def __init__(self, blockchain, prev_hash, miner_address):
'''
Class for the current work block.
Functions such as "output_used" search both this AND the passed blockchain object.
'''
self.BLOCKCHAIN = blockchain.blockchain
self.hash = ""
self.block = {} #TODO get from IRC
self.block['nonce'] = ""
self.block['prev'] = prev_hash
self.block['start_time'] = str(int(time()))
self.block['solve_time'] = ""
self.block['transactions'] = {
"0000": { # Temp value
"time":
str(int(time())),
'ins': [],
'outs': [{
"address": miner_address,
"amount": util.padint(REWARD_AMOUNT)
}]
}
}
# Set reward transaction hash
self.block['transactions'][util.gen_tx_hash(
self.block['transactions']
["0000"])] = self.block['transactions']["0000"]
del self.block['transactions']["0000"]
def sign_input(tx,input_i,privkey):
assert len(privkey) == 3
input = tx['ins'][int(input_i)]
msg = tx['time'] + input['tx'] + input['tx_i'] + input['out_i']
_output = tx['outs'][int(input['out_i'])]
msg += _output['address'] + util.padint(_output['amount'])
p = privkey[0]
q = privkey[1]
d = privkey[2]
n = p * q
e = crypto.PUBLIC_EXPONENT
privkey = rsa.PrivateKey(n,e,d,p,q)
return str(hexlify(rsa.sign(unhexlify(msg), privkey, crypto.SIG_HASH_METHOD)))[2:crypto.SIG_HASH_METHOD_LEN+2]
def tx_inputs_signed(self,tx):
for input in tx['ins']:
msg = tx['time'] + input['tx'] + input['tx_i'] + input['out_i']
_output = tx['outs'][int(input['out_i'])]
msg += _output['address'] + util.padint(_output['amount'])
try:
input_trans = self.get_tx_h(input['tx'])
pubkey = input_trans['outs'][int(input['tx_i'])]['address']
except TypeError:
raise NoSuchInputException('Input nonexistant: ' + input['tx'] + "-" + input['tx_i'])
try:
rsa.verify(unhexlify(msg), unhexlify(input['sig']), rsa.PublicKey(int(pubkey,16), crypto.PUBLIC_EXPONENT))
except rsa.pkcs1.VerificationError:
raise SignatureVerificationException("False signature: " + input['sig'])
return True
def sign_input(tx, input_i, privkey):
assert len(privkey) == 3
input = tx['ins'][int(input_i)]
msg = tx['time'] + input['tx'] + input['tx_i'] + input['out_i']
_output = tx['outs'][int(input['out_i'])]
msg += _output['address'] + util.padint(_output['amount'])
p = privkey[0]
q = privkey[1]
d = privkey[2]
n = p * q
e = crypto.PUBLIC_EXPONENT
privkey = rsa.PrivateKey(n, e, d, p, q)
return str(
hexlify(rsa.sign(
unhexlify(msg), privkey,
crypto.SIG_HASH_METHOD)))[2:crypto.SIG_HASH_METHOD_LEN + 2]
def tx_inputs_signed(self, tx):
for input in tx['ins']:
msg = tx['time'] + input['tx'] + input['tx_i'] + input['out_i']
_output = tx['outs'][int(input['out_i'])]
msg += _output['address'] + util.padint(_output['amount'])
try:
input_trans = self.get_tx_h(input['tx'])
pubkey = input_trans['outs'][int(input['tx_i'])]['address']
except TypeError:
raise NoSuchInputException('Input nonexistant: ' +
input['tx'] + "-" + input['tx_i'])
try:
rsa.verify(
unhexlify(msg), unhexlify(input['sig']),
rsa.PublicKey(int(pubkey, 16), crypto.PUBLIC_EXPONENT))
except rsa.pkcs1.VerificationError:
raise SignatureVerificationException("False signature: " +
input['sig'])
return True
def __init__(self,blockchain,prev_hash,miner_address):
'''
Class for the current work block.
Functions such as "output_used" search both this AND the passed blockchain object.
'''
self.BLOCKCHAIN = blockchain.blockchain
self.hash = ""
self.block = {} #TODO get from IRC
self.block['nonce'] = ""
self.block['prev'] = prev_hash
self.block['start_time'] = str(int(time()))
self.block['solve_time'] = ""
self.block['transactions'] = {"0000":{ # Temp value
"time":str(int(time())),
'ins':[],
'outs':[{
"address":miner_address,
"amount":util.padint(REWARD_AMOUNT)
}]
}
}
# Set reward transaction hash
self.block['transactions'][util.gen_tx_hash(self.block['transactions']["0000"])] = self.block['transactions']["0000"]
del self.block['transactions']["0000"]
