mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-27 01:48:17 +00:00
108 lines
3.1 KiB
Python
108 lines
3.1 KiB
Python
# This file is part of the Trezor project.
|
|
#
|
|
# Copyright (C) 2012-2022 SatoshiLabs and contributors
|
|
#
|
|
# This library is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser General Public License version 3
|
|
# as published by the Free Software Foundation.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the License along with this library.
|
|
# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
|
|
|
|
import typing as t
|
|
|
|
import pytest
|
|
|
|
from trezorlib.merkle_tree import (
|
|
Leaf,
|
|
MerkleTree,
|
|
Node,
|
|
evaluate_proof,
|
|
internal_hash,
|
|
leaf_hash,
|
|
)
|
|
|
|
NODE_VECTORS = ( # node, expected_hash
|
|
( # leaf node
|
|
Leaf(b"hello"),
|
|
"8a2a5c9b768827de5a9552c38a044c66959c68f6d2f21b5260af54d2f87db827",
|
|
),
|
|
( # node with leaf nodes
|
|
Node(left=Leaf(b"hello"), right=Leaf(b"world")),
|
|
"24233339aadcedf287d262413f03c028eb8db397edd32a2878091151b99bf20f",
|
|
),
|
|
( # asymmetric node with leaf hanging on second level
|
|
Node(left=Node(left=Leaf(b"hello"), right=Leaf(b"world")), right=Leaf(b"!")),
|
|
"c3727420dc97c0dbd89678ee195957e44cfa69f5759b395a07bc171b21468633",
|
|
),
|
|
)
|
|
|
|
|
|
MERKLE_TREE_VECTORS = (
|
|
( # one value
|
|
# values
|
|
[b"Merkle"],
|
|
# expected root hash
|
|
leaf_hash(b"Merkle"),
|
|
# expected dict of proof lists
|
|
{
|
|
b"Merkle": [],
|
|
},
|
|
),
|
|
( # two values
|
|
# values
|
|
[b"Haber", b"Stornetta"],
|
|
# expected root hash
|
|
internal_hash(
|
|
leaf_hash(b"Haber"),
|
|
leaf_hash(b"Stornetta"),
|
|
),
|
|
# expected dict of proof lists
|
|
{
|
|
b"Haber": [leaf_hash(b"Stornetta")],
|
|
b"Stornetta": [leaf_hash(b"Haber")],
|
|
},
|
|
),
|
|
( # three values
|
|
# values
|
|
[b"Andersen", b"Wuille", b"Maxwell"],
|
|
# expected root hash
|
|
internal_hash(
|
|
internal_hash(
|
|
leaf_hash(b"Maxwell"),
|
|
leaf_hash(b"Wuille"),
|
|
),
|
|
leaf_hash(b"Andersen"),
|
|
),
|
|
# expected dict of proof lists
|
|
{
|
|
b"Andersen": [internal_hash(leaf_hash(b"Maxwell"), leaf_hash(b"Wuille"))],
|
|
b"Maxwell": [leaf_hash(b"Wuille"), leaf_hash(b"Andersen")],
|
|
b"Wuille": [leaf_hash(b"Maxwell"), leaf_hash(b"Andersen")],
|
|
},
|
|
),
|
|
)
|
|
|
|
|
|
@pytest.mark.parametrize("node, expected_hash", NODE_VECTORS)
|
|
def test_node(node: t.Union[Node, Leaf], expected_hash: str) -> None:
|
|
assert node.tree_hash.hex() == expected_hash
|
|
|
|
|
|
@pytest.mark.parametrize("values, root_hash, proofs", MERKLE_TREE_VECTORS)
|
|
def test_tree(
|
|
values: t.List[bytes],
|
|
root_hash: bytes,
|
|
proofs: t.Dict[bytes, t.List[bytes]],
|
|
) -> None:
|
|
mt = MerkleTree(values)
|
|
assert mt.get_root_hash() == root_hash
|
|
for value, proof in proofs.items():
|
|
assert mt.get_proof(value) == proof
|
|
assert evaluate_proof(value, proof) == root_hash
|