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fixing hash function #89

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fixing hash function #89

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11 changes: 5 additions & 6 deletions simpleCoin/miner.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import json
import requests
import base64

from flask import Flask, request
from multiprocessing import Process, Pipe
import ecdsa
Expand All @@ -23,7 +24,7 @@ def __init__(self, index, timestamp, data, previous_hash):
data (str): Data to be sent.
previous_hash(str): String representing previous block unique hash.

Attrib:
Attributes:
index (int): Block number.
timestamp (int): Block creation timestamp.
data (str): Data to be sent.
Expand All @@ -35,14 +36,12 @@ def __init__(self, index, timestamp, data, previous_hash):
self.timestamp = timestamp
self.data = data
self.previous_hash = previous_hash
self.hash = self.hash_block()
self.hash = self.__hash__()

def hash_block(self):
def __hash__(self):
"""Creates the unique hash for the block. It uses sha256."""
sha = hashlib.sha256()
sha.update((str(self.index) + str(self.timestamp) + str(self.data) + str(self.previous_hash)).encode('utf-8'))
return sha.hexdigest()

return hashlib.sha256(json.dumps(self.__dict__, sort_keys=True, indent=4).encode('utf-8')).hexdigest()

def create_genesis_block():
"""To create each block, it needs the hash of the previous one. First
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