core: move public_key_to_wif to helpers

core/src/apps/eos/actions/layout.py

@@ -8,7 +8,6 @@ from trezor.ui.text import Text
 from trezor.utils import chunks
 
 from apps.eos import helpers
-from apps.eos.get_public_key import public_key_to_wif
 from apps.eos.layout import require_confirm
 
 if False:
@@ -273,7 +272,7 @@ def authorization_fields(auth: EosAuthorization) -> List[str]:
     fields.append(str(auth.threshold))
 
     for i, key in enumerate(auth.keys):
-        _key = public_key_to_wif(bytes(key.key))
+        _key = helpers.public_key_to_wif(bytes(key.key))
         _weight = str(key.weight)
 
         header = "Key #{}:".format(i + 1)

core/src/apps/eos/get_public_key.py

@@ -5,7 +5,7 @@ from trezor.messages.EosPublicKey import EosPublicKey
 
 from apps.common import paths
 from apps.eos import CURVE
-from apps.eos.helpers import base58_encode, validate_full_path
+from apps.eos.helpers import public_key_to_wif, validate_full_path
 from apps.eos.layout import require_get_public_key
 
 if False:
@@ -14,17 +14,6 @@ if False:
     from apps.common import seed
 
 
-def public_key_to_wif(pub_key: bytes) -> str:
-    if pub_key[0] == 0x04 and len(pub_key) == 65:
-        head = b"\x03" if pub_key[64] & 0x01 else b"\x02"
-        compressed_pub_key = head + pub_key[1:33]
-    elif pub_key[0] in [0x02, 0x03] and len(pub_key) == 33:
-        compressed_pub_key = pub_key
-    else:
-        raise wire.DataError("invalid public key")
-    return base58_encode("EOS", "", compressed_pub_key)
-
-
 def _get_public_key(node: bip32.HDNode) -> Tuple[str, bytes]:
     seckey = node.private_key()
     public_key = secp256k1.publickey(seckey, True)

core/src/apps/eos/helpers.py

@@ -1,3 +1,4 @@
+from trezor import wire
 from trezor.crypto import base58
 from trezor.messages.EosAsset import EosAsset
 
@@ -61,3 +62,14 @@ def validate_full_path(path: list) -> bool:
     if path[4] != 0:
         return False
     return True
+
+
+def public_key_to_wif(pub_key: bytes) -> str:
+    if pub_key[0] == 0x04 and len(pub_key) == 65:
+        head = b"\x03" if pub_key[64] & 0x01 else b"\x02"
+        compressed_pub_key = head + pub_key[1:33]
+    elif pub_key[0] in [0x02, 0x03] and len(pub_key) == 33:
+        compressed_pub_key = pub_key
+    else:
+        raise wire.DataError("invalid public key")
+    return base58_encode("EOS", "", compressed_pub_key)

core/tests/test_apps.eos.get_public_key.py

@@ -4,8 +4,8 @@ from trezor.crypto import bip32, bip39
 from apps.common.paths import HARDENED
 
 if not utils.BITCOIN_ONLY:
-    from apps.eos.get_public_key import _get_public_key, public_key_to_wif
-    from apps.eos.helpers import validate_full_path
+    from apps.eos.get_public_key import _get_public_key
+    from apps.eos.helpers import validate_full_path, public_key_to_wif
 
 
 @unittest.skipUnless(not utils.BITCOIN_ONLY, "altcoin")