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Cryptology Academy · Lesson

Key Escrow, Backup & Recovery Procedures

Design a key backup strategy with Shamir secret sharing and m-of-n recovery.

The Key Escrow Problem

Key escrow stores a copy of a private key with a trusted third party (regulator, employer, law enforcement). It enables recovery but creates a target — escrow systems are high-value attack surfaces.

Corporate Key Escrow Requirements

Enterprises escrow encryption keys so that if an employee is unavailable, IT can decrypt corporate data. This is mandated by policies and regulations (e.g., GDPR data-subject access obligations).

All lessons in this course

  1. Key Lifecycle: Generate, Store, Rotate, Destroy
  2. HSM Architecture & PKCS#11 Interface
  3. AWS KMS, GCP Cloud KMS & Azure Key Vault
  4. Key Escrow, Backup & Recovery Procedures
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