chore: initialize monorepo with project scaffolding, configs, and CI setup

packages/py/aitbc-crypto/tests/test_receipt_signing.py

@@ -0,0 +1,45 @@
+import base64
+
+from nacl.signing import SigningKey
+
+from aitbc_crypto.receipt import canonical_json, receipt_hash
+from aitbc_crypto.signing import ReceiptSigner, ReceiptVerifier
+
+
+def test_canonical_json_orders_keys():
+    payload = {
+        "b": 2,
+        "a": 1,
+        "nested": {
+            "y": None,
+            "x": 5,
+        },
+    }
+    json_str = canonical_json(payload)
+    assert json_str == '{"a":1,"b":2,"nested":{"x":5}}'
+
+
+def test_receipt_sign_and_verify():
+    payload = {
+        "version": "1.0",
+        "receipt_id": "rcpt-1",
+        "job_id": "job-1",
+        "provider": "miner-1",
+        "client": "client-1",
+        "units": 1.0,
+        "unit_type": "gpu_seconds",
+        "started_at": 1695720000,
+        "completed_at": 1695720005,
+    }
+
+    signing_key = SigningKey.generate()
+    signer = ReceiptSigner(signing_key.encode())
+    signature = signer.sign(payload)
+
+    verifier = ReceiptVerifier(signing_key.verify_key.encode())
+    assert verifier.verify(payload, signature)
+
+    # tamper payload
+    tampered = payload.copy()
+    tampered["units"] = 2.0
+    assert verifier.verify(tampered, signature) is False