HSM (Hardware Security Module) is a dedicated physical device that generates, stores, and manages cryptographic keys in tamper-resistant hardware.
HSM
HSM (Hardware Security Module) is a dedicated physical device that generates, stores, and manages cryptographic keys in tamper-resistant hardware.
Why It Matters
HSMs provide the highest level of key protection, meeting FIPS 140-2 Level 3+ requirements. They ensure that encryption keys never leave the hardware boundary. Cloud HSMs (AWS CloudHSM, Azure Dedicated HSM) make this technology accessible to SaaS providers.
How It Works
The HSM generates and stores encryption keys internally. Cryptographic operations (encrypt, decrypt, sign) are performed inside the HSM. The key material never leaves the device — only the results of operations are returned to the calling application.
Best Practices
- Use HSM for your most sensitive encryption keys
- Implement proper access controls for HSM administration
- Maintain HSM firmware and audit logs
- Plan for HSM availability and disaster recovery
Common Mistakes
- Using software keys when HSM is required by compliance
- Not backing up HSM key material securely
- Granting HSM admin access too broadly
How ShieldKey Helps
ShieldKey uses strong software encryption (AES-256-GCM) for API key storage. For organizations requiring HSM-backed encryption, ShieldKey's architecture supports integration with cloud HSM services.
Try ShieldKey FreeFAQ
Do I need an HSM for API key management?
For most teams, ShieldKey's AES-256-GCM software encryption provides excellent security. HSMs are typically required for PCI DSS Level 1 or government applications.