def open_op(account, sig, userID, permlink):
lam = get_lam(sig)
# E = (pk['n'] ** UID) * lam #计算出e3 即签名的e3 判断是否相等
op = operations.ApplyOpen(
**{
'account': account,
'author': userID,
'lambda': str(lam),
'permlink': permlink,
'json_metadata': ""
})
return op
def main():
# 假设不存在不可用节点(无法判断节点状态)
k = 2
n =2
nodelist =[
'http://101.76.212.247:8090',
'http://101.76.212.247:8094',
'http://101.76.221.115:8092'
]
groupobj = PairingGroup('SS512')
group_signature = GroupSignature(groupobj)
L = group_signature.LGen(n, k)
print(L)
steembase.chains.known_chains['TEST'] = {
'chain_id': '18dcf0a285365fc58b71f18b3d3fec954aa0c141c44e4e5cb4cf777b9eab274e',
'prefix': 'TST', 'steem_symbol': 'TESTS', 'sbd_symbol': 'TBD', 'vests_symbol': 'VESTS'
}
vkliststr= []
uskliststr = []
vklist = []
usklist = []
h1str = ""
clientlist = []
pk = {}
count = 0
groupID = "computer"
userID = "user"
GID = group_signature.group.hash(groupID)
UID = group_signature.group.hash(userID)
print("uid")
print(UID)
#connect node and private posting key
# 记录可用节点的编号！！！！！！
#该循环仅获得gvki和uski 并通过gvki验证uski的正确性
for i in range(n):
clientlist.append(steem.Steem(nodes=[nodelist[i]],keys=["5JHKRW4d7BTU1V1CXDQAPmDfBBFr6XqQoDDUpmPP1JW38s5NjeW"]))
vkliststr.append(clientlist[i].get_vk()['vk'])
vklist.append(group_signature.group.fromstr(vkliststr[i],10, G1))
uskliststr.append(clientlist[i].user_extract(userID))
usklist.append({})
usklist[i]['b0'] = group_signature.group.fromstr(uskliststr[i]['b0'], 10, G2)
usklist[i]['b3'] = group_signature.group.fromstr(uskliststr[i]['b3'], 10, G2)
usklist[i]['b4'] = group_signature.group.fromstr(uskliststr[i]['b4'], 10, G2)
usklist[i]['b5'] = group_signature.group.fromstr(uskliststr[i]['b5'], 10, G1)
print(usklist[i])
if h1str == "":
h1str = clientlist[i].get_pk()['pk']
pk = group_signature.pkGen(h1str)
if(group_signature.verifyUsk(usklist[i],vklist[i],pk,GID, UID)):
count = count + 1
else:
print("key is invalide\n\n")
if count< k:
print("there is not k admin\n")
return
#通过uski计算出最终的usk
usk = group_signature.uskGen(usklist, pk, GID, UID, L,k)
# print(pk)
# ---------------------------------------------------commit 开始
account = 'initminer2'
author = 'nya'
title = "title"
body = "body"
#对title进行群签名得到sig
sig = group_signature.sign(title,usk, pk,GID, UID,groupID)
json_metadata = "abc"
permlink = ''.join(random.choices(string.digits, k=4))
print("permlink is " + permlink)
op = operations.CommitPaper(
**{
"account":account,
"author":"nya",
"permlink":permlink,
"title":title,
"body":body,
"json_metadata":json_metadata,
"c0":str(sig['c0']),
"c5":str(sig['c5']),
"c6":str(sig['c6']),
"e1":str(sig['e1']),
"e2":str(sig['e2']),
"e3":str(sig['e3']),
"c":str(sig['c']),
"s1":str(sig['s1']),
"s2":str(sig['s2']),
"s3":str(sig['s3'])
}
)
#该操作由第二个账户进行
tx = TransactionBuilder(steemd_instance=clientlist[1].steemd,wallet_instance = clientlist[0].wallet,no_broadcast = False)
tx.appendOps(op)
tx.appendSigner('initminer2','posting')
tx.sign()
re = tx.broadcast()
#---------------------------------------------------commit 结束
# ---------------------------------------------------open 开始
okliststr=[]
oklist = []
i = 0
for client in clientlist:
okstr = client.get_ok(str(sig['e1']),str(sig['e2'])) #每个节点返回ok1和ok2
print(okstr)
okliststr.append(okstr)
i = i + 1
if i < k:
print("the number of ok is not enough\n")
return
#通过ok1和ok2 计算lameda
lam = group_signature.open(okliststr,L,k)
E = (pk['n'] ** UID) * lam #计算出e3 即签名的e3 判断是否相等
print("e3",E)
op = operations.ApplyOpen(
**{
'account':account,
'author':userID,
'lambda':str(lam),
'permlink':permlink,
'json_metadata':json_metadata
}
)
tx = TransactionBuilder(steemd_instance=clientlist[0].steemd,wallet_instance = clientlist[0].wallet,no_broadcast = False)
tx.appendOps(op)
tx.appendSigner('initminer2','posting')
tx.sign()
# time.sleep(5)
re = tx.broadcast()
print("re",re)
# ---------------------------------------------------open 结束
return