merkle-tree-stream 0.0.1a3

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. However, there is currently no stream implemented, only a generator is available. This is because the reference implementation of Hypercore 7 makes use of the generator only. A stream implementation may follow.

from hashlib import sha256
from merkle_tree_stream import MerkleTreeGenerator

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 = MerkleTreeGenerator(leaf=leaf, parent=parent)
merkle.write('hello')
merkle.write('hashed')
merkle.write('world')