Iteracion 2

iteracion2.py

# Copyright 2020 Carlos Castro Martos
#
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# furnished to do so, subject to the following conditions:
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#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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from perkle import MerkleTree
from Crypto.Hash import SHA3_256

sha3 = lambda x : SHA3_256.new(x).digest()

t1 = b"transaccion1"
t2 = b"transaccion2"
t3 = b"transaccion3"
t4 = b"transaccion4"

txs = [t1, t2, t3]

for t in txs:
    print("La tx ",t, " tiene el hash ", sha3(t).hex())

m = MerkleTree(txs, sha3)
print("El hash raiz es:", m.root().hex())
print("El árbol de Merkle contiene los nodos:")
for n in m.tree:
    for i in m.tree[n]:
        print(n, i.hex())
      
index, proof_hashes = m.proof(b'transaccion3')
print("¿La transaccion4 con el hash", sha3(t4).hex(), "está en el árbol ?")
print(MerkleTree.verify(b'transaccion4',index,proof_hashes,m.root(),sha3))
print("¿La transaccion3 con el hash", sha3(t3).hex(), "está en el árbol ?")
print(MerkleTree.verify(b'transaccion3',index,proof_hashes,m.root(),sha3))