Integrated data-identity transmission scheme based on a chaotic-driven approach with custom labeling

Area of Science:

• Optoelectronics and Communications
• Information Security
• Applied Physics

Background:

• Physical-layer interception poses a significant threat to optical communication security.
• Existing encryption methods can be vulnerable to sophisticated attacks.
• Integrating data and identity information is crucial for robust security.

Purpose of the Study:

• To propose a novel chaos-driven data-identity integrated transmission scheme.
• To enhance the security of optical communication against physical-layer interception.
• To achieve high-speed and secure data transmission.

Main Methods:

• Embedding hardware device information and key initial values into unique identity labels.
• Utilizing identity labels to drive a chaotic model for generating encryption sequences.
• Superimposing identity labels and ciphertext in the power domain for integrated digital processing.
• Experimental validation in an intensity modulation/direct detection (IM/DD) system over 2 km of seven-core optical fiber.

Main Results:

• Achieved an integrated transmission rate of 110.74 Gb/s.
• Demonstrated successful data recovery by legitimate users using identity labels.
• Unauthorized receivers could not extract keys or decipher the encryption, with a bit error rate (BER) around 0.5.
• Validated the scheme's effectiveness in preventing physical-layer interception.

Conclusions:

• The chaos-driven data-identity integrated transmission scheme significantly enhances optical communication security.
• The method effectively prevents unauthorized interception and decryption.
• The scheme offers a practical solution for secure high-speed optical data transmission.