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Per-instance encryption domain separation; demote deployment single-key #31

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opened 2026-07-25 17:44:04 +00:00 by Cordy · 0 comments
Cordy commented 2026-07-25 17:44:04 +00:00
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Manuel dislikes the one-key-per-instance model (blast radius too large). Our deployment custody mode is exactly that.

  • Demote deployment custody to dev/fallback only (default stays keycloak-profile per-user).
  • Add a per-instance seed/nonce so identical plaintext never produces identical ciphertext across instances (domain separation).

Small change; closes the blast-radius objection to the fallback mode.

Manuel dislikes the one-key-per-instance model (blast radius too large). Our `deployment` custody mode is exactly that. - Demote `deployment` custody to **dev/fallback only** (default stays `keycloak-profile` per-user). - Add a **per-instance seed/nonce** so identical plaintext never produces identical ciphertext across instances (domain separation). Small change; closes the blast-radius objection to the fallback mode.
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Reference: Cordy/Cairn#31
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