Encrypted messaging with Signal

Signal messenger is an end to end encrypted application also available on Android, iPhone, Windows and Mac. It’s basic functions are encrypted text and video messaging which it does very well and very easily compared to many other applications. Signal is primarily tied to a cell phone number so it will need to be installed on a phone before it can be used on Kubuntu.


To install Signal open Konsole and type,

curl -s https://updates.signal.org/desktop/apt/keys.asc | sudo apt-key add -
echo "deb [arch=amd64] https://updates.signal.org/desktop/apt xenial main" | sudo tee -a /etc/apt/sources.list.d/signal-xenial.list
sudo apt update && sudo apt install signal-desktop

This will install the key for Signal, add the application repository and finally update and install the program.

After installation you can find to by searching in the Applications menu or under Applications/Internet.

Further Information

  • Yesterday, the BBC ran a story with the factually untrue headline, “Cellebrite claimed to have cracked chat app’s encryption.” This is false. Not only can Cellebrite not break Signal encryption, but Cellebrite never even claimed to be able to. Since we weren’t actually given the opportunity to comment in that story, we’re posting this to […]
  • 2020 has seen its fair number of challenges and changes. We’ve all adapted to new ways of staying in touch, getting work done, celebrating birthdays and weddings, and even exercising. As more and more of our critical and personal moments move online, we want to continue to provide you with new ways to share and […]
  • We recently released a new version of Signal groups with group admins, @mentions, permissions, and more. Today we’re adding one more feature into the mix: group links, which let you quickly create a link that anyone can follow to join your group. Like our other new group features, you can create a new group to […]
  • Signal has always benefitted from our engaged and supportive community, and wouldn’t be what it is without your input and feedback. As the number of people using Signal has grown, so have our efforts to keep pace with what people expect from a messaging app, and where we might find new opportunities for Signal. Software […]
  • Now that voice and video calls are available for everyone on Signal Desktop and iPad, in addition to our mobile clients, we want to share a closer look at the technology that makes it possible for incoming calls to ring across multiple devices. Every call placed on Signal has always been private and end-to-end encrypted, […]
  • Whether it’s staying in touch with family and friends, planning a party, scheduling an event, getting work done, or organizing for change, group chats are an increasingly important part of Signal. Today we’re releasing a new version of Signal groups that gives you a richer private group experience with group admins, granular permissions, @mentions and […]
  • Update: This feature is now available in production. The latest beta release of Signal Desktop includes preliminary support for one-to-one voice and video calls. Call your friends and family on macOS, Windows, and Linux; see their smiles on a larger screen; hear their laughter through the big speakers on your desk; and help us test […]
  • The number of people who join Signal every day is still growing at a record pace. With so many new conversations getting started, we’ve heard from a lot of users that they’d like more control over how they begin. With message requests, when someone who isn’t in your contacts starts a new chat with you […]
  • Sometimes people dive into Signal’s code looking for domain names, and then they send us screenshots asking if they should be concerned: We reply with a short explanation that lays out why there’s nothing wrong, but we understand the confusion. Nobody would be excited about getting a grade like this on a homework assignment – […]
  • It’s been about two weeks since we announced an initiative to distribute versatile face coverings to help support everyone who is self-organizing for change in the streets. Since then, we’ve shipped over $25,000 worth of face coverings to organizers throughout the United States. Over $6,000 worth of merchandise was sent to Washington D.C. last week […]

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