feat(signing): Mode 2 Ed25519 manifest signer (optional extra) - #269
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Demiladepy wants to merge 1 commit into
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feat(signing): Mode 2 Ed25519 manifest signer (optional extra)#269Demiladepy wants to merge 1 commit into
Demiladepy wants to merge 1 commit into
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Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
Implements Trust Mode 2 — authenticated integrity from
docs/features/trust-modes.md.Mode 1 proves an asset's bytes are intact; it doesn't prove who produced it. This PR adds optional Ed25519 manifest signing to
genblaze_core.signing, so a pipeline can prove a manifest was produced by a trusted key. It complements v0.6.0'sverify --fetch(bytes unchanged) with an authorship guarantee — together they close the full provenance chain that EU AI Act Article 50 transparency calls for.Shipped behind an optional
[signing]extra, so core stays dependency-light and existing behavior is unchanged.Changes
libs/core/genblaze_core/signing/base.py—SignatureBundle+ verification interfacelibs/core/genblaze_core/signing/ed25519.py—Ed25519Signer, canonical-JSON signing,verify_signature_bundlelibs/core/genblaze_core/signing/__init__.py— lazy exportslibs/core/genblaze_core/__init__.py— surface the signing modulelibs/core/pyproject.toml— optional[signing]extra (cryptography)libs/core/tests/unit/test_ed25519_signing.py— sign/verify + tamper-detection testsdocs/features/trust-modes.md— document Mode 2Test plan
make testpasses (unit tests for sign/verify + tamper detection added)make lintpassestrust-modes.mddescribes Mode 2Related
Reference consumer: ATTEST, an EU AI Act Article 50 compliance gateway built on Genblaze + Backblaze B2 (Backblaze Generative Media Hackathon). Signs every generated asset's manifest with Ed25519 and exposes a public verifier.