The ultimate physical limits of privacy

Area of Science:

• Information Security
• Quantum Physics
• Cryptography

Background:

• The science of secrecy involves inherent risks and paranoia.
• Advanced technological powers pose significant threats to privacy.
• Trust in protection tools and individual choice remains a concern.

Purpose of the Study:

• To explore the feasibility of protecting secrets against superior technological powers.
• To investigate the role of trust in cryptographic tools and personal decision-making.
• To determine if privacy is possible under weak assumptions using quantum cryptography.

Main Methods:

• Analysis of recent developments in quantum cryptography.
• Operational discussion of security and privacy challenges.
• Examination of assumptions related to trust and choice.

Main Results:

• Quantum cryptography provides precise and operational terms to address secrecy concerns.
• The study suggests privacy is achievable under surprisingly weak assumptions.
• It offers a framework for discussing trust in protection technologies.

Conclusions:

• Developments in quantum cryptography enhance the possibility of maintaining privacy.
• Security and privacy can be addressed rigorously, even with limited trust.
• The research provides a foundation for understanding privacy in the digital age.