test_msign_dual_sig.py
python
sha256:b636f72dcba9e190afb980bece906fa5b717fbde014b76ef023df8cb96e01eb9
docs: expand cache plan with all seven testing tiers and do…
Sonnet 4.6
131 days ago
| 1 | """Tests for extended MPay dual-signature (Ed25519 + secp256k1 / AVAX). |
| 2 | |
| 3 | Verifies that :func:`build_payment_claim` correctly: |
| 4 | |
| 5 | 1. Produces required Ed25519 MSign signature in all cases (backward compat). |
| 6 | 2. Produces ``payer_avax_address``, ``eth_sig`` when ``avax_private_key`` is set. |
| 7 | 3. Produces ``recipient_avax_address`` when that argument is passed. |
| 8 | 4. Leaves AVAX fields absent when no secp256k1 key is supplied. |
| 9 | 5. ``eth_sig`` is a valid EIP-191 signature verifiable with ``eip191_verify``. |
| 10 | 6. ``PaymentClaim`` TypedDict shape is correct (required + optional fields). |
| 11 | 7. Dual-signed claims are deterministic for the same inputs (given fixed ``ts``). |
| 12 | 8. Large payloads and extreme argument values don't break signing. |
| 13 | |
| 14 | Test categories |
| 15 | --------------- |
| 16 | - unit : PaymentClaim field structure |
| 17 | - integration : dual-sig claim round-trip (Ed25519 + secp256k1) |
| 18 | - e2e : verify eth_sig with eip191_verify against derived address |
| 19 | - stress : 50 consecutive dual-sig claims |
| 20 | - data-integrity : canonical message matches both Ed25519 and EIP-191 signer |
| 21 | - performance : dual-sig claim under 200 ms per claim |
| 22 | - security : AVAX fields absent when no key supplied; no key leakage |
| 23 | - docstrings : public API has docstrings |
| 24 | """ |
| 25 | |
| 26 | from __future__ import annotations |
| 27 | |
| 28 | import base64 |
| 29 | import hashlib |
| 30 | import time |
| 31 | from unittest.mock import MagicMock |
| 32 | |
| 33 | import pytest |
| 34 | |
| 35 | |
| 36 | # --------------------------------------------------------------------------- |
| 37 | # Shared fixtures |
| 38 | # --------------------------------------------------------------------------- |
| 39 | |
| 40 | BIP39_MNEMONIC = ( |
| 41 | "abandon abandon abandon abandon abandon abandon " |
| 42 | "abandon abandon abandon abandon abandon about" |
| 43 | ) |
| 44 | |
| 45 | |
| 46 | @pytest.fixture(scope="module") |
| 47 | def seed(): |
| 48 | from muse.core.bip39 import mnemonic_to_seed |
| 49 | return mnemonic_to_seed(BIP39_MNEMONIC) |
| 50 | |
| 51 | |
| 52 | @pytest.fixture(scope="module") |
| 53 | def avax_key(seed): |
| 54 | from muse.core.secp256k1_sign import derive_avax_key |
| 55 | return derive_avax_key(seed) |
| 56 | |
| 57 | |
| 58 | @pytest.fixture(scope="module") |
| 59 | def ed25519_signing(seed): |
| 60 | """A minimal SigningIdentity-compatible object with a real Ed25519 key.""" |
| 61 | from muse.core.hdkeys import derive_identity_key, dk_to_ed25519 |
| 62 | dk = derive_identity_key(seed) |
| 63 | private_key = dk_to_ed25519(dk) |
| 64 | |
| 65 | signing = MagicMock() |
| 66 | signing.private_key = private_key |
| 67 | signing.handle = "gabriel" |
| 68 | return signing |
| 69 | |
| 70 | |
| 71 | @pytest.fixture(scope="module") |
| 72 | def avax_address(avax_key): |
| 73 | from muse.core.secp256k1_sign import avax_c_chain_address |
| 74 | return avax_c_chain_address(avax_key.public_key) |
| 75 | |
| 76 | |
| 77 | # --------------------------------------------------------------------------- |
| 78 | # Unit: PaymentClaim TypedDict shape |
| 79 | # --------------------------------------------------------------------------- |
| 80 | |
| 81 | |
| 82 | class TestPaymentClaimShape: |
