feat(trezorctl): Add firmware get-hash command.

python/.changelog.d/2239.added

@@ -0,0 +1 @@
+Add firmware get-hash command.

python/src/trezorlib/cli/firmware.py

@@ -590,3 +590,12 @@ def update(
         click.echo("Dry run. Not uploading firmware to device.")
     else:
         upload_firmware_into_device(client=client, firmware_data=firmware_data)
+
+
+@cli.command()
+@click.argument("hex_challenge", required=False)
+@with_client
+def get_hash(client: "TrezorClient", hex_challenge: Optional[str]) -> str:
+    """Get a hash of the installed firmware combined with the optional challenge."""
+    challenge = bytes.fromhex(hex_challenge) if hex_challenge else None
+    return firmware.get_hash(client, challenge).hex()

python/src/trezorlib/firmware.py

@@ -23,7 +23,7 @@ import construct as c
 import ecdsa
 
 from . import cosi, messages
-from .tools import session
+from .tools import expect, session
 
 if TYPE_CHECKING:
     from .client import TrezorClient
@@ -518,3 +518,8 @@ def update(
         return
     else:
         raise RuntimeError(f"Unexpected message {resp}")
+
+
+@expect(messages.FirmwareHash, field="hash", ret_type=bytes)
+def get_hash(client: "TrezorClient", challenge: Optional[bytes]):
+    return client.call(messages.GetFirmwareHash(challenge=challenge))