Quantum-Resistant ML-KEM and ML-DSA in Java

Java 24 introduced native support for two post-quantum cryptographic algorithms via JEP 496 and JEP 497: ML-KEM (Module-Lattice-Based Key Encapsulation Mechanism) and ML-DSA (Module-Lattice-Based Digital Signature Algorithm). Both are based on the computationally hard M-LWE problem and are resistant to quantum computer attacks, unlike RSA or Diffie-Hellman. The tutorial walks through generating key pairs, encapsulating/decapsulating shared secrets with ML-KEM using the new KEM API, and signing/verifying messages with ML-DSA using the Signature API. Three security parameter sets are supported for each algorithm (ML-KEM-512/768/1024 and ML-DSA-44/65/87), with 768 and 65 as respective defaults.