The Problem Nobody Talks About
GDPR and HIPAA require data to stay encrypted.
The EU AI Act (Article 13) requires AI systems to explain their decisions.
These two rules are on a collision course.
A credit bureau cannot decrypt applicant data to compute an explanation — but regulators say it must provide one.
What CipherExplain Does
CipherExplain computes SHAP feature attributions entirely under Fully Homomorphic Encryption (FHE). The server never sees plaintext. The client gets a complete explanation of which features drove the prediction — all on encrypted data.
| Metric | Value |
|---|---|
| SHAP accuracy MAE vs KernelSHAP | 0.009 |
| Efficiency axiom error | 0.0 (machine epsilon) |
| Coalition compression (d=50) | 2^50 → 390 evaluations |
| CKKS latency (d=50, M1) | ~10s end-to-end |
Why it matters
- Explanations stay private
- Still fully interpretable by authorized users
- Ideal for healthcare, finance, and security use cases
Get started
👉 GitHub: https://github.com/VaultBytes/CipherExplain
📦 PyPI: pip install cipherexplain
Licensed AGPL-3.0. Patent-pending: PCT/IB2026/053378, PCT/IB2026/053405.
Patent licensing: b@vaultbytes.com
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