公开(公告)号：US11374751B2

公开(公告)日：2022-06-28

申请号：US16418718

申请日：2019-05-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ankit Kumar Sinha ,  Anil Kumar Srirangapatna Nagesh

IPC: H04L29/06 ,  H04L9/12 ,  H04L9/08 ,  H04L9/32 ,  H04L9/40 ,  H04L9/14 ,  G06F21/72 ,  H04L69/28 ,  H04J3/06

Abstract: Systems, methods and devices for adding key chain and key derivative functions (KDF) support for Network time protocol (NTP) authentication using password based key derivation functions-NTP (PBKDF-NTP) are disclosed. In one embodiment, a method includes generating time bound multiple short lived keys instead of long lived keys for NTP security which ensures that attacker will not get enough time to crack the key values. The usage of time bound multiple short lived keys instead of long lived keys for NTP security will ensure that attacker will not get enough time to crack the key values within key lifetime. Hence man-in-middle attack can be avoided in NTP.

公开(公告)号：US11528084B2

公开(公告)日：2022-12-13

申请号：US17018593

申请日：2020-09-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vikram Choudhary ,  Ankit Kumar Sinha ,  Hui Ni

IPC: H04J3/06 ,  H04L61/4511

Abstract: A method and system for enhanced time synchronization with lesser delay and jitter, from a gateway of a network or an external standard time source, over the internet, in a traditional network, including SDN, by NTP clients like newly added devices, spawned VMs and the like, by automatic deployment of the distributed NTP service through DHCP and DNS servers by spawning NTP demons (ntpd), according to the time synchronization requests received, thereby offloading the NTP functionality of the gateway and decreasing NTP traffic.