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tezos: supporting only ed25519 curve

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Signed-off-by: Adrian Matejov <adrian.matejov@simplestaking.com>
pull/25/head
Adrian Matejov 6 years ago committed by Tomas Susanka
parent e009c0ca22
commit 203c850779
8 changed files with 48 additions and 138 deletions
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28
src/apps/tezos/__init__.py
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@ -1,26 +1,8 @@
from trezor.messages.MessageType import TezosGetAddress, TezosGetPublicKey, TezosSignTx
from trezor.wire import protobuf_workflow, register
def dispatch_TezosGetAddress(*args, **kwargs):
from .get_address import tezos_get_address
return tezos_get_address(*args, **kwargs)
def dispatch_TezosSignTx(*args, **kwargs):
from .sign_tx import tezos_sign_tx
return tezos_sign_tx(*args, **kwargs)
def dispatch_TezosGetPublicKey(*args, **kwargs):
from .get_public_key import tezos_get_public_key
return tezos_get_public_key(*args, **kwargs)
from trezor import wire
from trezor.messages import MessageType
def boot():
register(TezosGetAddress, protobuf_workflow, dispatch_TezosGetAddress)
register(TezosSignTx, protobuf_workflow, dispatch_TezosSignTx)
register(TezosGetPublicKey, protobuf_workflow, dispatch_TezosGetPublicKey)
wire.add(MessageType.TezosGetAddress, __name__, "get_address")
wire.add(MessageType.TezosSignTx, __name__, "sign_tx")
wire.add(MessageType.TezosGetPublicKey, __name__, "get_public_key")

19
src/apps/tezos/get_address.py
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@ -1,25 +1,20 @@
from trezor.crypto import hashlib
from trezor.crypto.curve import ed25519
from trezor.messages.TezosAddress import TezosAddress
from apps.common import seed
from apps.common.show import show_address, show_qr
from apps.tezos.helpers import (
b58cencode,
get_address_prefix,
get_curve_module,
get_curve_name,
)
from apps.common.layout import show_address, show_qr
from apps.tezos.helpers import TEZOS_CURVE, b58cencode, tezos_get_address_prefix
async def tezos_get_address(ctx, msg):
async def get_address(ctx, msg):
address_n = msg.address_n or ()
curve = msg.curve or 0
node = await seed.derive_node(ctx, address_n, get_curve_name(curve))
node = await seed.derive_node(ctx, address_n, TEZOS_CURVE)
sk = node.private_key()
pk = get_curve_module(curve).publickey(sk)
pk = ed25519.publickey(sk)
pkh = hashlib.blake2b(pk, outlen=20).digest()
address = b58cencode(pkh, prefix=get_address_prefix(curve))
address = b58cencode(pkh, prefix=tezos_get_address_prefix(0))
if msg.show_display:
while True:

17
src/apps/tezos/get_public_key.py
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@ -1,4 +1,5 @@
from trezor import ui
from trezor.crypto.curve import ed25519
from trezor.messages import ButtonRequestType
from trezor.messages.TezosPublicKey import TezosPublicKey
from trezor.ui.text import Text
@ -6,22 +7,16 @@ from trezor.utils import chunks
from apps.common import seed
from apps.common.confirm import require_confirm
from apps.tezos.helpers import (
b58cencode,
get_curve_module,
get_curve_name,
get_pk_prefix,
)
from apps.tezos.helpers import TEZOS_CURVE, TEZOS_PUBLICKEY_PREFIX, b58cencode
async def tezos_get_public_key(ctx, msg):
async def get_public_key(ctx, msg):
address_n = msg.address_n or ()
curve = msg.curve or 0
node = await seed.derive_node(ctx, address_n, get_curve_name(curve))
node = await seed.derive_node(ctx, address_n, TEZOS_CURVE)
sk = node.private_key()
pk = get_curve_module(curve).publickey(sk)
pk_prefixed = b58cencode(pk, prefix=get_pk_prefix(curve))
pk = ed25519.publickey(sk)
pk_prefixed = b58cencode(pk, prefix=TEZOS_PUBLICKEY_PREFIX)
if msg.show_display:
await _show_tezos_pubkey(ctx, pk_prefixed)

