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fixes transactions

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This commit is contained in:
Ryan Bakkes 2023-11-08 15:11:41 +01:00
parent 34a78d3e64
commit 711f7b1c63
2 changed files with 34 additions and 31 deletions
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52
goodchain/src/classes/Transaction.py
View File

@ -38,33 +38,33 @@ class Tx:
return True
else:
# total_in = 0
# total_out = 0
# message = self.__gather()
# for addr,amount in self.inputs:
# found = False
# for s in self.sigs:
# if Signature.verify(message, s, addr):
# found = True
# if not found:
# return False
# if amount < 0:
# return False
# total_in = total_in + amount
# for addr in self.reqd:
# found = False
# for s in self.sigs:
# if Signature.verify(message, s, addr):
# found = True
# if not found:
# return False
# for addr,amount in self.outputs:
# if amount < 0:
# return False
# total_out = total_out + amount
total_in = 0
total_out = 0
message = self.__gather()
for addr,amount in self.inputs:
found = False
for s in self.sigs:
if Signature.verify(message, s, addr):
found = True
if not found:
return False
if amount < 0:
return False
total_in = total_in + amount
for addr in self.reqd:
found = False
for s in self.sigs:
if Signature.verify(message, s, addr):
found = True
if not found:
return False
for addr,amount in self.outputs:
if amount < 0:
return False
total_out = total_out + amount
# if total_out > total_in:
# return False
if total_out > total_in:
return False
return True
def __gather(self):

13
goodchain/src/helpers/SignatureHelper.py
View File

@ -3,6 +3,7 @@ from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.asymmetric import padding
from cryptography.hazmat.backends import default_backend
def generateKeys():
private_key = rsa.generate_private_key(public_exponent=65537,key_size=2048)
@ -43,29 +44,31 @@ def bytesToKeys(private_ser, public_ser):
def publicBytesToKey(public_ser):
public_key = serialization.load_pem_public_key(
public_ser
public_ser,
backend=default_backend()
)
return public_key
def privateBytesToKey(private_ser):
private_key = serialization.load_pem_private_key(
private_ser,
password=None
password=None,
backend=default_backend()
)
return private_key
def sign(message, private_key):
message = bytes(str(message), 'utf-8')
key = privateBytesToKey(private_key)
signature = key.sign(
signature = private_key.sign(
message,
padding.PSS(mgf=padding.MGF1(hashes.SHA256()), salt_length=padding.PSS.MAX_LENGTH),
hashes.SHA256()
)
return signature
def verify(message, signature, public_key):
def verify(message, signature, public_ser):
message = bytes(str(message), 'utf-8')
public_key = publicBytesToKey(public_ser)
try:
public_key.verify(
signature,