Introduction: The Quantum Imperative and the Resource Lifecycle The transition to Post-Quantum Cryptography (PQC) represents a fundamental shift in how we secure digital infrastructure against quantum-enabled cryptanalysis. Algorithms like Kyber—a lattice-based Key Encapsulation Mechanism (KEM)—rely on complex mathematical foundations. However, the strategic implementation of these algorithms requires more than just mathematical hardness; it demands a paradigm shift in how software architectures treat cryptographic material. In high-assurance systems, keys must be treated as strict resources with mandatory lifecycles, rather than simple, unrestricted data. In the context of the Kyber algorithm, "ephemeral keys" (such as the Secret Key, or sk) are short-lived materials generated to establish session secrets. Because these keys are designed to exist only for a transient period, their security depends entirely on rigorous lifecycle management.…