72
src/apps/tezos/helpers.py
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@ -2,11 +2,13 @@ from micropython import const
from trezor import wire
from trezor.crypto import base58
from trezor.crypto.curve import ed25519, nist256p1, secp256k1
TEZOS_CURVE = "ed25519"
TEZOS_AMOUNT_DIVISIBILITY = const(6)
PREFIXES = {
TEZOS_ORIGINATED_ADDRESS_PREFIX = "KT1"
TEZOS_PUBLICKEY_PREFIX = "edpk"
TEZOS_SIGNATURE_PREFIX = "edsig"
TEZOS_PREFIX_BYTES = {
# addresses
"tz1": [6, 161, 159],
"tz2": [6, 161, 161],
@ -14,79 +16,29 @@ PREFIXES = {
"KT1": [2, 90, 121],
# public keys
"edpk": [13, 15, 37, 217],
"sppk": [3, 254, 226, 86],
"p2pk": [3, 178, 139, 127],
# signatures
"edsig": [9, 245, 205, 134, 18],
"spsig1": [13, 115, 101, 19, 63],
"p2sig": [54, 240, 44, 52],
# operation hash
"o": [5, 116],
}
TEZOS_CURVES = [
{
"name": "ed25519",
"address_prefix": "tz1",
"pk_prefix": "edpk",
"sig_prefix": "edsig",
"sig_remove_first_byte": False,
"module": ed25519,
},
{
"name": "secp256k1",
"address_prefix": "tz2",
"pk_prefix": "sppk",
"sig_prefix": "spsig1",
"sig_remove_first_byte": True,
"module": secp256k1,
},
{
"name": "nist256p1",
"address_prefix": "tz3",
"pk_prefix": "p2pk",
"sig_prefix": "p2sig",
"sig_remove_first_byte": True,
"module": nist256p1,
},
]
def get_curve_name(index):
if 0 <= index < len(TEZOS_CURVES):
return TEZOS_CURVES[index]["name"]
raise wire.DataError("Invalid type of curve")
def get_curve_module(curve):
return TEZOS_CURVES[curve]["module"]
def get_address_prefix(curve):
return TEZOS_CURVES[curve]["address_prefix"]
def get_pk_prefix(curve):
return TEZOS_CURVES[curve]["pk_prefix"]
def get_sig_prefix(curve):
return TEZOS_CURVES[curve]["sig_prefix"]
def check_sig_remove_first_byte(curve):
return TEZOS_CURVES[curve]["sig_remove_first_byte"]
def tezos_get_address_prefix(tag):
prefixes = ["tz1", "tz2", "tz3"]
if 0 <= tag < len(prefixes):
return prefixes[tag]
raise wire.DataError("Invalid tag in address hash")
def b58cencode(payload, prefix=None):
result = payload
if prefix is not None:
result = bytes(PREFIXES[prefix]) + payload
result = bytes(TEZOS_PREFIX_BYTES[prefix]) + payload
return base58.encode_check(result)
def b58cdecode(enc, prefix=None):
decoded = base58.decode_check(enc)
if prefix is not None:
decoded = decoded[len(PREFIXES[prefix]) :]
decoded = decoded[len(TEZOS_PREFIX_BYTES[prefix]) :]
return decoded

