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https://github.com/trezor/trezor-firmware.git
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nem: provision namespace signing
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105ba853af
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@ -23,7 +23,14 @@ async def require_confirm_fee(ctx, fee):
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await require_confirm(ctx, content, ButtonRequestType.ConfirmOutput)
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async def require_confirm_action(ctx, payload: bytes, encrypt=False):
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async def require_confirm_final(ctx, action: str):
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content = Text('Confirm sending', ui.ICON_SEND,
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ui.NORMAL, *split_words(action, 18),
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icon_color=ui.GREEN)
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await require_hold_to_confirm(ctx, content, ButtonRequestType.SignTx) # we use SignTx, not ConfirmOutput, for compatibility with T1
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async def require_confirm_payload(ctx, payload: bytes, encrypt=False):
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payload = str(payload, 'utf-8')
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if encrypt:
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content = Text('Send encrypted?', ui.ICON_SEND,
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@ -10,17 +10,46 @@ from trezor.crypto import random
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async def nem_sign_tx(ctx, msg: NEMSignTx):
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validate(msg)
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node = await seed.derive_node(ctx, msg.transaction.address_n, NEM_CURVE)
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payload, encrypted = _get_payload(msg, node)
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public_key = _get_public_key(node)
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tx = bytearray()
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if msg.transfer:
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tx = await _transfer(ctx, node, msg)
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# todo msg.transfer.mosaics = canonicalize_mosaics(msg.transfer.mosaics)
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elif msg.provision_namespace: # todo are those disjunctive?
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tx = await _provision_namespace(ctx, node, msg)
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signature = ed25519.sign(node.private_key(), tx, helpers.NEM_HASH_ALG)
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resp = NEMSignedTx()
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resp.data = tx
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resp.signature = signature
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return resp
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async def _provision_namespace(ctx, node, msg: NEMSignTx) -> bytearray:
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await require_confirm_fee(ctx, msg.transaction.fee)
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await require_confirm_final(ctx, 'Create provision namespace "' + msg.provision_namespace.namespace + '"?')
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return nem_transaction_create_provision_namespace(
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msg.transaction.network,
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msg.transaction.timestamp,
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_get_public_key(node),
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msg.transaction.fee,
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msg.transaction.deadline,
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msg.provision_namespace.namespace,
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msg.provision_namespace.parent,
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msg.provision_namespace.sink,
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msg.provision_namespace.fee)
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async def _transfer(ctx, node, msg: NEMSignTx) -> bytes:
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payload, encrypted = _get_payload(msg, node)
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tx = nem_transaction_create_transfer(
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msg.transaction.network,
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msg.transaction.timestamp,
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public_key,
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_get_public_key(node),
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msg.transaction.fee,
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msg.transaction.deadline,
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msg.transfer.recipient,
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@ -34,17 +63,12 @@ async def nem_sign_tx(ctx, msg: NEMSignTx):
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nem_transaction_write_mosaic(tx, mosaic.namespace, mosaic.mosaic, mosaic.quantity)
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if payload: # confirm unencrypted
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await require_confirm_action(ctx, msg.transfer.payload, encrypted)
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await require_confirm_payload(ctx, msg.transfer.payload, encrypted)
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await require_confirm_fee(ctx, msg.transaction.fee)
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await require_confirm_tx(ctx, msg.transfer.recipient, msg.transfer.amount)
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signature = ed25519.sign(node.private_key(), tx, helpers.NEM_HASH_ALG)
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resp = NEMSignedTx()
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resp.data = tx
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resp.signature = signature
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return resp
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return tx
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def _get_payload(msg: NEMSignTx, node) -> [bytes, bool]:
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@ -16,7 +16,7 @@ def validate(msg: NEMSignTx):
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if msg.transaction is None:
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raise ValueError('No common provided')
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if msg.provision_namespace or msg.mosaic_creation or msg.supply_change or msg.aggregate_modification \
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if msg.mosaic_creation or msg.supply_change or msg.aggregate_modification \
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or msg.importance_transfer:
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raise ValueError('Not yet implemented') # todo
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