A Deniable Encryption Method for Modulation-Based DNA Storage.

Area of Science:

• Bioinformatics
• Cryptography
• Data Storage

Background:

• Deoxyribonucleic acid (DNA) is emerging as a viable medium for next-generation digital storage due to advances in synthesis and sequencing.
• Securing information stored in DNA is crucial as the technology nears practical implementation.
• Deniable encryption offers a method to decrypt different information from the same ciphertext, enabling the provision of plausible fake data under coercion.

Purpose of the Study:

• To propose a novel deniable encryption method specifically designed for DNA data storage.
• To enhance the security and practicality of information stored within DNA by leveraging inherent noise channels.

Main Methods:

• Developed a deniable encryption technique that utilizes DNA noise channels for obfuscation.
• Encrypted true and fake messages using similar modulation carriers.
• Introduced inherent errors to the encrypted data to mask the true information.

Main Results:

• The proposed method successfully conceals true information indistinguishably among fabricated data.
• Both coercive adversaries and legitimate receivers can accurately decrypt their intended information.
• Security analysis confirmed the method's robustness against common cryptographic attacks.

Conclusions:

• The novel deniable encryption method offers a practical and reliable solution for securing DNA-stored data.
• It provides a significant advantage over conventional DNA cryptography methods that rely on complex biological operations.
• This approach is well-suited for large-scale DNA storage applications requiring robust data security and deniability.