def server(folder):
HOST = ''
PORT = 4567
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#Create server socket
try:
s.bind((HOST, PORT))
except socket.error as msg:
print('Bind failed. Error Code : ' + str(msg[0]) + ' Message ' +
msg[1])
sys.exit()
#Start listening on socket
s.listen(10)
print('Server started ...')
#Start upload counter
counter = 0
#now keep talking with the client
while 1:
#wait for client - conn is input stream
conn, addr = s.accept()
#Increment counter
counter += 1
print("Accepted connection " + str(counter) + ".")
#negotiate private keypair
keyfile = open('keypair_server.xml', 'r')
sigfile = open('signature_server.sig', 'rb')
signature = sigfile.read()
tree = ET.parse(keyfile)
root = tree.getroot()
pr_k_pem = root.findtext('private_key')
pu_k_pem = root.findtext('public_key')
rsa_private_key = serialization.load_pem_private_key(
pr_k_pem.encode(), password=None, backend=default_backend())
#rsa_public_key = serialization.load_pem_public_key(pu_k_pem.encode(), backend=default_backend())
sk = crypto.negotiate_asymmetric_session_key(conn, rsa_private_key,
pu_k_pem, signature)
#Open file to write to
f = open(folder + "/" + str(counter), 'wb')
sess_k = sk[0:16]
mac_k = sk[16:32]
hmac = mac.MAC(mac_k)
crypto.decrypt_AES_with_key_mac(conn, f, sess_k, hmac)
f.close()
print("Closed connection.")
s.close()
def server(folder):
HOST = ''
PORT = 4567
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#Create server socket
try:
s.bind((HOST, PORT))
except socket.error as msg:
print('Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
sys.exit()
#Start listening on socket
s.listen(10)
print('Server started ...')
#Start upload counter
counter = 0;
#now keep talking with the client
while 1:
#wait for client - conn is input stream
conn, addr = s.accept()
#Increment counter
counter += 1
print("Accepted connection "+str(counter)+".");
#negotiate private keypair
keyfile = open('keypair_server.xml', 'r')
sigfile = open('signature_server.sig', 'rb')
signature = sigfile.read()
tree = ET.parse(keyfile)
root = tree.getroot()
pr_k_pem = root.findtext('private_key')
pu_k_pem = root.findtext('public_key')
rsa_private_key = serialization.load_pem_private_key(pr_k_pem.encode(), password=None, backend=default_backend())
#rsa_public_key = serialization.load_pem_public_key(pu_k_pem.encode(), backend=default_backend())
sk = crypto.negotiate_asymmetric_session_key(conn, rsa_private_key, pu_k_pem, signature)
#Open file to write to
f = open(folder+"/"+str(counter), 'wb')
sess_k = sk[0:16]
mac_k = sk[16:32]
hmac = mac.MAC(mac_k)
crypto.decrypt_AES_with_key_mac(conn, f, sess_k, hmac)
f.close()
print("Closed connection.")
s.close()
def server(folder):
HOST = ''
PORT = 4567
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
#Create server socket
try:
s.bind((HOST, PORT))
except socket.error as msg:
print('Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
sys.exit()
#Start listening on socket
s.listen(10)
print('Server started ...')
#Start upload counter
counter = 0;
#now keep talking with the client
while 1:
#wait for client - conn is input stream
conn, addr = s.accept()
#Increment counter
counter += 1
print("Accepted connection "+str(counter)+".");
#negotiate private keypair
rsa_private_key = rsa.generate_private_key(public_exponent=65537, key_size=2048, backend=default_backend())
rsa_public_key = rsa_private_key.public_key()
sk = crypto.negotiate_asymmetric_session_key(conn, rsa_private_key, rsa_public_key)
#Open file to write to
f = open(folder+"/"+str(counter), 'wb')
sess_k = sk[0:16]
mac_k = sk[16:32]
hmac = mac.MAC(mac_k)
crypto.decrypt_AES_with_key_mac(conn, f, sess_k, hmac)
f.close()
print("Closed connection.")
s.close()
