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GitHub Repository
PII redaction that preserves data format, tokenized values stay usable in LLM pipelines
7 starsC
Hexlock – Replace PII in text with fake data that has the same format
by lemaudit·Apr 30, 2026·5 points·0 comments
AI Analysis
●●SolidSolve My ProblemShip It
Format-preserving PII replacement lets LLMs process data without seeing real values.
Strengths
- •Rehydrates original data in LLM responses using secure session keys.
- •Ephemeral mode allows quick testing without persistent key management overhead.
Weaknesses
- •Format preservation alone may not prevent all inference attacks on sensitive data.
- •Competes with mature enterprise DLP solutions already integrated into major LLM providers.
Category
Target Audience
Developers integrating LLMs with sensitive user data
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