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Code Issues Releases Wiki Activity

core/cardano: reuse derived Shamir seed (fixes #1007)

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This commit is contained in:
Tomas Susanka 2020-08-28 13:29:17 +02:00
parent 09667a676e
commit 19461398d7
1 changed files with 3 additions and 2 deletions
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5
core/src/apps/cardano/seed.py
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@ -4,6 +4,7 @@ from trezor.crypto import bip32
from apps.common import mnemonic
from apps.common.passphrase import get as get_passphrase
from apps.common.seed import get_seed
from .helpers import seed_namespaces
@ -68,13 +69,13 @@ async def get_keychain(ctx: wire.Context) -> Keychain:
if not device.is_initialized():
raise wire.NotInitialized("Device is not initialized")
passphrase = await get_passphrase(ctx)
if mnemonic.is_bip39():
passphrase = await get_passphrase(ctx)
# derive the root node from mnemonic and passphrase via Cardano Icarus algorithm
root = bip32.from_mnemonic_cardano(mnemonic.get_secret().decode(), passphrase)
else:
# derive the root node via SLIP-0023
seed = mnemonic.get_seed(passphrase)
seed = await get_seed(ctx)
root = bip32.from_seed(seed, "ed25519 cardano seed")
keychain = Keychain(root)