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Post-Quantum Cryptography (PQC)

"Cryptographic algorithms designed to be secure against attacks by both classical and quantum computers, intended to replace current public-key algorithms that could be broken by quantum computers."

Post-Quantum Cryptography (PQC)

Post-Quantum Cryptography (PQC) refers to cryptographic algorithms designed to be secure against attacks by both classical and quantum computers. PQC is intended to replace current public-key algorithms that could be broken by sufficiently powerful quantum computers.

Key Characteristics

  • Quantum Resistance: Secure against quantum computer attacks
  • Algorithm Diversity: Multiple mathematical approaches for security
  • Standardization: Ongoing standardization efforts by organizations like NIST
  • Migration Planning: Requires careful planning for implementation

Advantages

  • Future-Proofing: Protection against future quantum computing threats
  • Security Continuity: Maintains security as quantum computing advances
  • Standardization: Growing industry support and standards
  • Risk Mitigation: Reduces long-term cryptographic risks

Disadvantages

  • Performance: May have performance implications compared to current algorithms
  • Complexity: More complex implementation requirements
  • Standardization: Ongoing standardization process
  • Migration Costs: Significant costs for system updates

Best Practices

  • Begin planning for PQC migration now
  • Monitor NIST standardization process
  • Conduct risk assessments for quantum threats
  • Test PQC implementations in non-critical systems

Use Cases

  • Long-term data protection
  • Critical infrastructure security
  • Government and military communications
  • Financial services security