def recv(s, keys):
global serverPublic
global RUNNING
temp = s.recv(READ_SIZE)
tempPublic = temp.split(',')
serverPublic[0] = int(tempPublic[0])
serverPublic[1] = int(tempPublic[1])
print "Public key Received"
connDets = s.getpeername()
remoteIP = connDets[0]
remotePort = str(connDets[1])
print "connected to " + remoteIP + ":" + remotePort
time.sleep(.1)#sleep used to clean up printing errors due to thread order.
print "Sending the server's public"
print serverPublic
serverPrivate = bruteforce.findPrivate(serverPublic)
print "Brute force cracked the server's private key!"
print "Server's private d equals " + str(serverPrivate)
while RUNNING:
message = s.recv(READ_SIZE)
if message == "":
break
msg_list =[]
for i in range(0, len(message), BLOCK_SIZE):
msg_list.append(message[i: i + BLOCK_SIZE])
decrypted_msg = ""
for msg in msg_list:
decrypted_msg += rsa.decrypt(int(msg), keys)
if decrypted_msg == "message: quit\n\n":
break
print remoteIP + ":" + remotePort + ": " + decrypted_msg
if decrypted_msg.lower() == "quit":
RUNNING = False
s.close()
def recv(conn, private_keys):
"""Called by the recv thread. This function receives the client's public key. It then enters a loop to read from the socket and write to the screen.
It decrypts the message using its own public key."""
global RUNNING
global PUBLIC
temp_public_key = ""
temp_public_key += conn.recv(READ_SIZE)
k1 = temp_public_key.split(",")
PUBLIC.append(int(k1[0]))
PUBLIC.append(int(k1[1]))
print "Public key Received"
time.sleep(.1)
connDets = conn.getpeername()
remoteIP = connDets[0]
remotePort = str(connDets[1])
print remoteIP + ":" + remotePort + " is connected"
#Use brute force method to crack the client's private key
clientPrivate = bruteforce.findPrivate(PUBLIC)
print "Brute force cracked the client's private key!"
print "Client's private d equals " + str(clientPrivate)
#While the client is connected, wait for messages
while RUNNING:
try:
message = conn.recv(READ_SIZE)
except socket.error:
print "Disconnecting... Goodbye."
conn.close()
#Parse out the decoded message into preset block size
msg_list =[]
for i in range(0, len(message), BLOCK_SIZE):
msg_list.append(message[i: i + BLOCK_SIZE])
decrypted_msg = ""
#Decode the message. Note that decrypt works in blocksize chunks
for msg in msg_list:
decrypted_msg += rsa.decrypt(int(msg), private_keys)
print remoteIP + ":" + remotePort + ": " + decrypted_msg
if decrypted_msg.lower() == "quit":
print "Client exited. Type quit to close the server."
RUNNING = False
conn.close()
#Close the socket if we managed to get out of while loop without closing
conn.close()
