Zero-Migration Encryption: Building Drop-in Encrypted Field in Django

TALK: Zero-Migration Encryption: Building Drop-in Encrypted Field in Django by Vjeran Grozdanic

Django doesn't come with a solution to encrypt database data out-of-the-box. While community projects exist, they often require complex migration processes or double-writing to new columns. At Sentry, for our high-traffic distributed system, we needed a solution that would abstract encryption logic without worrying about encryption keys on a case-by-case basis or performing risky migrations on millions of existing entries. We built EncryptedFields, a custom Field base class that provides drop-in, no database migration, replacements for CharField, JSONField, and TextField. Our approach allows for a "hybrid" state: the field handles both old plain-text formats and the new encrypted format on-the-fly. This eliminated the need for complex data migrations or secondary columns, making the transition safe and seamless for our engineers.

More information: https://2026.djangocon.eu/speakers/SYTSVG/

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