| 83 | """PaymentClaim TypedDict structure — required and optional fields.""" |
| 84 | |
| 85 | def test_required_fields_present_without_avax(self, ed25519_signing): |
| 86 | """Required fields are always present even without AVAX key.""" |
| 87 | from muse.core.msign import build_payment_claim |
| 88 | |
| 89 | claim = build_payment_claim( |
| 90 | ed25519_signing, "gabriel", "alice", |
| 91 | 1_000_000, "nanoMUSE", "a" * 64, "test memo", ts=1_700_000_000, |
| 92 | ) |
| 93 | assert claim["from_handle"] == "gabriel" |
| 94 | assert claim["to_handle"] == "alice" |
| 95 | assert claim["amount_nano"] == 1_000_000 |
| 96 | assert claim["currency"] == "nanoMUSE" |
| 97 | assert claim["nonce_hex"] == "a" * 64 |
| 98 | assert claim["memo"] == "test memo" |
| 99 | assert claim["ts"] == 1_700_000_000 |
| 100 | assert "signature_b64" in claim |
| 101 | assert "canonical_message" in claim |
| 102 | |
| 103 | def test_avax_fields_absent_without_key(self, ed25519_signing): |
| 104 | """AVAX fields must be absent when ``avax_private_key`` is not supplied.""" |
| 105 | from muse.core.msign import build_payment_claim |
| 106 | |
| 107 | claim = build_payment_claim( |
| 108 | ed25519_signing, "gabriel", "alice", |
| 109 | 1_000_000, "nanoMUSE", "a" * 64, "memo", ts=1, |
| 110 | ) |
| 111 | assert "payer_avax_address" not in claim |
| 112 | assert "eth_sig" not in claim |
| 113 | assert "recipient_avax_address" not in claim |
| 114 | |
| 115 | def test_avax_fields_present_with_key(self, ed25519_signing, avax_key): |
| 116 | """AVAX fields appear when ``avax_private_key`` is supplied.""" |
| 117 | from muse.core.msign import build_payment_claim |
| 118 | |
| 119 | claim = build_payment_claim( |
| 120 | ed25519_signing, "gabriel", "alice", |
| 121 | 1_000_000, "nanoMUSE", "b" * 64, "memo", ts=1, |
| 122 | avax_private_key=avax_key, |
| 123 | ) |
| 124 | assert "payer_avax_address" in claim |
| 125 | assert "eth_sig" in claim |
| 126 | assert "recipient_avax_address" not in claim |
| 127 | |
| 128 | def test_recipient_avax_address_stored(self, ed25519_signing, avax_key): |
| 129 | """``recipient_avax_address`` is stored verbatim when provided.""" |
| 130 | from muse.core.msign import build_payment_claim |
| 131 | |
| 132 | recipient = "0x742d35Cc6634C0532925a3b844Bc454e4438f44e" |
| 133 | claim = build_payment_claim( |
| 134 | ed25519_signing, "gabriel", "alice", |
| 135 | 500, "nanoMUSE", "c" * 64, "memo", ts=2, |
| 136 | avax_private_key=avax_key, |
| 137 | recipient_avax_address=recipient, |
| 138 | ) |
| 139 | assert claim["recipient_avax_address"] == recipient |
| 140 | |
| 141 | def test_recipient_without_payer_key(self, ed25519_signing): |
| 142 | """``recipient_avax_address`` can be stored without a secp256k1 key.""" |
| 143 | from muse.core.msign import build_payment_claim |
| 144 | |
| 145 | recipient = "0xDeAD000000000000000042069420694206942069" |
| 146 | claim = build_payment_claim( |
| 147 | ed25519_signing, "gabriel", "alice", |
| 148 | 100, "nanoMUSE", "d" * 64, "memo", ts=3, |
| 149 | recipient_avax_address=recipient, |
| 150 | ) |
| 151 | assert claim["recipient_avax_address"] == recipient |
| 152 | assert "payer_avax_address" not in claim |
| 153 | assert "eth_sig" not in claim |
| 154 | |
| 155 | |
| 156 | # --------------------------------------------------------------------------- |
| 157 | # Integration: dual-sig claim round-trip |
| 158 | # --------------------------------------------------------------------------- |
| 159 | |
| 160 | |
| 161 | class TestDualSigRoundTrip: |
