Gravity field security authentication method and device based on projection angle coding

Abstract

The application discloses a gravity field security authentication method and device based on projection angle coding. n} mapping is carried out into a corresponding topological Chen number modulation parameter sequence, and a gravity anomaly pulse sequence is generated by driving a topological Chen number modulator in sequence to serve as an authentication challenge signal. The real measured projection angle of each pulse is extracted at a receiving end and compared with an authorized sequence, so that unconditional security authentication of a physical layer is realized. The authentication signal can penetrate seawater, rock layers and metal electromagnetic shielding layers, is not affected by electromagnetic interference, and the projection angle sequence has unclonability, so that signal interception, copying, replay and man-in-the-middle attacks can be fundamentally prevented. The application provides a brand-new physical layer authentication solution for high-security level places such as nuclear facilities, military command centers and financial data centers.

Description

Technical Field

[0001] This invention belongs to the field of quantum secure communication and authentication technology, specifically relating to a method and apparatus for physical layer secure authentication using a gravity anomaly signal generated by topological Chern number manipulation and projection angle sequence encoding. This invention is particularly suitable for physical layer anti-spoofing authentication scenarios in high-security facilities such as nuclear facilities, military command centers, and financial data centers. Background Technology

[0002] Traditional security authentication methods are mainly divided into three categories: The first type is authentication based on knowledge factors, such as passwords and PIN codes, which are at risk of being stolen, brute-forced, or subjected to social engineering attacks. The second type is authentication based on holding factors, such as smart cards, USB tokens, and digital certificates, which are susceptible to being copied, lost, or subjected to man-in-the-middle attacks. The third category is authentication based on biometric factors, such as fingerprints, faces, and irises, which are susceptible to being counterfeited, sensor deception, and privacy leaks. All three authentication methods described above operate at the application or network layer. Their common fundamental flaw lies in the fact that authentication signals can be intercepted, copied, and replayed at the physical layer. Electromagnetic signals can be sniffed, decrypted, and forged, and biometric signals can be bypassed through sensor spoofing attacks. In recent years, quantum key distribution technology has provided unconditionally secure communication based on the principles of quantum mechanics, but it still relies on classical electromagnetic wave channels for key negotiation, and the equipment is complex, costly, and has limited transmission distance. Therefore, the industry urgently needs a new authentication method that possesses anti-interception, anti-copying, and anti-spoofing capabilities at the physical layer. Physical layer authentication technology based on gravity field signals provides a novel solution for this purpose. Summary of the Invention

[0003] (a) Purpose of the invention This invention provides a gravity field security authentication method and apparatus based on projection angle coding, aiming to solve the technical problem that existing authentication methods are easily intercepted, copied and spoofed at the physical layer. By utilizing the omnidirectional penetration of gravity field signals and the non-cloning nature of topological Chern number modulation, unconditional security authentication at the physical layer is achieved. (II) Technical Principles This invention is based on the projection geometry principle of geometric unified field theory. In this invention, the key information for security authentication is encoded using a sequence of projection angles: The transmitter operates according to a preset projection angle sequence θ1, θ2, …, θ n The corresponding gravity anomaly pulse sequence is generated sequentially through topological Chern number control. Each projection angle θ_i corresponds to a unique topological Chern number control parameter ΔC_i, thereby generating a gravity anomaly pulse with specific waveform characteristics, including amplitude, rise slope, and duration. The receiver receives the pulse sequence through a high-sensitivity quantum gravity sensor, extracts the projection angle features of each pulse, and compares them with the locally stored authorized projection angle sequence. Since the generation of the projection angle sequence depends on the precise control of the quantum state of the topological material, and the gravitational field signal penetrates all electromagnetic shielding media, no third party can intercept, copy, or forge the authentication signal at the physical layer. (III) Technical Solution A gravity field security authentication method based on projection angle coding, characterized by comprising the following steps: S1: The authentication server generates a random projection angle sequence Θ = {θ1, θ2, …, θ n} and store it in the local authorization database; S2: Convert each projection angle θ_i in the projection angle sequence into the corresponding topological Chern number control parameter ΔC_i; S3: According to the timing of the projection angle sequence, the topological Chern modulator is driven sequentially to generate the corresponding gravity anomaly pulse sequence, which is then transmitted to the terminal to be authenticated as an authentication challenge signal; S4: The terminal to be authenticated receives the gravity anomaly pulse sequence and extracts the measured projection angle θ'_i corresponding to each pulse; S5: Compare the measured projection angle sequence Θ' = {θ'_1, θ'_2, …, θ'_n} with the locally stored authorized projection angle sequence. If the matching error is within the preset threshold range, the authentication is successful. A gravity field safety authentication device based on projection angle encoding, characterized in that it comprises: The authentication initiator includes: - a projection angle sequence generator for generating a random projection angle sequence; - a Chern number modulation mapper for converting each projection angle into a corresponding topological Chern number modulation parameter; - a topological Chern number modulator for sequentially generating a gravity anomaly pulse sequence according to the modulation parameters; and - a timing controller for controlling the transmission timing and interval of the pulse sequence. The authentication response unit includes: - a gravity anomaly sensor array for receiving the gravity anomaly pulse sequence; - a projection angle extractor for extracting the measured projection angle from each pulse; - a sequence comparator for comparing and verifying the measured projection angle sequence with the authorized projection angle sequence; and - an authentication result outputter for outputting the authentication pass or authentication fail result. (iv) Beneficial effects First, it achieves unconditional security authentication at the physical layer, with authentication signals penetrating all electromagnetic shielding media and impossible to intercept or eavesdrop on. Second, the projection angle sequence is non-clonable, meaning that no third party can replicate the authentication signal without knowing the precise parameters of the quantum state of the topological material. Third, the gravity field authentication signal is not affected by electromagnetic interference and can work stably in strong electromagnetic countermeasures environments. Fourth, the authentication process does not require the transmission of any key or password information, fundamentally eliminating man-in-the-middle attacks and replay attacks. Detailed Implementation

