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Article 9Article 32(1)(a)

Field-Level Encryption for Special Category Data

Encrypt specific database fields (medical records, biometrics, financial data) with per-field or per-user keys — beyond standard disk encryption.

€1,800–€3,600
EUR
40–80
hours
20–40
business days
Fixed scopeEU-nativeNDA pre-signed
💡Quick Answer

Implement field-level encryption for Article 9 special category data (health, biometrics, racial origin, etc.) using AES-256-GCM with per-field or per-user keys managed in AWS KMS or GCP Cloud KMS. Application-level encryption — data is encrypted before it reaches the database. Fixed price €1,800–3,600.

📋Why this service exists

Article 9 imposes stricter obligations on special categories of personal data (health, biometrics, racial origin, political opinions, religion). Field-level encryption goes beyond disk-level TDE — it encrypts individual fields in the application, so even a compromised database dump reveals only ciphertext for the most sensitive fields.

Article 9Article 32(1)(a)

What you get

  • Field-level encryption implemented for identified sensitive fields
  • Per-field or per-user key management in AWS KMS / GCP KMS
  • Application integration (library + usage guide)
  • Key rotation procedure
  • Performance benchmark report
  • Audit log of key access events

How we deliver

  1. Day 0
    You request quote → reply in 4 business hours
  2. Day 1–2
    Discovery call & scope clarification
  3. Day 3–5
    Contract signed, kickoff scheduled
  4. Day 5–7
    Implementation begins
  5. Day N
    Final deliverables + walkthrough call
  6. +30 days
    Free post-delivery support

Tools & technologies

AWS KMSGCP Cloud KMSlibsodiumAES-256-GCMPostgreSQL pgcrypto

Prerequisites

  • List of fields to encrypt (Article 9 data types)
  • Application code access (for integration)
  • AWS KMS or GCP Cloud KMS account

Pricing

Base scope€1,800–€3,600
Estimated hours40–80h
Hourly rate€45/h
Delivery time20–40 business days

✓ Within scope:

  • •Up to 20 sensitive database fields
  • •One primary application/service
  • •PostgreSQL, MySQL, or MongoDB

⚠ Outside scope (additional quote required):

  • •More than 20 fields (additional quote)
  • •Multiple separate applications
  • •Existing data migration / re-encryption of historical records (additional quote)

📋Final price confirmed in proposal within 4 hours of your request.

Realistic timeline — what to expect

  1. T+0hSubmit request
  2. T+4hInitial proposal (business hours)
  3. T+1–3dDiscovery call
  4. T+2–3dFinal invoice
  5. T+3–5dContract signed
  6. T+4–6dPayment received
  7. T+5–7dService kickoff
  8. T+5–7d+NService complete
This timeline reflects EU B2B best practices. We protect both parties from misunderstandings.

Frequently asked questions

How does field-level encryption affect database queries?
Encrypted fields cannot be used in WHERE clauses for exact matching (you can still search by other fields). We design the encryption scheme to minimize query impact — typically encrypting only fields that don't need server-side filtering.
What happens when we need to decrypt for authorized use?
Decryption happens in the application layer using the KMS key. We implement audit logging for every decryption event — who accessed which field, when, for what purpose.

Related services

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Design and implement a pseudonymization system that separates real identities from behavioral data — enabling GDPR Article 25 data minimization and reducing breach risk.

€2,700–5,400
🔐

Database Encryption at Rest

Implement transparent database encryption (TDE) with customer-managed keys (CMK) on AWS KMS or GCP Cloud KMS. Reduces Article 34 notification obligations in case of breach.

€1,100–1,800
🔐

Secrets Management Implementation (HashiCorp Vault)

Replace hardcoded credentials, .env files, and plaintext secrets with HashiCorp Vault or AWS Secrets Manager. Dynamic secrets, automatic rotation, full audit trail.

€1,800–3,600

Request a quote

You're requesting a quote for:

Field-Level Encryption for Special Category Data

Estimated: €1,800–3,600 · 20–40 business days

Initial proposal within 4 business hours, contract within 3 business days.

Where we'll send your proposal and invoice.

If you prefer to discuss by call.

🔒 Your data is encrypted in transit and at rest. Never shared with third parties.

⏱ Initial proposal within 4 business hours (EU hours, Mon–Fri 9:00–18:00 EET).

💼 Mutual NDA available on request before any sensitive discussion.