Feature: Add wallet export to Jade via QR

src/cryptoadvance/specter/devices/jade.py

@@ -1,7 +1,9 @@
 from .hwi_device import HWIDevice
 from .hwi.jade import JadeClient
 from .hwi.jade import enumerate as jade_enumerate
-from ..helpers import is_liquid
+from ..helpers import is_liquid, to_ascii20
+from ..util import bcur
+from binascii import b2a_base64
 
 
 class Jade(HWIDevice):
@@ -17,6 +19,8 @@ class Jade(HWIDevice):
  supports_hwi_toggle_passphrase = False
  supports_hwi_multisig_display_address = True
  liquid_support = True
+ exportable_to_wallet = True
+ wallet_export_type = "qr"
 
  @classmethod
  def get_client(cls, *args, **kwargs):
@@ -42,3 +46,41 @@ def create_psbts(self, base64_psbt, wallet):
  qr_psbt = wallet.fill_psbt(base64_psbt, non_witness=False, xpubs=False)
  psbts["qrcode"] = f"{self.supported_qr_code_format}:{qr_psbt}"
  return psbts
+
+ def export_wallet(self, wallet):
+ if not wallet.is_multisig:
+ return None
+ # Jade uses ColdCard's style
+ CC_TYPES = {"legacy": "BIP45", "p2sh-segwit": "P2WSH-P2SH", "bech32": "P2WSH"}
+ # try to find at least one derivation
+ # cc assume the same derivation for all keys :(
+ derivation = None
+ # find correct key
+ for k in wallet.keys:
+ if k in self.keys and k.derivation != "":
+ derivation = k.derivation.replace("h", "'")
+ break
+ if derivation is None:
+ return None
+ qr_string = """
+Name: {}
+Policy: {} of {}
+Derivation: {}
+Format: {}
+Sorted: {}
+""".format(
+ to_ascii20(wallet.name),
+ wallet.sigs_required,
+ len(wallet.keys),
+ derivation,
+ CC_TYPES[wallet.address_type],
+ not wallet.uses_multi,
+ )
+ for k in wallet.keys:
+ # cc assumes fingerprint is known
+ fingerprint = k.fingerprint
+ if fingerprint == "":
+ fingerprint = get_xpub_fingerprint(k.xpub).hex()
+ qr_string += "{}: {}\n".format(fingerprint.upper(), k.xpub)
+ qr_string = b2a_base64(qr_string.encode()).decode()
+ return f"ur-bytes:{qr_string}"