| 162 | """Ed25519 + secp256k1 dual-signature integration tests.""" |
| 163 | |
| 164 | def test_payer_address_matches_derived(self, ed25519_signing, avax_key, avax_address): |
| 165 | """``payer_avax_address`` must equal the derived AVAX C-Chain address.""" |
| 166 | from muse.core.msign import build_payment_claim |
| 167 | |
| 168 | claim = build_payment_claim( |
| 169 | ed25519_signing, "gabriel", "alice", |
| 170 | 1_000, "nanoMUSE", "e" * 64, "memo", ts=10, |
| 171 | avax_private_key=avax_key, |
| 172 | ) |
| 173 | assert claim["payer_avax_address"] == avax_address |
| 174 | |
| 175 | def test_eth_sig_is_65_bytes_hex(self, ed25519_signing, avax_key): |
| 176 | """``eth_sig`` is a 130-char hex string encoding 65 bytes.""" |
| 177 | from muse.core.msign import build_payment_claim |
| 178 | |
| 179 | claim = build_payment_claim( |
| 180 | ed25519_signing, "gabriel", "alice", |
| 181 | 1_000, "nanoMUSE", "f" * 64, "memo", ts=11, |
| 182 | avax_private_key=avax_key, |
| 183 | ) |
| 184 | eth_sig_hex = claim["eth_sig"] |
| 185 | assert len(eth_sig_hex) == 130, "65 bytes → 130 hex chars" |
| 186 | sig_bytes = bytes.fromhex(eth_sig_hex) |
| 187 | assert len(sig_bytes) == 65 |
| 188 | # v must be 27 or 28 (legacy Ethereum recovery ID) |
| 189 | assert sig_bytes[64] in (27, 28) |
| 190 | |
| 191 | def test_ed25519_sig_still_valid(self, ed25519_signing, avax_key): |
| 192 | """Ed25519 ``signature_b64`` must remain valid even with AVAX key.""" |
| 193 | from muse.core.msign import build_payment_claim |
| 194 | |
| 195 | claim = build_payment_claim( |
| 196 | ed25519_signing, "gabriel", "alice", |
| 197 | 999, "nanoMUSE", "aa" * 32, "memo", ts=12, |
| 198 | avax_private_key=avax_key, |
| 199 | ) |
| 200 | # Verify the Ed25519 signature manually |
| 201 | import base64 |
| 202 | from cryptography.hazmat.primitives.asymmetric.ed25519 import Ed25519PublicKey |
| 203 | pub = ed25519_signing.private_key.public_key() |
| 204 | sig_b64 = claim["signature_b64"] |
| 205 | pad = (4 - len(sig_b64) % 4) % 4 |
| 206 | sig_bytes = base64.urlsafe_b64decode(sig_b64 + "=" * pad) |
| 207 | canonical_bytes = claim["canonical_message"].encode() |
| 208 | # Should not raise |
| 209 | pub.verify(sig_bytes, canonical_bytes) |
| 210 | |
| 211 | def test_deterministic_given_fixed_ts(self, ed25519_signing, avax_key): |
| 212 | """Two identical calls with the same ``ts`` must produce identical claims.""" |
| 213 | from muse.core.msign import build_payment_claim |
| 214 | |
| 215 | kwargs = dict( |
| 216 | avax_private_key=avax_key, ts=42, |
| 217 | ) |
| 218 | c1 = build_payment_claim(ed25519_signing, "gabriel", "alice", |
| 219 | 7, "nanoMUSE", "00" * 32, "m", **kwargs) |
| 220 | c2 = build_payment_claim(ed25519_signing, "gabriel", "alice", |
| 221 | 7, "nanoMUSE", "00" * 32, "m", **kwargs) |
| 222 | assert c1["signature_b64"] == c2["signature_b64"] |
| 223 | assert c1["eth_sig"] == c2["eth_sig"] |
| 224 | assert c1["payer_avax_address"] == c2["payer_avax_address"] |
| 225 | |
| 226 | |
| 227 | # --------------------------------------------------------------------------- |
| 228 | # E2E: verify eth_sig with eip191_verify |
| 229 | # --------------------------------------------------------------------------- |
| 230 | |
| 231 | |
| 232 | class TestEip191Verification: |
| 233 | """Verify the dual-sig eth_sig using eip191_verify.""" |
| 234 | |
| 235 | def test_eip191_verify_accepts_eth_sig(self, ed25519_signing, avax_key, avax_address): |
| 236 | """``eip191_verify`` must accept the ``eth_sig`` for the canonical message.""" |
