feat(validate): implement cryptographic provenance validation (HMAC, …#14
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aryanyk wants to merge 1 commit intoc2siorg:mainfrom
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feat(validate): implement cryptographic provenance validation (HMAC, …#14aryanyk wants to merge 1 commit intoc2siorg:mainfrom
aryanyk wants to merge 1 commit intoc2siorg:mainfrom
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…nonce, expiry, execution binding) - Added HMAC verification helpers - Implemented nonce replay protection with TTL - Enforced execution_id binding and expiry validation - Short-circuit BLOCK on validation failure - Emitted provenance_trust and provenance_flags in RiskContext - Scoped strictly to validate stage
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This PR implements cryptographic provenance validation strictly within the Validate stage of the pipeline.
Issue : #13
Scope:
Features:
Out of Scope:
This aligns with pipeline boundaries defined in architecture.md and keeps provenance as a deterministic signal for downstream stages.