This code aims to build a Merkle tree from a list of values. All data are hashed using the cryptographic hash algorithm SHA-3 (Secure Hash Algorithm 3).
It is recommended to hash the values provided to the MerkleTree class.
- Create a merkle tree
- Create a merkle proof
- Verify a value with a merkle proof
- Get the merkle tree root
- Get the merkle tree
size - Get the merkle tree
depth - Get/count the
leaves
git clone https://github.com/ArnaudSene/python-merkle-tree.git
cd python-merkle-treeThis code use poetry to manage dependencies
python -m venv .venv
source .venv/bin/activate
python -m pip install --upgrade pip
pip install poetry==1.4.0
poetry install Start a Python interactive shell or session
$ pythonPython 3.11.2 (v3.11.2:878ead1ac1, Feb 7 2023, 10:02:41) [Clang 13.0.0 (clang-1300.0.29.30)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>data = [
'43a26051362b8040b289abe93334a5e3662751aa691185ae9e9a2e1e0c169350',
'f2ff61e5ca30a7708bfa760e5749e10dc81452d9006f8fb35db69d8f490ed637',
'487dced11563793b12e4357f218d5a521c730fff52fc03552442bfac917691c0',
'0e3c7b0c7fed34610a5da469ea9e44e2965a3f6ae0ae2d5d1ba5e9f5ac9d345b',
'1938b5f01496fa8768bc8d5a808d6cd1a3005742a9c7c12e4a17cf9f070ee2d8'
]
from src.apps.merkle import MerkleTree
mt = MerkleTree()
mt.build_merkle_tree(data)mt.get_root_tree()
'd84f7a7126b5b0ec9872893bb4c92741ee70c44d29043f2b0ff830116b9ee731'mt.get_merkle_tree()
[
'43a26051362b8040b289abe93334a5e3662751aa691185ae9e9a2e1e0c169350',
'f2ff61e5ca30a7708bfa760e5749e10dc81452d9006f8fb35db69d8f490ed637',
'487dced11563793b12e4357f218d5a521c730fff52fc03552442bfac917691c0',
'0e3c7b0c7fed34610a5da469ea9e44e2965a3f6ae0ae2d5d1ba5e9f5ac9d345b',
'1938b5f01496fa8768bc8d5a808d6cd1a3005742a9c7c12e4a17cf9f070ee2d8',
'a1d17c81372869975854fe89a2f994a91caf5b337eeba198e40802ae047c373c',
'd5863df95241788aade3430587471066c6f23a6ed59aff3ee7559928acb518b1',
'd8f77eeaa7ae0f115390de80bb70082bbec539ab7b8e633ac149abd02ebc62a5',
'd84f7a7126b5b0ec9872893bb4c92741ee70c44d29043f2b0ff830116b9ee731'
]mt.get_merkle_proof('43a26051362b8040b289abe93334a5e3662751aa691185ae9e9a2e1e0c169350')
[
'f2ff61e5ca30a7708bfa760e5749e10dc81452d9006f8fb35db69d8f490ed637',
'd5863df95241788aade3430587471066c6f23a6ed59aff3ee7559928acb518b1',
'1938b5f01496fa8768bc8d5a808d6cd1a3005742a9c7c12e4a17cf9f070ee2d8'
]leaf = '43a26051362b8040b289abe93334a5e3662751aa691185ae9e9a2e1e0c169350'
proofs = [
'f2ff61e5ca30a7708bfa760e5749e10dc81452d9006f8fb35db69d8f490ed637',
'd5863df95241788aade3430587471066c6f23a6ed59aff3ee7559928acb518b1',
'1938b5f01496fa8768bc8d5a808d6cd1a3005742a9c7c12e4a17cf9f070ee2d8'
]
root_tree = 'd84f7a7126b5b0ec9872893bb4c92741ee70c44d29043f2b0ff830116b9ee731'
assert mt.verify(proofs, root_tree, leaf) == True# Count leaves
mt.count_leaves()
5
# Get leaves
mt.get_leaves()
[
'43a26051362b8040b289abe93334a5e3662751aa691185ae9e9a2e1e0c169350',
'f2ff61e5ca30a7708bfa760e5749e10dc81452d9006f8fb35db69d8f490ed637',
'487dced11563793b12e4357f218d5a521c730fff52fc03552442bfac917691c0',
'0e3c7b0c7fed34610a5da469ea9e44e2965a3f6ae0ae2d5d1ba5e9f5ac9d345b',
'1938b5f01496fa8768bc8d5a808d6cd1a3005742a9c7c12e4a17cf9f070ee2d8'
]
# Get depth of the Merkle tree
mt.get_depth()
4
# Get size of the Merkle tree
mt.get_size()
9
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