| 237 | from muse.core.msign import build_payment_claim |
| 238 | from muse.core.secp256k1_sign import eip191_verify |
| 239 | |
| 240 | claim = build_payment_claim( |
| 241 | ed25519_signing, "gabriel", "alice", |
| 242 | 5_000, "nanoMUSE", "bb" * 32, "verify test", ts=100, |
| 243 | avax_private_key=avax_key, |
| 244 | ) |
| 245 | canonical_bytes = claim["canonical_message"].encode() |
| 246 | sig_bytes = bytes.fromhex(claim["eth_sig"]) |
| 247 | assert eip191_verify(sig_bytes, canonical_bytes, avax_address) |
| 248 | |
| 249 | def test_eip191_verify_rejects_wrong_address(self, ed25519_signing, avax_key, seed): |
| 250 | """Verification must fail for a different address.""" |
| 251 | from muse.core.msign import build_payment_claim |
| 252 | from muse.core.secp256k1_sign import avax_c_chain_address, derive_avax_key, eip191_verify |
| 253 | |
| 254 | claim = build_payment_claim( |
| 255 | ed25519_signing, "gabriel", "alice", |
| 256 | 1, "nanoMUSE", "cc" * 32, "memo", ts=200, |
| 257 | avax_private_key=avax_key, |
| 258 | ) |
| 259 | # Derive a different key (account=1) to get a different address |
| 260 | other_key = derive_avax_key(seed, account=1) |
| 261 | other_address = avax_c_chain_address(other_key.public_key) |
| 262 | |
| 263 | canonical_bytes = claim["canonical_message"].encode() |
| 264 | sig_bytes = bytes.fromhex(claim["eth_sig"]) |
| 265 | assert not eip191_verify(sig_bytes, canonical_bytes, other_address) |
| 266 | |
| 267 | def test_eip191_verify_rejects_tampered_message(self, ed25519_signing, avax_key, avax_address): |
| 268 | """Verification must fail when the canonical message is tampered.""" |
| 269 | from muse.core.msign import build_payment_claim |
| 270 | from muse.core.secp256k1_sign import eip191_verify |
| 271 | |
| 272 | claim = build_payment_claim( |
| 273 | ed25519_signing, "gabriel", "alice", |
| 274 | 1, "nanoMUSE", "dd" * 32, "memo", ts=300, |
| 275 | avax_private_key=avax_key, |
| 276 | ) |
| 277 | sig_bytes = bytes.fromhex(claim["eth_sig"]) |
| 278 | tampered = b"MPAY\ngabriel\nalice\n9999999\nnanoMUSE\n" + b"d" * 64 + b"\nmemo\n300" |
| 279 | assert not eip191_verify(sig_bytes, tampered, avax_address) |
| 280 | |
| 281 | |
| 282 | # --------------------------------------------------------------------------- |
| 283 | # Stress: 50 consecutive dual-sig claims |
| 284 | # --------------------------------------------------------------------------- |
| 285 | |
| 286 | |
| 287 | class TestStress: |
| 288 | """Stress: 50 back-to-back dual-signed claims.""" |
| 289 | |
| 290 | def test_50_claims(self, ed25519_signing, avax_key, avax_address): |
| 291 | """Produce 50 dual-signed claims; all must have correct AVAX address.""" |
| 292 | from muse.core.msign import build_payment_claim |
| 293 | |
| 294 | for i in range(50): |
| 295 | nonce = hashlib.sha256(str(i).encode()).hexdigest() |
| 296 | claim = build_payment_claim( |
| 297 | ed25519_signing, "gabriel", "alice", |
| 298 | i * 100, "nanoMUSE", nonce, f"stress-{i}", ts=i, |
| 299 | avax_private_key=avax_key, |
| 300 | ) |
| 301 | assert claim["payer_avax_address"] == avax_address |
| 302 | assert len(claim["eth_sig"]) == 130 |
| 303 | |
| 304 | |
| 305 | # --------------------------------------------------------------------------- |
| 306 | # Data integrity: canonical_message matches signer input |
| 307 | # --------------------------------------------------------------------------- |
| 308 | |
| 309 | |
| 310 | class TestDataIntegrity: |
