services:matrix:encryption
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services:matrix:encryption [2020/12/04 15:58] – Reorder sections behrmj87 | services:matrix:encryption [2021/08/10 14:39] – [The somewhat short story] behrmj87 | ||
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===== End-to-End-encryption for Matrix on Element===== | ===== End-to-End-encryption for Matrix on Element===== | ||
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- | <note important> | ||
End-to-end encryption means that only the parties participating in a conversation are able to decrypt and read the messages that were send. Our server is not able to decrypt the messages that were sent, preventing third parties to read the messages. | End-to-end encryption means that only the parties participating in a conversation are able to decrypt and read the messages that were send. Our server is not able to decrypt the messages that were sent, preventing third parties to read the messages. | ||
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<note warning> | <note warning> | ||
- | ==== Upgrading encryption ==== | ||
- | This step is necessary if you have used encryption | + | ==== The somewhat short story ==== |
+ | |||
+ | Some chats you encounter will be encrypted. Direct conversations are encrypted by default and encryption | ||
+ | |||
+ | * Have one running session (in a browser on your computer, on your phone, wherever), so that new sessions can authenticate against | ||
+ | * have access to your recovery passphrase (that you should create when you first log in) to recover your encryption keys when you log into a new session and have no other running sessions to authenticate against. | ||
- | If you have used encryption before you will notice a small popup on the left side of the screen, asking you to upgrade. Click on the " | + | This means, that if you do have encrypted messages, e.g. in a direct |
- | This concludes the upgrade. You can now on read how to verify users in //*Verify a user//, or use encrypted chats without verification. | + | This may sound difficult, but it's not. Read on for what you need to do. |
==== Setting up encryption for the first time ==== | ==== Setting up encryption for the first time ==== | ||
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==== Verifying a session ==== | ==== Verifying a session ==== | ||
- | To access your encryption history and for other users to verify you it is necessary to verify a new session. To verify a session you can either confirm a new session from an existing session or enter your recovery passphrase. | + | To access your messages from encrypted chats, e.g. direct conversations, |
When logging in with a new device you will get prompted to verify it. | When logging in with a new device you will get prompted to verify it. | ||
- | {{ : | + | {{ : |
- | If you are logged into another session | + | The three options: |
+ | - **Use another login**, which will authenticate against a running session, e.g. on a phone or another computer. | ||
+ | - **Use Security Key or Phrase**, which works without another session, i.e. without another device, but you will need the Security Phrase or Key that you set up earlier. | ||
+ | - **Skip**, which skips authentication, | ||
+ | |||
+ | === Verifying a Sessin using a Security Phrase === | ||
+ | |||
+ | This is conceptually the easiest so, we'll discuss it first. Click **Use Security Key or Phrase** and in the screen that opens enter either your *Security Phrase* or your *Security Key*. | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | If you enter either correctly, you will be greeted by this happy screen | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | === Verifying a Sessin using a Security Phrase === | ||
+ | |||
+ | If you are logged into another session, e.g. on your phone, it's easiest to click **Use another login**. There are multiple ways how this is handled, which depends on where the other session is running, e.g. Element on phones | ||
+ | |||
+ | One method that is always available is comparing emoji shown on both devices. First you will be asked on the device with an already authenticated session whether | ||
{{ : | {{ : | ||
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{{ : | {{ : | ||
- | Select to continue and you will be asked for a verification method. Currently the only option is to compare a sting of emojis. | + | Select to continue and you will be asked for a verification method. |
{{ : | {{ : | ||
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{{ : | {{ : | ||
- | Confirm the emojis match on both devices to complete verifying the session. | + | Confirm the emojis match on both devices to complete verifying the session and you get the happy result of a verified |
- | Alternatively you can select to verify a session by using your recovery passphrase: | + | {{ :services: |
- | {{ : | ||
==== Deleting a session ==== | ==== Deleting a session ==== | ||
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{{ : | {{ : | ||
+ | ==== I've lost all my keys! What now? ==== | ||
+ | |||
+ | Sometimes it happens. Your computer and phone die at the same time and those were the only clients you were logged in at and you didn't save your passwordmanager database (hopefully you are using one) where you store your recovery keys or recovery passphrase to any other device. What now? | ||
+ | |||
+ | Well, all your encrypted messages, i.e. messages in rooms or private discussions were encryption was enabled, are gone and you won't get them back, but you can make yourself new recovery keys for the future (and hopefully you will safe them redundantly). To this, just click **Use Security Key or Phrase** | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | on the verification dialog after login and instead of entering your security phrase or key, which you've lost, click the **Reset all** link on the bottom, next to *Forgotten or lost all recovery methods?* | ||
+ | |||
+ | You will then be asked to confirm | ||
+ | |||
+ | {{ : | ||
+ | And clicking **Reset** will sign out of all your old sessions and delete all keys, followed by guiding you through the procedure to generate new ones described above. |
services/matrix/encryption.txt · Last modified: 2021/11/29 16:24 by behrmj87