Alphii
Centipat
- Katılım
- 3 Ağustos 2022
- Mesajlar
- 12
Daha fazla
- Cinsiyet
- Erkek
import hashlib
import random
import string
import json
import binascii
import numpy as np
import pandas as pd
import pylab as pl
import logging
import datetime
import collections
import Crypto
import Crypto.Random
from Crypto.Hash import SHA
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
class Client:
def __init__(self):
random_generator = Crypto.Random.new().read
self._private_key = RSA.generate(1024, random_generator)
self._public_key = self._private_key.publickey()
self._signer = PKCS1_v1_5.new(self._private_key)
@property
def identity(self):
return binascii.hexlify(self._public_key.exportKey(format='DER')).decode('ascii')
class Transaction:
def __init__(self, sender, recipient, value):
self.sender = sender
self.recipient = recipient
self.value = value
self.time = datetime.datetime.now()
def to_dict(self):
if self.sender == "Genesis":
identity = "Genesis"
else:
identity = self.sender.identity
return collections.OrderedDict({
'sender': identity,
'recipient': self.recipient,
'value': self.value,
'time': self.time})
def sign_transaction(self):
private_key = self.sender._private_key
signer = PKCS1_v1_5.new(private_key)
h = SHA.new(str(self.to_dict()).encode('utf8'))
return binascii.hexlify(signer.sign(h)).decode('ascii')
Dinesh = Client()
Ramesh = Client()
t = Transaction(Dinesh, Ramesh.identity, 5.0)
signature = t.sign_transaction()
print(signature)
def display_transaction(transaction):
#for transaction in transactions:
dict = transaction.to_dict()
print ("sender: " + dict['sender'])
print ('-----')
print ("recipient: " + dict['recipient'])
print ('-----')
print ("value: " + str(dict['value']))
print ('-----')
print ("time: " + str(dict['time']))
print ('-----')
transactions = []
for transaction in transactions:
display_transaction (transaction)
print ('--------------')
class Block:
def __init__(self):
self.verified_transactions = []
self.previous_block_hash = ""
self.Nonce = ""
last_block_hash = ""
t0 = Transaction (
"Genesis",
Dinesh.identity,
500.0
)
block0 = Block()
block0.previous_block_hash = None
Nonce = None
block0.verified_transactions.append (t0)
digest = hash (block0)
last_block_hash = digest
TPCoins = []
def dump_blockchain (self):
print ("Number of blocks in the chain: " + str(len (self)))
for x in range (len(TPCoins)):
block_temp = TPCoins[x]
print ("block # " + str(x))
for transaction in block_temp.verified_transactions:
display_transaction (transaction)
print ('--------------')
print ('=====================================')
TPCoins.append (block0)
dump_blockchain(TPCoins)
def sha256(message):
return hashlib.sha256(message.encode('ascii')).hexdigest()
def mine(message, difficulty=1):
assert difficulty >= 1
prefix = '1' * difficulty
for i in range(1000):
digest = sha256(str(hash(message)) + str(i))
if digest.startswith(prefix):
print ("after " + str(i) + " iterations found nonce: "+ digest)
return digest
mine ("test message", 2)
last_transaction_index = 0
block = Block()
for i in range(3):
temp_transaction = transactions[last_transaction_index]
# validate transaction
# if valid
block.verified_transactions.append (temp_transaction)
last_transaction_index += 1
block.previous_block_hash = last_block_hash
block.Nonce = mine (block, 2)
digest = hash (block)
TPCoins.append (block)
last_block_hash = digest
# Miner 2 adds a block
block = Block()
for i in range(3):
temp_transaction = transactions[last_transaction_index]
# validate transaction
# if valid
block.verified_transactions.append (temp_transaction)
last_transaction_index += 1
block.previous_block_hash = last_block_hash.Nonce = mine (block, 2)
digest = hash (block)
TPCoins.append (block)
last_block_hash = digest
# Miner 3 adds a block
block = Block()
for i in range(3):
temp_transaction = transactions[last_transaction_index]
#display_transaction (temp_transaction)
# validate transaction
# if valid
block.verified_transactions.append (temp_transaction)
last_transaction_index += 1
block.previous_block_hash = last_block_hash
block.Nonce = mine (block, 2)
digest = hash (block)
TPCoins.append (block)
last_block_hash = digest
dump_blockchain(TPCoins)
Aldığım hatayı görsel olarak yükledim. Nasıl çözebilirim?
