feat(clearsign): KeepKey as the schema attestor - #353
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Adds messages 1700-1703 so a KeepKey can issue the schema signatures the clear-sign path verifies, instead of every schema having to come from an offline signing ceremony. - ClearsignAttestorGetPublicKey exports the attestor key; ClearsignAttestorSign signs a schema after showing the user what they are attesting to — program identity, discriminator, and each argument label with its type and width. - Self-service attestation is gated behind advanced mode, so a default device cannot be talked into minting trust for an attacker's schema. - The signed variant ships the built-in anchor table, so schemas issued this way verify on a stock device with nothing loaded. - scripts/emulator/capture-clearsign-attestor.py reproduces the OLED sequence, and docs/security/evidence/7.15.0-rc21-clearsign-attestor holds the captured frames including the 44-character program id and 16-character label bounds.
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Superseded by the smaller audit-ready 7.15 stack: #359 release foundation, #360 authenticated clear-signing, #361 recovery and entropy, #362 Zcash Orchard, #363 chain integrations, and #364 Bitcoin/release security. All release changes remain preserved in the replacement branches and preservation tags. The replacement aggregate was tree-verified against the prior release and passed the local CI-equivalent container suite (405 firmware, 2 board, 18 crypto, and 7 Pallas constant-time tests). GitHub-hosted checks have been explicitly dispatched and are currently queued. |
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7.15 review stack position 12/17.
This PR is intentionally one coherent commit, based on
feature/715-11-clearsign-evm, for individual auditing.The full stack is linear from the clean fork
developat 1af2ffe.Review scope: feat(clearsign): KeepKey as the schema attestor.
The preserved pre-restage candidate remains available at
preserve/alpha-2026-08-05.