[0004] Example 1 A gravity field authentication transmitter is deployed at the entrance of the nuclear facility, and authorized personnel wear authentication terminals with built-in quantum gravity sensors. The transmitter emits authentication challenge signals according to a preset projection angle sequence. The terminal receives and demodulates the signals, then compares them with the local authorization sequence. If a match is found, the access control is activated. The entire authentication process is completed within milliseconds, and the signals can penetrate concrete shielding walls several meters thick. Example 2 A gravity field authentication system is deployed in the military command center, requiring all internal communication terminals to complete gravity field physical layer authentication before each communication session. The authentication signal penetrates metal shielding layers and electromagnetic interference environments, ensuring authentication can still be completed under strong electronic warfare conditions. Example 3 By deploying gravity field authentication devices between server racks in financial data centers, servers can perform physical layer identity verification through gravity field signals. Even if an attacker obtains a network layer digital certificate, they will still fail physical layer authentication if they cannot generate the correct projection angle sequence, thus effectively preventing internal threats. Example 4 Gravity field authentication receivers are deployed on drones or autonomous vehicles, with ground base stations periodically transmitting projection-angle-coded gravity field authentication signals. Vehicles verify the base station's identity by demodulating the authentication signals, preventing GPS spoofing attacks. Attached Figure Description

[0005] Figure 1 This is a block diagram of the overall architecture of the gravity field safety authentication system with projection angle encoding according to the present invention. Figure 2 This is a schematic diagram showing the mapping relationship between the projection angle sequence and the topological Chern number control parameter. Figure 3 A schematic diagram of the frame structure and projection angle encoding of the gravity field authentication signal. Figure 4 This is a flowchart of the receiving end projection angle extraction and sequence alignment process. Figure 5 This is a schematic diagram illustrating the application of the present invention in a typical high-security scenario. Terminology Explanation

[0006] Projection angle: The angle subtended when the high-dimensional total space is projected onto four-dimensional spacetime. In this invention, it serves as the encoding carrier of authentication information. Each projection angle value corresponds to a unique topological Chern number control parameter. Projection angle sequence: A sequence composed of multiple projection angles arranged in a preset time order, which serves as the authentication key of this invention and has randomness, uniqueness and non-cloning properties. Chern number control parameters: control parameters used to drive the topological Chern number modulator to generate specific gravity anomaly pulses. Each projection angle θ_i uniquely corresponds to a ΔC_i.

Claims

1. A gravity field security authentication method based on projection angle coding, characterized in that, Includes the following steps: S1: Generate a random sequence of projected angles Θ = {θ1, θ2, …, θ n }, stored in the authorization database; S2: Convert each projection angle θ_i into the corresponding topological Chern number control parameter ΔC_i; S3: According to the timing of the projection angle sequence, the topological Chern modulator is driven sequentially to generate a gravity anomaly pulse sequence, which is then transmitted as an authentication challenge signal; S4: The receiving end extracts the measured projection angle θ'_i corresponding to each pulse to form the measured sequence Θ'; S5: Compare the measured sequence Θ' with the authorized sequence Θ. If the matching error is within the preset threshold range, the authentication is successful.

2. A gravity field safety authentication device based on projection angle encoding, characterized in that, include: The authentication initiator includes: - A projection angle sequence generator, used to generate random projection angle sequences; - A Chern number control mapper, used to convert each projection angle into a corresponding topological Chern number control parameter; - A topological Chern number modulator, used to generate a gravity anomaly pulse sequence sequentially according to the control parameters; The authentication response terminal includes: - a gravity anomaly sensing array for receiving the gravity anomaly pulse sequence; - Projection angle extractor, used to extract the measured projection angle from each pulse; - Sequence aligner, used to compare and verify the measured projection angle sequence with the authorized projection angle sequence.

3. The method according to claim 1, characterized in that, The projection angle sequence is generated using a true random number generator or a quantum random number generator to ensure that the projection angle sequence for each authentication is unpredictable.

4. The method according to claim 1, characterized in that, The matching error within the preset threshold range includes: the absolute error of each projection angle in the sequence does not exceed ±0.001 radians, and the overall root mean square error of the sequence does not exceed 0.005 radians.

5. The apparatus according to claim 2, characterized in that, The gravity anomaly sensing array is based on the cold atom interference principle or the spin-momentum locking effect of surface states in topological insulators. Its angular resolution is better than 0.001 radians.

6. The method according to claim 1, characterized in that, The authentication challenge signal penetrates seawater, rock strata, and metal electromagnetic shielding layers, achieving physical layer security authentication that ignores electromagnetic attenuation.

7. The method according to claim 1, characterized in that, By introducing a timestamp and sequence number mechanism, the emission time t_i of each projection angle pulse is also used as one of the authentication factors to prevent replay attacks.

8. The method according to claim 1, characterized in that, The transmission power of the authentication challenge signal is configured to be receivable within a preset spatial range, and the receiving end outside the spatial range cannot demodulate and extract the effective projection angle.

9. The method according to claim 1, characterized in that, The transmission and reception of the authentication challenge signal constitute a two-way handshake protocol. After successful authentication, the receiving end returns a confirmation signal modulated by the projection angle to the transmitting end. The confirmation signal includes the identity identifier and timestamp of the receiving end.

10. The apparatus according to claim 2, characterized in that, The authentication initiator and the authentication response are integrated into the same physical entity, forming a portable gravity field security authentication token. The token supports physical layer authentication in mobile scenarios and is powered by a built-in battery or a wireless power supply module.

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