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“Your database backup just leaked. Is your data still safe?”
Learn how to encrypt and decrypt sensitive database fields in Spring Boot using JPA converters and AES/GCM encryption. Includes secure key management and best practices.
That’s the question that separates a secure app from a vulnerable one.
Even if your database is protected behind firewalls and access control, unencrypted columns (like user emails, SSNs, or payment data) are an easy target if a breach occurs.
Let’s fix that — and learn how to encrypt & decrypt database fields automatically in Spring Boot using JPA AttributeConverters and AES encryption.
🧠 Why Field-Level Encryption?
Unlike full-database encryption (like TDE), field-level encryption gives you fine-grained control:
✅ You choose which fields to encrypt
✅ Encrypted data is unreadable even in SQL logs
✅ Works across databases (MySQL, PostgreSQL, etc.)
✅ Transparent to your JPA entities