Installing ProtonMail Bridge for Linux using a DEB file

This article explains how to verify and install the DEB package on your Linux device. 

  • To verify the package, install:

sudo apt-get install debsig-verify debian-keyring

  • Import the public key into keyring by following these instructions:

gpg --dearmor --output debsig.gpg bridge_pubkey.gpg

sudo mkdir -p /usr/share/debsig/keyrings/E2C75D68E6234B07

sudo mv debsig.gpg /usr/share/debsig/keyrings/E2C75D68E6234B07

 If you are using **Ubuntu 16.04** or derivatives, use the file `bridge_16.04.pol`

  •  Install the policy file:

sudo mkdir -p /etc/debsig/policies/E2C75D68E6234B07

sudo cp bridge.pol /etc/debsig/policies/E2C75D68E6234B07

  • Check `deb` file by running: 

debsig-verify protonmail-bridge_1.2.6-1_amd64.deb

If the check passes, you should see this: 

debsig: Verified package from 'Proton Technologies AG (ProtonMail Bridge developers) <bridge@protonmail.ch>' (Proton Technologies AG)

  • Install the package using your package manager:

sudo apt-get install ./protonmail-bridge_1.2.6-1_amd64.deb

Please make sure that file names in the commands match the downloaded Bridge version. If the latest version is displayed as v1.2.6, you need to enter it as 1.2.6.-1