Preparing Your Enterprise APIs for Post-Quantum Cryptography: A Practical Migration Blueprint

Short summary

A practical blueprint for migrating enterprise APIs to NIST-standardized post-quantum cryptography (ML-KEM and ML-DSA) to defend against future quantum attacks on RSA and ECC. Recommends a hybrid approach combining classical and lattice-based algorithms, abstracting crypto operations via middleware proxies, and a three-phase rollout: discovery, hybrid enforcement, and production cutover. Includes a Spring Boot interceptor example for cryptographic header validation.

• •Audit TLS termination, JWT signing, and service-to-service encryption before migrating
• •Adopt hybrid cryptosystems (classical + post-quantum) to maintain compliance while future-proofing
• •Use middleware proxies to isolate crypto operations and enable phased rollout without rewriting business logic

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