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Document config for preferring Secure Backup setup methods

Part of https://github.com/vector-im/element-web/issues/15238
pull/15251/head
J. Ryan Stinnett 2 years ago
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  1. 21
      docs/e2ee.md

21
docs/e2ee.md

@ -35,6 +35,27 @@ following on your homeserver's `/.well-known/matrix/client` config:
}
```
## Preferring setup methods
By default, Element offers users a choice of a random key or user-chosen
passphrase when setting up Secure Backup. If a homeserver admin would like to
only offer one of these, you can signal this via the
`/.well-known/matrix/client` config, for example:
```json
{
"io.element.e2ee": {
"secure_backup_setup_methods": ["passphrase"]
}
}
```
The field `secure_backup_setup_methods` is an array listing the methods the
client should display. Supported values currently include `key` and
`passphrase`. If the `secure_backup_setup_methods` field is not present or
exists but does not contain any supported methods, Element will fallback to the
default value of: `["key", "passphrase"]`.
# Compatibility
The settings above were first proposed under a `im.vector.riot.e2ee` key, which

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