35
src/apps/tezos/sign_tx.py
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@ -2,26 +2,24 @@ import ustruct
from trezor import wire
from trezor.crypto import hashlib
from trezor.crypto.curve import ed25519
from trezor.messages import TezosContractType
from trezor.messages.TezosSignedTx import TezosSignedTx
from apps.common import seed
from apps.tezos.helpers import (
TEZOS_CURVE,
TEZOS_ORIGINATED_ADDRESS_PREFIX,
TEZOS_SIGNATURE_PREFIX,
b58cencode,
check_sig_remove_first_byte,
get_address_prefix,
get_curve_module,
get_curve_name,
get_sig_prefix,
tezos_get_address_prefix,
)
from apps.tezos.layout import *
async def tezos_sign_tx(ctx, msg):
async def sign_tx(ctx, msg):
address_n = msg.address_n or ()
curve = msg.curve or 0
node = await seed.derive_node(ctx, address_n, get_curve_name(curve))
node = await seed.derive_node(ctx, address_n, TEZOS_CURVE)
if msg.transaction is not None:
to = _get_address_from_contract(msg.transaction.destination)
@ -37,9 +35,12 @@ async def tezos_sign_tx(ctx, msg):
elif msg.delegation is not None:
source = _get_address_from_contract(msg.delegation.source)
delegate = _get_address_by_tag(msg.delegation.delegate)
if source != delegate:
delegate = None
if msg.delegation.delegate is not None:
delegate = _get_address_by_tag(msg.delegation.delegate)
if delegate is not None and source != delegate:
await require_confirm_delegation_baker(ctx, delegate)
await require_confirm_set_delegate(ctx, msg.delegation.fee)
# if account registers itself as a delegate
@ -55,17 +56,13 @@ async def tezos_sign_tx(ctx, msg):
wm_opbytes = watermark + opbytes
wm_opbytes_hash = hashlib.blake2b(wm_opbytes, outlen=32).digest()
curve_module = get_curve_module(curve)
signature = curve_module.sign(node.private_key(), wm_opbytes_hash)
if check_sig_remove_first_byte(curve):
signature = signature[1:]
signature = ed25519.sign(node.private_key(), wm_opbytes_hash)
sig_op_contents = opbytes + signature
sig_op_contents_hash = hashlib.blake2b(sig_op_contents, outlen=32).digest()
ophash = b58cencode(sig_op_contents_hash, prefix="o")
sig_prefixed = b58cencode(signature, prefix=get_sig_prefix(curve))
sig_prefixed = b58cencode(signature, prefix=TEZOS_SIGNATURE_PREFIX)
return TezosSignedTx(
signature=sig_prefixed, sig_op_contents=sig_op_contents, operation_hash=ophash
@ -74,7 +71,7 @@ async def tezos_sign_tx(ctx, msg):
def _get_address_by_tag(address_hash):
tag = int(address_hash[0])
return b58cencode(address_hash[1:], prefix=get_address_prefix(tag))
return b58cencode(address_hash[1:], prefix=tezos_get_address_prefix(tag))
def _get_address_from_contract(address):
@ -82,7 +79,7 @@ def _get_address_from_contract(address):
return _get_address_by_tag(address.hash)
elif address.tag == TezosContractType.Originated:
return b58cencode(address.hash[:-1], prefix="KT1")
return b58cencode(address.hash[:-1], prefix=TEZOS_ORIGINATED_ADDRESS_PREFIX)
raise wire.DataError("Invalid contract type")

5
src/trezor/messages/TezosCurveType.py
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@ -1,5 +0,0 @@
# Automatically generated by pb2py
# fmt: off
Ed25519 = 0
Secp256k1 = 1
P256 = 2

5
src/trezor/messages/TezosGetAddress.py
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@ -13,16 +13,13 @@ class TezosGetAddress(p.MessageType):
MESSAGE_WIRE_TYPE = 150
FIELDS = {
1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
2: ('curve', p.UVarintType, 0), # default=Ed25519
3: ('show_display', p.BoolType, 0),
2: ('show_display', p.BoolType, 0),
}
def __init__(
self,
address_n: List[int] = None,
curve: int = None,
show_display: bool = None,
) -> None:
self.address_n = address_n if address_n is not None else []
self.curve = curve
self.show_display = show_display

5
src/trezor/messages/TezosGetPublicKey.py
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@ -13,16 +13,13 @@ class TezosGetPublicKey(p.MessageType):
MESSAGE_WIRE_TYPE = 154
FIELDS = {
1: ('address_n', p.UVarintType, p.FLAG_REPEATED),
2: ('curve', p.UVarintType, 0), # default=Ed25519
3: ('show_display', p.BoolType, 0),
2: ('show_display', p.BoolType, 0),
}
def __init__(
self,
address_n: List[int] = None,
curve: int = None,
show_display: bool = None,
) -> None:
self.address_n = address_n if address_n is not None else []
self.curve = curve
self.show_display = show_display

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