def sign_verify(tx, txs, out,
DB): #check the validity of a transaction of type sign.
a = tools.addr(tx)
B = tx[
'B'] #verify a proof that addr(tx) actually owned that much money long*2-medium ago.
M = custom.all_money
address = tools.addr(tx)
block = tools.db_get(tx['on_block'])
num = max(0, tx['on_block'] - (custom.long_time * 2 - custom.medium_time))
election_block = tools.db_get(num)
if not signature_check(tx):
out[0] += 'signature check'
return False
if 'root_hash' not in election_block:
out[0] += 'no root hash'
return False
v = tools.db_verify(election_block['root_hash'], address, tx['proof'])
if v == False:
tools.log('your address did not exist that long ago.')
return False
if v['amount'] != tx['B']:
tools.log('that is not how much money you had that long ago')
return False
if 'secret_hash' not in tx:
tools.log('need the hash of a secret')
return False
for t in txs:
if tools.addr(t) == address and t['type'] == 'sign':
#tools.log('can only have one sign tx per block')
return False
if len(tx['jackpots']) < 1:
tools.log('insufficient jackpots')
return False
if not signature_check(tx):
out[0] += 'signature check'
return False
length = tools.local_get('length')
if int(tx['on_block']) != int(length + 1):
out[0] += 'this tx is for the wrong block. have ' + str(
length + 1) + ' need: ' + str(tx['on_block'])
return False
if tx['on_block'] > 0:
if not tx['prev'] == tools.db_get(length)['block_hash']:
tools.log('must give hash of previous block')
return False
ran = tools.det_random(tx['on_block'])
for j in tx['jackpots']:
if type(j) != int or j not in range(200):
tools.log('bad jackpot')
return False
if len(filter(lambda x: x == j, tx['jackpots'])) != 1:
tools.log('no repeated jackpots')
return False
if not tools.winner(B, M, ran, address, j):
tools.log('that jackpot is not valid: ' + str(j))
return False
if tx['amount'] < custom.minimum_deposit:
tools.log('you have to deposit more than that')
return False
return True
def sign_verify(tx, txs, out, DB):#check the validity of a transaction of type sign.
a=tools.addr(tx)
B=tx['B']#verify a proof that addr(tx) actually owned that much money long*2-medium ago.
M=custom.all_money
address=tools.addr(tx)
block=tools.db_get(tx['on_block'])
num=max(0,tx['on_block']-(custom.long_time*2-custom.medium_time))
election_block=tools.db_get(num)
if not signature_check(tx):
out[0]+='signature check'
return False
if 'root_hash' not in election_block:
out[0]+='no root hash'
return False
v=tools.db_verify(election_block['root_hash'], address, tx['proof'])
if v==False:
tools.log('your address did not exist that long ago.')
return False
if v['amount']!=tx['B']:
tools.log('that is not how much money you had that long ago')
return False
if 'secret_hash' not in tx:
tools.log('need the hash of a secret')
return False
for t in txs:
if tools.addr(t)==address and t['type']=='sign':
#tools.log('can only have one sign tx per block')
return False
if len(tx['jackpots'])<1:
tools.log('insufficient jackpots')
return False
if not signature_check(tx):
out[0]+='signature check'
return False
length=tools.local_get('length')
if int(tx['on_block'])!=int(length+1):
out[0]+='this tx is for the wrong block. have '+str(length+1) +' need: ' +str(tx['on_block'])
return False
if tx['on_block']>0:
if not tx['prev']==tools.db_get(length)['block_hash']:
tools.log('must give hash of previous block')
return False
ran=tools.det_random(tx['on_block'])
for j in tx['jackpots']:
if type(j)!=int or j not in range(200):
tools.log('bad jackpot')
return False
if len(filter(lambda x: x==j, tx['jackpots']))!=1:
tools.log('no repeated jackpots')
return False
if not tools.winner(B, M, ran, address, j):
tools.log('that jackpot is not valid: '+str(j))
return False
if tx['amount']<custom.minimum_deposit:
tools.log('you have to deposit more than that')
return False
return True
def sign_verify(tx, txs, out, DB): # check the validity of a transaction of type sign.
