Gartner Research

Decision Point for Encryption

Published: 03 February 2015

ID: G00262241

Analyst(s): Erik Heidt

Summary

This Decision Point helps evaluate the points and layers at which organizations can use encryption to achieve information confidentiality objectives. General decisions involve data at rest and in motion; specific decisions involve storage, applications and databases, endpoints, and communications.

Table Of Contents

Decision Point

Decision Context

  • Architectural Context
  • Related Decisions

Evaluation Criteria

  • Requirements and Constraints
  • Principles

Alternatives

  • General Encryption Approaches
    • Encrypt an Entire Class of Assets or Data Elements
    • Encrypt Only Specific Assets or Data Elements
  • General Data-at-Rest Encryption
    • Infrastructure-Level Encryption
    • Application-Level Encryption
    • Application-Level Persistent Data Encryption
  • Data-at-Rest Encryption for Data Center Backup Storage
    • Self-Encrypting Drive or Array/Library Encryption
    • Fabric-Based Encryption
    • Backup Software Encryption
    • Primary Storage Encryption
  • Data-at-Rest Encryption for Data Center Storage
    • Self-Encrypting Drive or SAN/NAS Encryption
    • Host Storage Controller or Fabric-Based Encryption
    • Software Disk Encryption
    • General File Encryption
    • Application-Specific File Encryption
  • Data-at-Rest Encryption for Applications and Databases
    • Storage Encryption
    • Transparent Database Encryption
    • Database Encryption
    • Application-Level Encryption
  • Data-at-Rest Encryption for Endpoints and User-Removable Media
    • Self-Encrypting Media
    • Software Media Encryption
    • Transparent File Encryption
    • Interactive File Encryption
    • Application Encryption
  • General Data-in-Motion Encryption
    • Point-to-Point or Link Encryption
    • Perimeter-to-Perimeter Encryption
    • Perimeter-to-End Encryption
    • End-to-End Encryption
    • Network- or Infrastructure-Level Encryption
    • Transport- or Application-Level Encryption
    • Message- or Data-Level Encryption
  • Data-in-Motion Encryption for Email and Communications
    • Network Encryption
    • Messaging Transport Encryption
    • Gateway With Encrypted Storage and Retrieval
    • Gateway With Message Encryption
    • End-to-End Transport Encryption
    • End-to-End Message Encryption
  • Cloud and Other Service Provider Considerations

Future Developments

  • Encryption Architecture
  • Encryption Key Management
  • Encryption for Virtualization and the Cloud
  • Entrusting Key Management to Third Parties

Decision Tool

  • Evaluate Protective Mechanisms
  • Evaluate Use Cases
  • Evaluate Encryption Scope
  • Identify Solutions and Conflicts
  • Evaluate Data-at-Rest Encryption Alternatives
    • General Data-at-Rest Encryption
    • Application and Database Encryption
    • Data Center Storage Encryption
    • Data Center Backup Storage Encryption
    • User Endpoint and Removable User Media Encryption
  • Evaluate Data-in-Motion Encryption Alternatives
    • General Data-in-Motion Encryption
    • Messaging and Communication Encryption
  • Evaluate Compensating Controls
  • An Example of How to Use This Tool
    • Evaluate Use Cases
    • Evaluate Encryption Scope
    • Evaluate Alternatives, and Identify Conflicts

Decision Justification

  • Data at Rest
  • Data in Motion
  • Compensating Controls

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