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Changelog — HARP

Changelog

Version history of the HARP specification suite.

v0.2 — Current draft

Section titled “v0.2 — Current draft”

HARP-CORE v0.2

Section titled “HARP-CORE v0.2”
  • Artifact canonical JSON format defined
  • SHA-256 hashing over signable form
  • Ed25519 decision signatures
  • Replay protection via nonce + expiry + cache
  • Fail-closed enforcement model

HARP-PROMPT v0.2

Section titled “HARP-PROMPT v0.2”
  • Prompt classification taxonomy
  • Prompt hash computation
  • Metadata tagging for prompt artifacts

HARP-SESSION v0.2

Section titled “HARP-SESSION v0.2”
  • Session lifecycle (create, snapshot, close)
  • Snapshot hashing
  • Session state management

HARP-TRANSPORT v0.2

Section titled “HARP-TRANSPORT v0.2”
  • Gateway message routing
  • E2E encryption (X25519 + AEAD)
  • Zero-knowledge relay design

HARP-KEYMGMT v0.2

Section titled “HARP-KEYMGMT v0.2”
  • Key generation and device binding
  • Key rotation recommendations
  • Hardware-backed storage guidance

HARP-THREATMODEL v0.2

Section titled “HARP-THREATMODEL v0.2”
  • Threat analysis for all protocol components
  • Mitigation requirements
  • Out-of-scope threats documented

HARP-GOVERNANCE v0.2

Section titled “HARP-GOVERNANCE v0.2”
  • Specification governance process
  • Versioning and extension rules

HARP-COMPLIANCE v0.2

Section titled “HARP-COMPLIANCE v0.2”
  • Conformance levels defined
  • Test vector requirements

HARP-RECIPIENT-WRAP / HARP-APPROVAL-SET v0.2 Draft

Section titled “HARP-RECIPIENT-WRAP / HARP-APPROVAL-SET v0.2 Draft”
  • Per-device DEK wrap (aes-256-gcm+hpke-x25519-v1); gateway never holds the DEK
  • Frozen ApprovalSet snapshot; firstValid and count wait
  • GET /v1/recipient-keys public directory; key-directory substitution documented in THREATMODEL
  • 1:1 AES-256-GCM / pairing profile unchanged