Method and apparatus for securing clock synchronization in a network

摘要

Aspects of the disclosure provide a method that includes receiving a first packet through a network at a first device. The first packet includes a first message generated according to a precision time protocol and a first encapsulation that encapsulates one or more fields of the first message. Further, the method includes security-verifying the first packet based on the first message and the first encapsulation, and processing the first message according to the precision time protocol after the first packet is security-verified.

主权项

1. A method of a time synchronization system, the method comprising:
receiving a first packet through a communication network at a first device, the first packet including a first message generated according to a precision time protocol (PTP), the first message including a first encapsulation; security-verifying the first packet based on the first message according to a security protocol; processing the first message according to the PTP after the first packet is security-verified, the first message including at least fields of (i) PTP header, (ii) PTP payload, (iii) zero or more type-length-values (TLVs), and (iv) the first encapsulation of security TLV that encapsulates the PTP header, the PTP payload, and the zero or more TLVs of the first message according to the security protocol; and transmitting the first packet according to the PTP with the security verification and measuring a transmitting time.