a = tools.addr(tx)
acc = tools.db_get(a)
if a["amount"] < tx["B"]:
tools.log("you do not have that much money")
B = tx["B"]
M = custom.all_money
address = tools.addr(tx)
block = tools.db_get(tx["on_block"])
num = max(0, tx["on_block"] - (custom.long_time * 2 - custom.medium_time))
election_block = tools.db_get(num)
if "root_hash" not in election_block:
out[0] += "no root hash"
return False
v = tools.db_verify(election_block["root_hash"], address, tx["proof"])
if v == False:
tools.log("your address did not exist that long ago.")
return False
if v["amount"] != tx["B"]:
tools.log("that is not how much money you had that long ago")
return False
if "secret_hash" not in tx:
tools.log("need the hash of a secret")
return False
for t in txs:
if tools.addr(t) == address and t["type"] == "sign":
# tools.log('can only have one sign tx per block')
return False
if len(tx["jackpots"]) < 1:
tools.log("insufficient jackpots")
return False
length = tools.local_get("length")
if int(tx["on_block"]) != int(length + 1):
out[0] += "this tx is for the wrong block. have " + str(length + 1) + " need: " + str(tx["on_block"])
return False
if tx["on_block"] > 0:
if not tx["prev"] == tools.db_get(length)["block_hash"]:
tools.log("must give hash of previous block")
return False
ran = tools.det_random(tx["on_block"])
for j in tx["jackpots"]:
if type(j) != int or j not in range(200):
tools.log("bad jackpot")
return False
if len(filter(lambda x: x == j, tx["jackpots"])) != 1:
tools.log("no repeated jackpots")
return False
if not tools.winner(B, M, ran, address, j):
tools.log("that jackpot is not valid: " + str(j))
return False
if tx["amount"] < custom.minimum_deposit:
tools.log("you have to deposit more than that")
return False
return True
def create_sign_tx():
on_block=tools.local_get('length')+1
if on_block==0:
time.sleep(1)
return{'error':'not ready'}
r=tools.det_random(on_block)
jackpots=[]
address=tools.local_get('address')
l=max(-1, on_block-1-(custom.long_time*2-custom.medium_time))
election_block=tools.db_get(l+1)
proof=tools.local_get('balance_proofs'+str(l))
if 'root_hash' not in election_block:
return({'error':'database changed'})
a=tools.db_verify(election_block['root_hash'], address, proof)
if a==False:
#tools.log('election block: ' +str(election_block))
#tools.log('proof: ' +str(proof))
return({'error':'not valid proof'})
old_balance=a['amount']
M=custom.all_money
for j in range(custom.jackpot_nonces):
if tools.winner(old_balance, M, r, address, j):
jackpots.append(j)
if len(jackpots)>0:
tx={'on_block':on_block, 'jackpots':jackpots, 'type':'sign', 'amount':M/3000/3}
tx['B']=old_balance
tx['proof']=proof
if proof=='empty':
time.sleep(1)
return {'error':'not ready'}
secrets=tools.local_get('secrets')
if str(on_block) in secrets:
secret=secrets[str(on_block)]
else:
secret=tools.unpackage(tools.package({'salt':str(random.random())+str(random.random()), 'entropy':random.randint(0,1)}))
secrets[str(on_block)]=secret
tools.local_put('secrets', secrets)
tx['secret_hash']=tools.det_hash(secret)
if on_block>0:
block=tools.db_get(on_block-1)
if 'amount' in block and block['amount']==0:
return({'error':'database changed'})
#tools.log('on_block: ' +str(a))
tx['prev']=block['block_hash']
else:
tx= {'error':'no jackpots'}
return tx