def TGS():
Key_tgs = 'cdefghi'
# 从Client接收message3
# 从Client接收lenofticket(str型)
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
localhost = socket.gethostname()
port = 10001
s.bind(("localhost", port))
s.listen(5)
cs, address = s.accept()
print("got connection : ", address)
message3 = cs.recv(1024)
message3 = message3.decode()
print("messge3 = ", message3)
print("1")
lenofticket = cs.recv(1024)
print("2")
lenofticket = lenofticket.decode()
print("len = ", lenofticket)
#message3 = '192.168.43.204*928F4FE9A2F3D3CED3D397336CC8B2EEEC307CAEB9A0471F8127A8CFD08E295189D108A74C4DD9D61666640358B672B03E3CE0B836AE132C175F44F4F1488D50072D6EE80E2A596368ED77CEC893F50B********6662F19DEF926DBD87A95C21E5C4C0D3D3D397336CC8B2EEFF08097D8012F6E2A02087B20DB77FE24536257798F303C3E9AB683C1432B9B0'
lenofmessage = len(message3)
# lenofticket = '168'
ip_Server = message3[0:15]
ip_Server = tostr.takeout(ip_Server)
ticket_TGS = message3[15:int(lenofticket) + 15]
ticket_TGS = tostr.takeout(ticket_TGS)
ticket_TGS = des_de.test(ticket_TGS, Key_tgs)
print("ticket_TGS = ", ticket_TGS)
Key_ctgs_fromclient = ticket_TGS[0:7]
ip_Client_fromclient = ticket_TGS[7:22]
ip_Client_fromclient = tostr.takeout(ip_Client_fromclient)
print("ip_Client_fromclient = ", ip_Client_fromclient)
AD_Client_fromclient = ticket_TGS[22:37]
AD_Client_fromclient = tostr.takeout(AD_Client_fromclient)
print("AD_Client_fromclient = ", AD_Client_fromclient)
ip_TGS_fromclient = ticket_TGS[37:52]
ip_TGS_fromclient = tostr.takeout(ip_TGS_fromclient)
print("ip_TGS_fromclient = ", ip_TGS_fromclient)
ts2_fromclient = ticket_TGS[52:70]
ts2_fromclient = tostr.takeout(ts2_fromclient)
print("ts2_fromclient = ", ts2_fromclient)
lifetime2_fromclient = ticket_TGS[70:78]
lifetime2_fromclient = tostr.takeout_0(lifetime2_fromclient)
print("lifetime2 = ", lifetime2_fromclient)
Authencator_client = message3[int(lenofticket) + 15:lenofmessage]
Authencator_client = tostr.takeout(Authencator_client)
Authencator_client = des_de.test(Authencator_client, Key_ctgs_fromclient)
print("Authencator_c = ", Authencator_client)
ip_Client_fromclient2 = Authencator_client[0:15]
ip_Client_fromclient2 = tostr.takeout(ip_Client_fromclient2)
print("ip_Client_fromclient2 = ", ip_Client_fromclient2)
AD_Client_fromclient2 = Authencator_client[15:30]
AD_Client_fromclient2 = tostr.takeout(AD_Client_fromclient2)
print("AD_Client_fromclient2 = ", AD_Client_fromclient2)
ts3_fromclient = Authencator_client[30:48]
ts3_fromclient = tostr.takeout(ts3_fromclient)
print("ts3 = ", ts3_fromclient)
message4 = TGS_to_Client(ip_Client_fromclient, ip_Server,
Key_ctgs_fromclient)
print("message4 = ", message4)
cs.send(message4.encode())
cs.close()
def SERVER():
Key_server = 'bcdefgh'
#message5 = '928F4FE9A2F3D3CED3D397336CC8B2EEEC307CAEB9A0471F8127A8CFD08E295189D108A74C4DD9D61666640358B672B00FBB826366B28F2BBC712109B4856D6EA4910B74D4E183C668ED77CEC893F50B9B2431C2F876C9CA2DDB21338EE8003F4421A988FA40BBB991D4E08E7FA7594CF47D82B5A28666B16460CABC8840EF21E9AB683C1432B9B0'
#lenofticket_server = '160'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
localhost = socket.gethostname()
port = 10002
s.bind(("localhost", port))
s.listen(5)
cs, address = s.accept()
print("got connection : ", address)
message5 = cs.recv(1024)
message5 = message5.decode()
print("messge5 = ", message5)
lenofticket = cs.recv(1024)
lenofticket_server = lenofticket.decode()
print("len = ", lenofticket)
ticket_server = message5[0:int(lenofticket_server)]
ticket_server = des_de.test(ticket_server, Key_server)
ticket_server = tostr.takeout(ticket_server)
print("ticket_server = ", ticket_server)
Key_cv = ticket_server[0:7]
print("Key_cv = ", Key_cv)
ip_Client = ticket_server[7:22]
ip_Client = tostr.takeout(ip_Client)
print("ip_Client = ", ip_Client)
AD_client = ticket_server[22:37]
AD_client = tostr.takeout(AD_client)
print("AD_client = ", AD_client)
ip_Server = ticket_server[37:52]
ip_Server = tostr.takeout(ip_Server)
print("ip_Server = ", ip_Server)
ts4 = ticket_server[52:70]
ts4 = tostr.takeout(ts4)
print("ts4 = ", ts4)
lifetime4 = ticket_server[70:78]
lifetime4 = tostr.takeout_0(lifetime4)
print("lifetime4 = ", lifetime4)
