Every encrypted system depends on keys living somewhere: HSMs, key-management services, configuration files, or — badly — source code. Management defines who and what can create, access, wrap, rotate, and destroy keys, how keys are backed up and recovered, and what happens when a key is suspected compromised.
Key points
Key protectionHardware-backed storage, least-privilege access, separation of duties for key operations, and audited usage.
Full lifecycleGeneration strength, rotation intervals, escrow or recovery options, versioning for re-encryption, and verified destruction.
Important limitationStrong algorithms cannot rescue weak key handling. Most real-world cryptographic failures are operational — keys in code, unrotated keys, lost keys that render data permanently unreadable — not broken ciphers.