location: at home, away from home, at work.
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2. The content of your messages.
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3. Meta-information: with whom and when you communicated, even if you use encryption.
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## Features of Delta.Chat
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- Regular email client with all the features of IM.
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- Reliable end-to-end encryption (e2e), provided a personal [email server]({{< ref "email.md" >}}) is used by both interlocutors or a personal key exchange, such as via QR code.
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- Can use any email server, but then you lose control over the meta-information and [risk](https://s.zholnay.name/@kirill/106351532683026396) key-swapping [man-in-the-middle attack](https://en.wikipedia.org/wiki/Man-in-the-middle_attack).
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- Slightly slower than usual messengers
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- First message is not encrypted because public encryption keys are sent with it.
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- There are problems with sending files > 5-7MB.
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- There are no convenient channels. We recommend using [decentralized social network]({{< ref "pleroma.md" >}})
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