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()