via “pii-masking-with-context-preservation”
A zero-trust SDK for anonymizing PII locally before sending prompts to LLMs and seamlessly rehydrating the response.
Unique: Implements multiple masking strategies (full replacement, partial masking, format-preserving encryption) that enable fine-grained control over privacy/utility tradeoffs, allowing users to preserve just enough context for the LLM to be useful while protecting sensitive data. Provides metadata about which properties were preserved, enabling informed decisions about privacy risks.
vs others: Unlike simple token replacement that loses all context, rehydra's context-preserving masking enables the LLM to understand data types and relationships while hiding actual values. Format-preserving encryption provides stronger privacy guarantees than partial masking while maintaining more utility than full anonymization.