merkle-tree-stream 0.0.1a2

A note on naming

For the purposes of uniformity and easy of discovery alongside the reference implementation, we use the same module name as merkle-tree-stream. This may cause confusion since it is not clear what exactly is referred to when using the term “stream” in the context of Python. To be clear, this module provides a Python iterator which appears to match the implementation and meaning of the reference implementation.

from hashlib import sha256
from merkle_tree_stream import MerkleTreeIterator


def leaf(node, roots=None):
    return sha256(node.data).digest()

def parent(first, second):
    sha256 = hashlib.sha256()
    sha256.update(first.data)
    sha256.update(second.data)
    return sha256.digest()

merkle_iter = MerkleTreeIterator(leaf=leaf, parent=parent)
merkle_iter.write('hello')
merkle_iter.write('hashed')
merkle_iter.write('world')