Changes many fields to required -- as far as we were able to figure out,
signing would fail if these fields aren't provided anyway, so this
should not pose a compatibility problem.
Co-authored-by: matejcik <ja@matejcik.cz>
Layouts can be used by the application code to interact with user using
small number of dialogs or other groups of UI components. Each layout is
identified by name and takes some parameters. Most layouts will have an
implementation for each hardware model, mechanism is provided to import
the correct version so that application code can be oblivious to the
model.
This commit introduces the layout concept and converts a couple of
dialogs to use it.
They now live under trezor.ui.components.tt. Later
trezor.ui.components.t1 will be added and application code will be
rewritten to not use them directly in order to work on both TT and T1.
also make a cleaner distinction between keychain, seed, path
This enables using `unsafe_prompts`, because with the original code, if
there was no namespace match, we wouldn't know which curve to use.
For ease of implementation, we use a LRU cache for derived keys,
instead of the original design "one cache entry per namespace".
SLIP21 is now treated completely separately, via `slip21_namespaces` and
`derive_slip21` method.
If more slip21-like things come in the future, we can instead hang them
on the keychain: put a per-curve Keychain object accessible by
`keychain[curve_name].derive()`, and the majority usecase will just pass
around `keychain[curve_name]` instead of having to specify the curve in
every `derive()` call.
Or alternately we'll just specify the curve in every `derive()` call,
whichever seems more appropriate.
