cardano: add high-level support for passhrase

src/apps/cardano/get_address.py

@@ -5,12 +5,13 @@ from trezor.messages.CardanoAddress import CardanoAddress
 from .address import derive_address_and_node
 from .layout import confirm_with_pagination
 
-from apps.common import storage
+from apps.common import seed, storage
 
 
 async def get_address(ctx, msg):
     mnemonic = storage.get_mnemonic()
-    root_node = bip32.from_mnemonic_cardano(mnemonic, "")
+    passphrase = await seed._get_cached_passphrase(ctx)
+    root_node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
 
     try:
         address, _ = derive_address_and_node(root_node, msg.address_n)

src/apps/cardano/get_public_key.py

@@ -12,7 +12,8 @@ from apps.common import layout, seed, storage
 
 async def get_public_key(ctx, msg):
     mnemonic = storage.get_mnemonic()
-    root_node = bip32.from_mnemonic_cardano(mnemonic, "")
+    passphrase = await seed._get_cached_passphrase(ctx)
+    root_node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
 
     try:
         key = _get_public_key(root_node, msg.address_n)

src/apps/cardano/sign_tx.py

@@ -80,7 +80,8 @@ async def request_transaction(ctx, tx_req: CardanoTxRequest, index: int):
 
 async def sign_tx(ctx, msg):
     mnemonic = storage.get_mnemonic()
-    root_node = bip32.from_mnemonic_cardano(mnemonic, "")
+    passphrase = await seed._get_cached_passphrase(ctx)
+    root_node = bip32.from_mnemonic_cardano(mnemonic, passphrase)
 
     progress.init(msg.transactions_count, "Loading data")