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Merge pull request #494 from trezor/tsusanka/cardano-sign-verify

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Cardano: remove sign/verify functions
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Tomas Susanka 2019-03-11 16:43:16 +01:00 committed by GitHub
commit d86abc473f
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 0 additions and 94 deletions
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53
src/apps/cardano/sign_message.py
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@ -1,53 +0,0 @@
from trezor import log, ui, wire
from trezor.crypto import bip32
from trezor.crypto.curve import ed25519
from trezor.messages.CardanoMessageSignature import CardanoMessageSignature
from .address import derive_address_and_node, validate_full_path
from .layout import confirm_with_pagination
from apps.common import paths, seed, storage
async def sign_message(ctx, msg):
await paths.validate_path(ctx, validate_full_path, path=msg.address_n)
mnemonic = storage.get_mnemonic()
root_node = bip32.from_mnemonic_cardano(mnemonic)
try:
signature = _sign_message(root_node, msg.message, msg.address_n)
except ValueError as e:
if __debug__:
log.exception(__name__, e)
raise wire.ProcessError("Signing failed")
mnemonic = None
root_node = None
if not await confirm_with_pagination(
ctx, msg.message, "Signing message", ui.ICON_RECEIVE, ui.GREEN
):
raise wire.ActionCancelled("Signing cancelled")
if not await confirm_with_pagination(
ctx,
paths.break_address_n_to_lines(msg.address_n),
"With address",
ui.ICON_RECEIVE,
ui.GREEN,
):
raise wire.ActionCancelled("Signing cancelled")
return signature
def _sign_message(root_node, message: str, derivation_path: list):
address, node = derive_address_and_node(root_node, derivation_path)
signature = ed25519.sign_ext(node.private_key(), node.private_key_ext(), message)
sig = CardanoMessageSignature()
sig.public_key = seed.remove_ed25519_prefix(node.public_key())
sig.signature = signature
return sig

41
src/apps/cardano/verify_message.py
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@ -1,41 +0,0 @@
from ubinascii import hexlify
from trezor import log, ui, wire
from trezor.crypto.curve import ed25519
from trezor.messages.Failure import Failure
from trezor.messages.Success import Success
from .address import validate_full_path
from .layout import confirm_with_pagination
from apps.common import paths
async def verify_message(ctx, msg):
await paths.validate_path(ctx, validate_full_path, path=msg.address_n)
try:
res = _verify_message(msg.public_key, msg.signature, msg.message)
except ValueError as e:
if __debug__:
log.exception(__name__, e)
raise wire.ProcessError("Verifying failed")
if not res:
return Failure(message="Invalid signature")
if not await confirm_with_pagination(
ctx, msg.message, "Verifying message", ui.ICON_RECEIVE, ui.GREEN
):
raise wire.ActionCancelled("Verifying cancelled")
if not await confirm_with_pagination(
ctx, hexlify(msg.public_key), "With public key", ui.ICON_RECEIVE, ui.GREEN
):
raise wire.ActionCancelled("Verifying cancelled")
return Success(message="Message verified")
def _verify_message(public_key: bytes, signature: bytes, message: str):
return ed25519.verify(public_key, signature, message)