feat(core): generate SLIP-21 node for Evolu

Author: obrusvit

common/protob/messages-evolu.proto

@@ -0,0 +1,24 @@
+
+syntax = "proto2";
+package hw.trezor.messages.evolu;
+
+// Sugar for easier handling in Java
+option java_package = "com.satoshilabs.trezor.lib.protobuf";
+option java_outer_classname = "TrezorMessageEvolu";
+
+/**
+ * Request: Ask the device for the SLIP-21 node for Evolu, a local first storage
+ * framework. See https://github.com/evoluhq/evolu
+ * @start
+ * @next EvoluNode
+ */
+message EvoluGetNode {
+}
+
+/**
+ * Response: Evolu SLIP-21 node
+ * @end
+ */
+message EvoluNode {
+    required bytes data = 1;
+}

common/protob/messages.proto

@@ -333,6 +333,10 @@ enum MessageType {
     MessageType_NostrSignEvent = 2003 [(wire_in) = true];
     MessageType_NostrEventSignature = 2004 [(wire_out) = true];
 
+    // Evolu
+    MessageType_EvoluGetNode = 2100 [(wire_in) = true];
+    MessageType_EvoluNode = 2101 [(wire_out) = true];
+
     // Benchmark
     MessageType_BenchmarkListNames = 9100 [(bitcoin_only) = true];
     MessageType_BenchmarkNames = 9101 [(bitcoin_only) = true];

core/.changelog.d/5220.added

@@ -0,0 +1 @@
+Generation of SLIP-21 node for a new way of storing labels (using Evolu).

core/embed/upymod/qstrdefsport.h

@@ -153,6 +153,7 @@ Q(apps.misc)
 Q(apps.misc.cipher_key_value)
 Q(apps.misc.get_ecdh_session_key)
 Q(apps.misc.get_entropy)
+Q(apps.misc.get_evolu_node)
 Q(apps.misc.get_firmware_hash)
 Q(apps.misc.payment_notification)
 Q(apps.misc.sign_identity)
@@ -218,6 +219,7 @@ Q(fido2)
 Q(get_address)
 Q(get_ecdh_session_key)
 Q(get_entropy)
+Q(get_evolu_node)
 Q(get_firmware_hash)
 Q(get_next_u2f_counter)
 Q(get_nonce)

core/src/apps/misc/get_evolu_node.py

@@ -0,0 +1,31 @@
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from trezor.messages import EvoluGetNode, EvoluNode
+
+_EVOLU_KEY_PATH_PREFIX = [b"TREZOR", b"Evolu"]
+
+
+async def get_evolu_node(_msg: EvoluGetNode) -> EvoluNode:
+    from storage.device import is_initialized
+    from trezor.messages import EvoluNode
+    from trezor.ui.layouts import confirm_action
+    from trezor.wire import NotInitialized
+
+    from apps.common.seed import Slip21Node, get_seed
+
+    if not is_initialized():
+        raise NotInitialized("Device is not initialized")
+
+    # TODO: use translated strings when exposing this to production
+    await confirm_action(
+        "get_evolu_keys",
+        "Evolu node",
+        action="Derive SLIP-21 node for Evolu?",
+        prompt_screen=True,
+    )
+    seed = await get_seed()
+    node = Slip21Node(seed)
+    node.derive_path(_EVOLU_KEY_PATH_PREFIX)
+
+    return EvoluNode(data=node.data)

core/src/apps/workflow_handlers.py

@@ -104,6 +104,8 @@ def _find_message_handler_module(msg_type: int) -> str:
         return "apps.misc.cipher_key_value"
     if msg_type == MessageType.GetFirmwareHash:
         return "apps.misc.get_firmware_hash"
+    if msg_type == MessageType.EvoluGetNode:
+        return "apps.misc.get_evolu_node"
 
     if not utils.BITCOIN_ONLY:
         # When promoting the Nostr app to production-level

core/src/trezor/enums/MessageType.py

@@ -15,7 +15,7 @@ SKIPPED_MESSAGES := Cardano DebugMonero Eos Monero Ontology Ripple SdProtect Tez
 	SetBrightness DebugLinkOptigaSetSecMax \
 	BenchmarkListNames BenchmarkRun BenchmarkNames BenchmarkResult \
 	NostrGetPubkey NostrPubkey NostrSignEvent NostrEventSignature \
-	BleUnpair PaymentNotification
+	BleUnpair PaymentNotification EvoluGetNode EvoluNode
 
 ifeq ($(BITCOIN_ONLY), 1)
 SKIPPED_MESSAGES += Ethereum NEM Stellar