Embedded authentication method in video transmission based on PUF (Physical Unclonable Function)

Abstract

The invention provides an embedded authentication method in video transmission based on PUF (Physical Unclonable Function). The embedded authentication method comprises a setting stage and an identity authentication stage, in the setting stage, the HDMI transmitter and the HDMI receiver share three parameters: IDS, ID and Gn; the HDMI transmitter further comprises a parameter Gn + 1; a random permutation function F is stored in the HDMI transmitter and the HDMI receiver, and the random permutation function F is composed of an LFSR module; the HDMI receiver stores a random permutation function P, and the random permutation function P is composed of a PUF module; in the identity verification stage, the HDMI transmitter and the HDMI receiver exchange their shared information for mutual verification, and in the video transmission process, the HDMI transmitter and the HDMI receiver need to be mutually authenticated for many times. According to the invention, the strong PUF circuit is embedded in the HDMI receiving end, and the corresponding excitation-response pair database is established in the HDMI sending end for mutual authentication, so that the design about safety protection in HDMI video transmission is simplified without losing the safety.

Description

technical field [0001] The invention relates to the technical field of video transmission security protection, in particular to an embedded authentication method in PUF-based video transmission. Background technique [0002] HDMI (High Definition Multimedia Interface-high-definition multimedia digital interface) interface standard, as a new generation of high-definition digital interface specification, has quickly seized the global high-definition Digital Interface Market. As one of the key technologies of HDMI, HDCP (High-bandwidth Digital Content Protection-high-bandwidth digital content protection technology) is widely used in video and auxiliary data transmission of various high-definition digital devices. The essence of HDCP technology is to add a layer of protection to video signals transmitted in digital format to prevent digital video signals from being illegally embezzled. However, HDCP is essentially implemented by logic function devices, and its circuit overhead...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems that the existing HDCP technology has large circuit overhead and high cost, and faces the threat of physical attacks such as reverse engineering, the present invention proposes an embedded authentication method in video transmission based on PUF, embedding a strong authentication method at the HDMI receiving end. The PUF circuit builds a corresponding stimulus-response pair database in the HDMI transmitter for mutual authentication, thereby simplifying the design of security protection in HDMI video transmission without losing its security

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