Cryptographic Keys, Provisioning, and Device Lifecycle

Overview

Modern secure systems rely on three tightly connected pillars:

• Cryptographic Keys — the secrets that define identity, trust, and confidentiality
• Provisioning — the secure process that injects or derives those secrets during manufacturing
• Device Lifecycle — the set of states that determine what operations are allowed at each stage of a device’s life

These three elements form the foundation of a secure SoC. Keys define who the device is, provisioning defines how it becomes trusted, and lifecycle defines when certain operations are allowed or forbidden.

This page provides a conceptual overview and links to the detailed child pages.

The Three Pillars of Device Trust

This diagram illustrates the conceptual flow:

• Keys define the trust anchors
• Provisioning binds keys to hardware
• Lifecycle enforces what can happen at each stage

Why These Three Concepts Must Be Understood Together

Keys without provisioning

→ cannot be injected securely, leading to cloning or key leakage.

Provisioning without lifecycle

→ allows attackers to re-enter manufacturing/debug modes.

Lifecycle without strong keys

→ cannot authenticate firmware, updates, or OEM tools.

Together, they form the security backbone of any modern SoC.

Child Pages

These pages provide the detailed, technical, and architectural explanations:

1. Cryptographic Keys — Concepts and Hierarchy

Symmetric vs asymmetric keys, key hierarchy, key wrapping, PUF-derived secrets, usage domains.

2. Secure Provisioning — Manufacturing and Injection Flow

Foundry → OEM → field provisioning, secure key injection, encrypted channels, traceability.

3. Device Lifecycle — States and Transitions

Manufacturing, OEM, user, RMA, decommissioning, irreversible transitions, lifecycle enforcement.

(You will link these once published.)

Relationship with Other Security Topics

This parent page connects naturally to:

• Secure Boot and Key Management
• Hardware Security Modules and PUFs
• Firmware Update and Recovery Mechanisms
• Anti‑Tamper and Fault Injection Protection
• System Security Architecture

Summary

This page introduces the three foundational concepts that define trust in a secure system:

• Keys → what the device is
• Provisioning → how the device becomes trusted
• Lifecycle → when the device can or cannot perform sensitive operations

The child pages provide the detailed explanations and diagrams.