DATA ENCRYPTION GUIDE FOR SENSITIVE DATA | VIBEEVAL

Encryption Requires Proper Key Management

Encryption is only as secure as your key management. Hardcoded keys, keys stored in environment files, or keys accessible to developers completely undermine encryption. Always use dedicated key management services like AWS KMS, Google Cloud KMS, or HashiCorp Vault.

Data Encryption Implementation Checklist

Follow these 12 steps to properly encrypt sensitive data. Critical items address vulnerabilities that may be relevant to GDPR, HIPAA, and SOC2 frameworks.

Enable database encryption at rest

Use database-native encryption features or encrypted storage volumes. All major cloud databases support transparent encryption at rest.

Enforce TLS/SSL for all connections

Require encrypted connections between application and database, application and users, and between backend services. Reject unencrypted connections.

Encrypt sensitive fields at application level

Use field-level encryption for PII like SSN, credit cards, and health data. Database encryption at rest does not protect against SQL injection or admin access.

Use secure key management

Store encryption keys in AWS KMS, Google Cloud KMS, Azure Key Vault, or HashiCorp Vault. Never hardcode keys in code or store in environment files.

Implement key rotation

Rotate encryption keys periodically and when team members leave. Support decryption with old keys while encrypting new data with current keys.

Hash passwords with bcrypt or argon2

Never encrypt passwords, always hash them. Use bcrypt with cost 12+ or argon2id for password storage. Hashes are one-way and cannot be decrypted.

Use authenticated encryption (AES-GCM)

Prefer AES-256-GCM over AES-CBC for encryption. Authenticated encryption prevents tampering and provides integrity verification.

Implement secure random for IVs

Generate initialization vectors (IVs) using cryptographically secure random sources. Never reuse IVs with the same encryption key.

Encrypt backups and exports

Database backups, CSV exports, and data transfers must use the same encryption standards as production data.

Protect encryption keys at rest

Encryption keys themselves should be encrypted using key encryption keys (KEKs) in a key management service.

Implement secure key derivation

Derive encryption keys from passphrases using PBKDF2, bcrypt, or argon2 with high iteration counts, not simple hashing.

Document encryption decisions

Document which fields are encrypted, key rotation schedule, and decryption procedures for security reviews and incident response.

Common Encryption Vulnerabilities

Hardcoded Encryption Keys

Encryption keys stored in code, environment files committed to git, or configuration files, allowing attackers to decrypt all data

Weak Encryption Algorithms

Using DES, 3DES, RC4, or AES with ECB mode instead of modern authenticated encryption like AES-GCM

No Encryption in Transit

Unencrypted HTTP connections or database connections without TLS, exposing data to network interception

Encrypting Instead of Hashing Passwords

Storing encrypted passwords instead of hashing them, allowing decryption if encryption key is compromised

Related Resources

Database Security Best Practices

Universal database security principles

Authentication Implementation

Secure password hashing

Compliance Checklist

Security checklist for regulatory frameworks

API Security Guide

Encryption in transit

Audit Your Encryption Implementation

VibeEval automatically scans for weak encryption algorithms, hardcoded keys, unencrypted connections, and missing encryption on sensitive data fields.