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What is Cryptographic Key Management?

The practices and procedures for generating, storing, distributing, rotating, and revoking encryption keys securely.

Key management is often the weakest link in cryptographic systems — strong encryption is useless if keys are poorly managed. Best practices include generating keys with cryptographically secure random generators, storing keys in Hardware Security Modules (HSMs) or managed services (AWS KMS, HashiCorp Vault, Azure Key Vault), separating key encryption keys from data encryption keys, implementing key rotation schedules, maintaining key access logs, and having key revocation procedures. Never hardcode keys in source code or store them alongside encrypted data. The key lifecycle spans generation, distribution, storage, usage, rotation, archival, and destruction.

Related Terms

Supply Chain Attack
A cyberattack that targets less-secure elements in the software supply chain to compromise downstream users and organizations.
Secret Management
The practice of securely storing, accessing, and rotating sensitive credentials like API keys, passwords, and certificates.
OAuth 2.0
An authorization framework that allows third-party applications to access user resources without sharing passwords.
Man-in-the-Middle Attack
An attack where the attacker secretly intercepts and potentially alters communication between two parties who believe they are communicating directly.
DDoS (Distributed Denial of Service)
An attack that floods a target server or network with traffic from multiple sources to overwhelm it and deny service to legitimate users.
Phishing
A social engineering attack that uses fraudulent communications to trick people into revealing sensitive information or installing malware.
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