import random
import string
import json
import binascii
import numpy as np
import pandas as pd
import pylab as pl
import logging
import datetime
import collections
import Crypto
import Crypto.Random
from Crypto.Hash import SHA
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
class Client:
def __init__(self):
random_generator = Crypto.Random.new().read
self._private_key = RSA.generate(1024, random_generator)
self._public_key = self._private_key.publickey()
self._signer = PKCS1_v1_5.new(self._private_key)
@property
def identity(self):
return binascii.hexlify(self._public_key.exportKey(format='DER')).decode('ascii')
class Transaction:
def __init__(self, sender, recipient, value):
self.sender = sender
self.recipient = recipient
self.value = value
self.time = datetime.datetime.now()
def to_dict(self):
if self.sender == "Genesis":
identity = "Genesis"
else:
identity = self.sender.identity
return collections.OrderedDict({
'sender': identity,
'recipient': self.recipient,
'value': self.value,
'time': self.time})
def sign_transaction(self):
private_key = self.sender._private_key
signer = PKCS1_v1_5.new(private_key)
h = SHA.new(str(self.to_dict()).encode('utf8'))
return binascii.hexlify(signer.sign(h)).decode('ascii')
Dinesh = Client()
Ramesh = Client()
t = Transaction(Dinesh, Ramesh.identity, 5.0)
signature = t.sign_transaction()
print(signature)
def display_transaction(transaction):
#for transaction in transactions:
dict = transaction.to_dict()
print ("sender: " + dict['sender'])
print ('-----')
print ("recipient: " + dict['recipient'])
print ('-----')
print ("value: " + str(dict['value']))
print ('-----')
print ("time: " + str(dict['time']))
print ('-----')
transactions = []
for transaction in transactions:
display_transaction (transaction)
print ('--------------')
class Block:
def __init__(self):
self.verified_transactions = []
self.previous_block_hash = ""
self.Nonce = ""
last_block_hash = ""
t0 = Transaction (
"Genesis",
Dinesh.identity,
500.0
)
block0 = Block()
block0.previous_block_hash = None
Nonce = None
block0.verified_transactions.append (t0)
digest = hash (block0)
last_block_hash = digest
TPCoins = []
def dump_blockchain (self):
print ("Number of blocks in the chain: " + str(len (self)))
for x in range (len(TPCoins)):
block_temp = TPCoins[x]
print ("block # " + str(x))
for transaction in block_temp.verified_transactions:
display_transaction (transaction)
print ('--------------')
print ('=====================================')
TPCoins.append (block0)
dump_blockchain(TPCoins)
def sha256(message):
return hashlib.sha256(message.encode('ascii')).hexdigest()
def mine(message, difficulty=1):
assert difficulty >= 1
prefix = '1' * difficulty
for i in range(1000):
digest = sha256(str(hash(message)) + str(i))
if digest.startswith(prefix):
print ("after " + str(i) + " iterations found nonce: "+ digest)
return digest
mine ("test message", 2)
last_transaction_index = 0
block = Block()
for i in range(3):
temp_transaction = transactions[last_transaction_index]
# validate transaction
# if valid
block.verified_transactions.append (temp_transaction)
last_transaction_index += 1
block.previous_block_hash = last_block_hash
block.Nonce = mine (block, 2)
digest = hash (block)
TPCoins.append (block)
last_block_hash = digest
# Miner 2 adds a block
block = Block()
for i in range(3):
temp_transaction = transactions[last_transaction_index]
# validate transaction
# if valid
block.verified_transactions.append (temp_transaction)
last_transaction_index += 1
block.previous_block_hash = last_block_hash.Nonce = mine (block, 2)
digest = hash (block)
TPCoins.append (block)
last_block_hash = digest
# Miner 3 adds a block
block = Block()
for i in range(3):
temp_transaction = transactions[last_transaction_index]
#display_transaction (temp_transaction)
# validate transaction
# if valid
block.verified_transactions.append (temp_transaction)
last_transaction_index += 1
block.previous_block_hash = last_block_hash
block.Nonce = mine (block, 2)
digest = hash (block)
TPCoins.append (block)
last_block_hash = digest
dump_blockchain(TPCoins)
Aldığım hatayı görsel olarak yükledim. Nasıl çözebilirim?