Authencator_c = message5[int(lenofticket_server):len(message5)]
Authencator_c = des_de.test(Authencator_c, Key_cv)
print("Authencator_c = ", Authencator_c)
ip_Client_fromAu = Authencator_c[0:15]
ip_Client_fromAu = tostr.takeout(ip_Client_fromAu)
print("ip_Client_fromAu = ", ip_Client_fromAu)
AD_client_fromAu = Authencator_c[15:30]
AD_client_fromAu = tostr.takeout(AD_client_fromAu)
print("AD_client_fromAu = ", AD_client_fromAu)
ts5 = Authencator_c[30:]
ts5 = tostr.takeout(ts5)
ts5 = float(ts5)
print("ts5 = ", ts5)
message6 = Server_to_Client(ts5, Key_cv)
print("message6 = ", message6)
cs.send(message6.encode())
cs.close()
def CLIENT():
Key_c = 'abcdefg' # Key_Client
message1 = Client_to_AS()
localhost = socket.gethostname()
port_AS = 10000
port_TGS = 10001
port_Server = 10002
print("mesage1 = ", message1)
"""s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect((localhost,port_AS))
s.send(message1.encode('utf-8'))
message2 = s.recv(1024)
message2 = message2.decode()
print("message2 = ",message2)
s.close()"""
message2 = 'D3A41D74DCE667CAD3D397336CC8B2EE06A83080661277324F876410EE84ABECC6B0D269AD00758D98B3A781D438F4A6D937FF4846783646DCB15C599E2C137B2D05A915E1BC78D60714C9C1477EC21E3548C7C732258EABAFE786C2F56DEEB6F81F416ADB8E3CFBFDFEBAC756938898C4C22A9EAEAE084BD6A7A513DDF0B8D0F4E418C00D3AE157D17B2A230E64D2A84AA3FCDF931C1BC5D1250522F2248F8D4816C86CB5DAEB1FEF5C3DB8F84256B4E26239A103B0D406D28D90703D277F2DAD0E6439F7333D2E47AAA1EB7B5E0CDCE9AB683C1432B9B0'
message2 = des_de.test(message2, Key_c)
print("message2 = ", message2)
Key_ctgs = message2[0:7]
print("Key_ctgs = ", Key_ctgs)
ip_TGS_fromAS = message2[7:22]
ip_TGS_fromAS = tostr.takeout(ip_TGS_fromAS)
print("ip_TGS = ", ip_TGS_fromAS)
ts2 = message2[22:40]
ts2 = tostr.takeout(ts2)
ts2 = float(ts2)
print("ts2 = ", ts2)
lifetime2 = message2[40:48]
lifetime2 = tostr.takeout_0(lifetime2)
print("lifetime2 = ", lifetime2)
ticket_TGS = message2[48:]
print("ticket_TGS = ", ticket_TGS)
# 给TGS发送报文
message3, lenofticket_tgs = Client_to_TGS(ticket_TGS, Key_ctgs)
print("message3 = ", message3)
print("lenofticket = ", lenofticket_tgs)
# 发送报文到TGS，再把lenofticket也发送过去
"""tgs = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print("1")
tgs.connect(("localhost", port_TGS))
print("2")
tgs.send(message3.encode('utf-8'))
print("3")
time.sleep(1)
tgs.send(lenofticket_tgs.encode('utf-8'))
message4 = tgs.recv(1024)
message4 = message4.decode()
print("message4 = ", message4)
tgs.close()"""
# 从TGS接收到message4
message4 = '49A728EEEC2411B0D76FA69341FB845BEA16784472B24B6150E3E1170BF397C17C358F1F52DA4E7A33575AC1B0E26CD9BDF61603A6079C03648F48FD5D77180D5A7A15C1AA4D2F37BBE8E0DA85F4272C8C9AA4474D1512E35BE1F8CAF1CF1F068C29AD49EB7340CDA749078B3FFF743630CF7A311678C55F65197A570A5E4DA5F7242F37BD68F4A85DCED3BFB43AA654A51CD2E64D6242A6596922B1756A635313E24EB0456C244FADEDD8DA50377DF567994303910A8CA6CC130C743E83F60867D77BE9F9CC2B0E7358F0ED7796932F'
message4 = des_de.test(message4, Key_ctgs)
message4 = tostr.takeout(message4)
print("message4 = ", message4)
lenofmessage4 = len(message4)
Key_cv = message4[0:7]
print("Key_cv = ", Key_cv)
ip_Server = message4[7:22]
ip_Server = tostr.takeout(ip_Server)
print("ip_Server = ", ip_Server)
ts4 = message4[22:40]
ts4 = tostr.takeout(ts4)
print("ts4 = ", ts4)
ticket_Server = message4[40:lenofmessage4]
print("ticket_Server = ", ticket_Server)
message5, lenofticket_server, ts5 = Client_to_Server(ticket_Server, Key_cv)
lenofticket_server = str(lenofticket_server)
ts5 = tostr.takeout(ts5)
ts5 = float(ts5)
print("message5 = ", message5)
print("lenofticket_server = ", lenofticket_server)
print("ts5 = ", ts5)
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.connect(("localhost", port_Server))
server.send(message5.encode('utf-8'))
time.sleep(1)
server.send(lenofticket_server.encode('utf-8'))
message6 = server.recv(1024)
message6 = message6.decode()
print("message6 = ", message6)
server.close()
message6 = des_de.test(message6, Key_cv)
ts6 = tostr.takeout(message6)
ts6 = float(ts6)
print("ts6 = ", ts6)
if 1 == ts6 - ts5:
print("Get server authentication!!!")
else:
print("The authentication of server is wrong!!!")