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Post‑Quantum Cryptography

Encryption

Encryption Public Key Quantum Computing Quantum‑Safe Cryptography

Cryptographic algorithms intended to remain secure against adversaries with scalable quantum computers.

Definition

Post‑quantum cryptography (PQC) develops and deploys primitives (key exchange, signatures) believed to resist quantum attacks (e.g., Shor’s algorithm). Migration includes protocol updates, performance trade-offs, and hybrid schemes.

In plain English Cryptographic algorithms intended to remain secure against adversaries with scalable quantum computers.

Why this matters

Why it matters: Long-lived sensitive data may need protection today against “harvest now, decrypt later” risks.

Example

Example: Deploy hybrid TLS that combines classical and PQC key exchange to protect sessions during the transition period.