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Code Issues Releases Wiki Activity

seed: simplify Keychain.validate_path

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This commit is contained in:
Jan Pochyla 2019-04-04 11:41:23 +02:00
parent 7cadefcdd0
commit d1a01bebc5
1 changed files with 4 additions and 14 deletions
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18
src/apps/common/seed.py
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@ -26,20 +26,10 @@ class Keychain:
del self.seed
def validate_path(self, checked_path: list):
empty = True
for _, *namespace_path in self.namespaces:
if empty and len(namespace_path):
empty = False
for i, p in enumerate(namespace_path):
if p != checked_path[i]:
# item did not match, move on to the next allowed path in namespace
break
if i == len(namespace_path) - 1:
# all items match in some namespace path -> success
return
if not empty:
# checked_path was not among the allowed ones
raise wire.DataError("Forbidden key path")
for curve, *path in self.namespaces:
if path == checked_path[: len(path)]: # TODO: check curve_name
return
raise wire.DataError("Forbidden key path")
def derive(self, node_path: list, curve_name: str = "secp256k1") -> bip32.HDNode:
# find the root node index