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Field-Level Encryption Patterns

Master production-ready field-level encryption that protects sensitive data while preserving analytics value.

The Problem​

Data streams contain sensitive information requiring encryption:

  • Credit card numbers, CVV codes (PCI-DSS violations)
  • SSN, email, phone numbers (GDPR/CCPA violations)
  • Billing addresses (location privacy)
  • Naive encryption destroys analytics value

The Solution​

Learn 6 field encryption patterns:

  1. Payment Card Encryption - AES-256-GCM with last-4 preservation for PCI-DSS compliance
  2. PII Data Encryption - Multi-field encryption with domain/area code preservation
  3. Address Encryption - Street-level encryption with city/state/zip prefix preservation
  4. Date Encryption - Sensitive date encryption with year/age ranges preserved
  5. Multi-Key Strategy - Separate keys by data type and rotation frequency for breach containment
  6. Key Rotation & Audit - Versioned keys with comprehensive audit trails for zero-downtime rotation

Get Started​

Choose your path:

Interactive Explorer​

See each encryption pattern with side-by-side before/after views

Step-by-Step Tutorial​

Build the pipeline incrementally:

  1. Payment Encryption
  2. PII Encryption
  3. Address Encryption
  4. Date Encryption
  5. Multi-Key Security
  6. Production Operations

Complete Pipeline​

Download the production-ready solution