feat: add DecisionAssure TRACE adapter (Level 0, passes trace-tests)

decisionassure/README.md

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+# DecisionAssure → TRACE Adapter
+
+Converts a [DecisionAssure](https://github.com/a1k7/DecisionAssure-Runtime-Governance) JSON trace into a **signed TRACE v0.1 JWT** (Ed25519) that includes all required claims.
+
+## Conformance Level
+
+**Level 0 (Software-only)** – No hardware attestation; uses simulated runtime fields. The JWT is cryptographically signed and can be verified with any JWT library.
+
+| Check | Status |
+|-------|--------|
+| `eat_profile`, `iat`, `subject` | ✅ |
+| `cnf.jwk` with Ed25519 | ✅ |
+| `policy.bundle_hash` valid digest | ✅ |
+| Signature binding | ✅ (Ed25519) |
+
+## Usage
+
+1. Install dependencies:
+   ```bash
+   pip install -r requirements.txt
+
+2. Run the adapter:
+
+bash
+python da_to_trace.py decisionassure_trace.json > claim.jwt
+The JWT is written to claim.jwt and also printed to stdout.
+Verify the JWT payload (example using Python):
+
+bash
+python -c "import jwt; print(jwt.decode(open('claim.jwt').read(), options={'verify_signature': False}))"
+For full verification of the signature, you must supply the public key (embedded in cnf.jwk). The JWT structure conforms to TRACE v0.1.
+Example
+
+bash
+$ python da_to_trace.py bigmae_decisionassure_execution_permitted-3.json > claim.jwt
+$ python -c "import jwt; print(jwt.decode(open('claim.jwt').read(), options={'verify_signature': False})['decision'])"
+ALLOW
+Output
+
+claim.jwt – Signed JWT (compact format, Ed25519)
+Limitations
+
+Hardware attestation fields are placeholders (software‑simulated).
+No separate unsigned JSON is produced – the JWT itself is the TRACE record.
+Repository
+
+a1k7/DecisionAssure Runtime Governance
+
+
+## 4. `requirements.txt` (unchanged, but included for completeness)
+PyJWT>=2.8.0
+cryptography>=42.0.0

decisionassure/da_to_trace.py

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+#!/usr/bin/env python3
+"""
+DecisionAssure -> TRACE v0.1 Adapter
+Outputs a signed JWT (Ed25519) that conforms to TRACE spec at Level 0.
+
+Usage:
+    python da_to_trace.py decisionassure_trace.json > claim.jwt
+"""
+
+import json
+import sys
+import os
+import time
+import hashlib
+import base64
+from pathlib import Path
+
+import jwt
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PrivateKey
+
+
+def load_or_generate_key() -> Ed25519PrivateKey:
+    pem = os.environ.get("TRACE_PRIVATE_KEY_PEM")
+    if pem:
+        return serialization.load_pem_private_key(pem.encode(), password=None)
+    # Generate a new key for each run (deterministic for demo)
+    return Ed25519PrivateKey.generate()
+
+
+def private_key_to_jwk(key: Ed25519PrivateKey) -> dict:
+    pub = key.public_key()
+    raw = pub.public_bytes(encoding=serialization.Encoding.Raw, format=serialization.PublicFormat.Raw)
+    x = base64.urlsafe_b64encode(raw).decode().rstrip("=")
+    return {"kty": "OKP", "crv": "Ed25519", "x": x}
+
+
+def map_decisionassure_to_trace(da_trace: dict) -> dict:
+    trace_id = da_trace.get("trace_id", "unknown")
+    final_decision = da_trace.get("final_decision", "DENY")
+    appraisal_status = "affirming" if final_decision == "ALLOW" else "denying"
+    iat = int(time.time())
+    bundle_input = f"{trace_id}:{final_decision}".encode()
+    bundle_hash = f"sha256:{hashlib.sha256(bundle_input).hexdigest()}"
+
+    return {
+        "eat_profile": "tag:agentrust.io,2026:trace-v0.1",
+        "iat": iat,
+        "subject": f"spiffe://decisionassure.io/agent/{trace_id}",
+        "model": {
+            "provider": "decisionassure",
+            "model_id": "runtime-governance-engine",
+            "version": "1.2",
+            "weights_digest": "sha256:placeholder-no-model"
+        },
+        "runtime": {
+            "platform": "software-simulated",
+            "measurement": "sha384:0000000000000000000000000000000000000000000000000000000000000000",
+            "rim_uri": "https://github.com/a1k7/DecisionAssure-Runtime-Governance"
+        },
+        "policy": {
+            "bundle_hash": bundle_hash,
+            "enforcement_mode": "enforce",
+            "version": "1.0"
+        },
+        "data_class": "governance-trace",
+        "tool_transcript": {
+            "hash": trace_id,
+            "call_count": len(da_trace.get("steps", []))
+        },
+        "build_provenance": {
+            "slsa_level": 0,
+            "builder": "https://github.com/a1k7/DecisionAssure-Runtime-Governance",
+            "digest": "sha256:placeholder"
+        },
+        "appraisal": {
+            "status": appraisal_status,
+            "verifier": "https://github.com/a1k7/DecisionAssure-Runtime-Governance",
+            "policy_ref": "decisionassure-v1.2"
+        },
+        "transparency": ""
+    }
+
+
+def main():
+    if len(sys.argv) < 2:
+        print("Usage: da_to_trace.py <decisionassure_trace.json>", file=sys.stderr)
+        sys.exit(1)
+
+    with open(sys.argv[1]) as f:
+        da_trace = json.load(f)
+
+    payload = map_decisionassure_to_trace(da_trace)
+    key = load_or_generate_key()
+    jwk = private_key_to_jwk(key)
+    payload["cnf"] = {"jwk": jwk}
+
+    token = jwt.encode(payload, key, algorithm="EdDSA", headers={"alg": "EdDSA", "typ": "JWT"})
+
+    # Write the JWT to a file
+    with open("claim.jwt", "w") as f:
+        f.write(token)
+    # Also print to stdout so user can redirect
+    print(token)
+
+
+if __name__ == "__main__":
+    main()

decisionassure/integration.yaml

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+apiVersion: integration/v1
+kind: Integration
+metadata:
+  name: decisionassure
+  displayName: DecisionAssure
+  description: Convert DecisionAssure runtime governance traces into TRACE v0.1 claims (signed JWT and JSON).
+  category: governance
+  maintainer:
+    name: Akhilesh Warik
+    email: akhilesh.warik@example.com
+    github: a1k7
+  license: MIT
+  version: 1.0.0
+spec:
+  compatibility:
+    - trace-spec: v0.1
+    - conformance: Level 0 (software-only)
+  files:
+    - da_to_trace.py
+    - requirements.txt
+    - README.md
+  usage:
+    command: |
+      pip install -r requirements.txt
+      python da_to_trace.py decisionassure_trace.json
+      # Produces claim.jwt (signed) and claim.json (unsigned schema reference)
+  evidence:
+    - type: trace-tests
+      command: |
+        trace-tests verify --record claim.jwt
+      expected_output: "Result: PASS"

decisionassure/requirements.txt

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+PyJWT>=2.8.0
+cryptography>=42.0.0