Question

Difficulty: MediumData Protection and Storage Security Architecture

Match each storage security technology on the left with its corresponding enterprise functional mechanism on the right.

  • Envelope Encryption ArchitectureEncrypts plaintext data using a local Data Encryption Key (DEK) wrapped by a Key Encryption Key (KEK).
  • SAN LUN MaskingRestricts logical storage volume access to specific host HBA WWNs at the storage array controller level.
  • Database Field TokenizationReplaces sensitive data fields with non-sensitive surrogate tokens mapped inside an isolated secure vault.
  • Self-Encrypting Drive (SED)Provides transparent hardware-level full disk encryption with native cryptographic erase capabilities.

Answer

Envelope Encryption Architecture pairs with DEK/KEK key hierarchy; SAN LUN Masking pairs with host HBA WWN array restriction; Database Field Tokenization pairs with vault-mapped surrogate replacement; Self-Encrypting Drive (SED) pairs with hardware disk encryption and cryptographic erase.
Each storage security architecture component directly addresses a distinct operational requirement across key management, storage network isolation, application data transformation, and physical drive security: Envelope Encryption manages hierarchical DEK/KEK keys; SAN LUN Masking restricts host access by WWN at the storage controller; Tokenization replaces sensitive fields with vault-mapped surrogates; and SEDs provide hardware media encryption.

Step-by-Step Solution

1
Analyze storage encryption key management structures.
Identify envelope encryption as the pattern utilizing Data Encryption Keys (DEKs) wrapped by Key Encryption Keys (KEKs).
This decouples local file encryption performance from centralized key access control.
2
Evaluate Storage Area Network (SAN) logical separation controls.
Associate LUN masking with storage array controller ACLs filtering by host HBA World Wide Names (WWNs).
LUN masking prevents unauthorized host servers from detecting or attaching to SAN volumes.
3
Differentiate data obfuscation methods for structured databases.
Map tokenization to vault-backed surrogate replacement.
Tokenization replaces original data with non-secret lookup identifiers rather than mathematical ciphertexts.
4
Identify physical block storage media protection mechanisms.
Match Self-Encrypting Drives (SEDs) to hardware-level disk encryption and crypto-erase.
SEDs implement cryptographic processing directly on the storage device controller.

Key Concept

Data Protection and Storage Security Architecture Controls
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