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Add Signal Configuration and Molly Knowledge Base article (#1494)

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Signed-off-by: Daniel Gray <dng@disroot.org>
Signed-off-by: lexi <git@27lx.me>
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2022-07-07 13:08:35 +00:00
committed by Daniel Gray
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commit 3111447b96
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docs/real-time-communication.en.md
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**Signal** is a mobile app developed by Signal Messenger LLC. The app provides instant messaging, as well as voice and video calling.
All communications are E2EE. Contact lists are encrypted using your login PIN and the server does not have access to them. Personal profiles are also encrypted and only shared with contacts who add you.
All communications are E2EE. Contact lists are encrypted using your Signal PIN and the server does not have access to them. Personal profiles are also encrypted and only shared with contacts you chat with.
[:octicons-home-16: Homepage](https://signal.org/){ .md-button .md-button--primary }
[:octicons-eye-16:](https://signal.org/legal/#privacy-policy){ .card-link title="Privacy Policy" }
@@ -28,14 +28,24 @@ icon: material/chat-processing
- [:fontawesome-brands-google-play: Google Play](https://play.google.com/store/apps/details?id=org.thoughtcrime.securesms)
- [:fontawesome-brands-app-store-ios: App Store](https://apps.apple.com/app/id874139669)
Signal has minimal metadata when [Sealed Sender](https://signal.org/blog/sealed-sender/) is enabled. The sender address is encrypted along with the message body, and only the recipient address is visible to the server.
Signal requires your phone number as a personal identifier.
[Sealed Sender](https://signal.org/blog/sealed-sender/) is only enabled for people in your contacts list, but can be enabled for all recipients with the increased risk of receiving spam.
Signal supports [private groups](https://signal.org/blog/signal-private-group-system/). The server has no record of your group memberships, group titles, group avatars, or group attributes. Signal has minimal metadata when [Sealed Sender](https://signal.org/blog/sealed-sender/) is enabled. The sender address is encrypted along with the message body, and only the recipient address is visible to the server. Sealed Sender is only enabled for people in your contacts list, but can be enabled for all recipients with the increased risk of receiving spam. Signal requires your phone number as a personal identifier.
The protocol was independently [audited](https://eprint.iacr.org/2016/1013.pdf) in 2016. The specification for the Signal protocol can be found in their [documentation](https://signal.org/docs/).
We also suggest Molly as an alternative to the official Signal app.
![Molly logo](/assets/img/messengers/molly.svg){ align=right }
**Molly** is a Signal fork for Android that provides additional hardening and security features to Signal.
[:octicons-home-16: Homepage](https://molly.im/){ .md-button }
[:octicons-eye-16:](https://signal.org/legal/#privacy-policy){ .card-link title="Privacy Policy" }
[:octicons-info-16:](https://github.com/mollyim/mollyim-android#readme){ .card-link title=Documentation}
[:octicons-code-16:](https://github.com/mollyim/mollyim-android){ .card-link title="Source Code" }
[:octicons-heart-16:](https://opencollective.com/mollyim){ .card-link title=Contribute }
[Signal Configuration and Hardening :hero-arrow-circle-right-fill:](./advanced/signal-configuration-hardening.md)
### Element
!!! recommendation