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Using end-to-end encryption for voice and messages

To successfully make encrypted calls or send encrypted messages, you need both an encryption key and a decryption key. You can also share the keys with other users from the user list or from the map. Alternatively, agree on the keys with the other user in advance.

Establishing a secure connection

Important:
  • The E2EE feature must be enabled for both participating users by the administrator in T.Commander.
  • For security reasons, all recorded E2EE calls can be played back from the history only if the appropriate keys are provided.
  • Emergency calls and remote listening audio are never E2E encrypted.

Make sure you use the same pair of keys on both ends. Take the following steps:

  1. Confirm that Enable PTT Encryption is enabled for the T.Flex user on the other end.
  2. Come up with a key. Any string can be used as the key. Save it as your encryption key on the E2EE page in the configuration settings.
  3. In the user list, right-click the user you need and select Share key. The user will be prompted to accept the decryption key.
  4. Tell the user to share their key with you through the actions menu in the user list on their device. You should get a confirmation prompt; answer Yes to save the received key as your decryption key.

If there is a padlock icon on the PTT button, this indicates that an encryption key is set. This icon has two states:

  • Closed – encryption is active
  • Open – encryption is inactive

To toggle the use of encryption on or off, click and hold the padlock icon for a moment.

To turn off encryption completely, open the settings, go to the E2EE page, clear the Encryption Key and Decryption Key fields and click Save.