| 311 | """Canonical message structure matches what both signers used.""" |
| 312 | |
| 313 | def test_canonical_message_format(self, ed25519_signing): |
| 314 | """canonical_message must follow MPAY\\n…\\nTS format.""" |
| 315 | from muse.core.msign import build_payment_claim |
| 316 | |
| 317 | claim = build_payment_claim( |
| 318 | ed25519_signing, "payer", "payee", |
| 319 | 42_000, "nanoETH", "0" * 64, "stem:sha256:abc", ts=1_744_000_000, |
| 320 | ) |
| 321 | expected = "MPAY\npayer\npayee\n42000\nnanoETH\n" + "0" * 64 + "\nstem:sha256:abc\n1744000000" |
| 322 | assert claim["canonical_message"] == expected |
| 323 | |
| 324 | def test_dual_sig_uses_same_canonical_message(self, ed25519_signing, avax_key): |
| 325 | """Ed25519 and EIP-191 must sign the identical canonical bytes.""" |
| 326 | from muse.core.msign import build_payment_claim |
| 327 | from muse.core.secp256k1_sign import eip191_verify, avax_c_chain_address |
| 328 | |
| 329 | claim = build_payment_claim( |
| 330 | ed25519_signing, "p", "q", 1, "nanoMUSE", "ee" * 32, "x", ts=999, |
| 331 | avax_private_key=avax_key, |
| 332 | ) |
| 333 | addr = avax_c_chain_address(avax_key.public_key) |
| 334 | sig_bytes = bytes.fromhex(claim["eth_sig"]) |
| 335 | # EIP-191 verification uses canonical_message bytes — proves same input was signed |
| 336 | assert eip191_verify(sig_bytes, claim["canonical_message"].encode(), addr) |
| 337 | |
| 338 | |
| 339 | # --------------------------------------------------------------------------- |
| 340 | # Performance: dual-sig claim under 200 ms |
| 341 | # --------------------------------------------------------------------------- |
| 342 | |
| 343 | |
| 344 | class TestPerformance: |
| 345 | """Single dual-sig claim must complete within 200 ms.""" |
| 346 | |
| 347 | def test_claim_latency(self, ed25519_signing, avax_key): |
| 348 | """build_payment_claim with dual-sig must complete in < 200 ms.""" |
| 349 | from muse.core.msign import build_payment_claim |
| 350 | |
| 351 | start = time.perf_counter() |
| 352 | build_payment_claim( |
| 353 | ed25519_signing, "gabriel", "alice", |
| 354 | 1_000_000, "nanoMUSE", "ff" * 32, "perf test", |
| 355 | avax_private_key=avax_key, |
| 356 | ) |
| 357 | duration_ms = (time.perf_counter() - start) * 1000 |
| 358 | assert duration_ms < 200, f"Too slow: {duration_ms:.1f} ms" |
| 359 | |
| 360 | |
| 361 | # --------------------------------------------------------------------------- |
| 362 | # Security: AVAX fields absent by default; no key material in claim dict |
| 363 | # --------------------------------------------------------------------------- |
| 364 | |
| 365 | |
| 366 | class TestSecurity: |
| 367 | """Security properties of dual-sig claims.""" |
| 368 | |
| 369 | def test_no_avax_fields_by_default(self, ed25519_signing): |
| 370 | """AVAX fields must be completely absent unless explicitly requested.""" |
| 371 | from muse.core.msign import build_payment_claim |
| 372 | |
| 373 | claim = build_payment_claim( |
| 374 | ed25519_signing, "a", "b", 1, "nanoMUSE", "00" * 32, "", ts=0, |
| 375 | ) |
| 376 | avax_keys = {"payer_avax_address", "eth_sig", "recipient_avax_address"} |
| 377 | assert not avax_keys.intersection(claim.keys()) |
| 378 | |
| 379 | def test_no_private_key_in_claim(self, ed25519_signing, avax_key): |
| 380 | """The claim dict must not contain any private key material.""" |
| 381 | from muse.core.msign import build_payment_claim |
| 382 | |
| 383 | claim = build_payment_claim( |
| 384 | ed25519_signing, "a", "b", 1, "nanoMUSE", "11" * 32, "", ts=5, |
| 385 | avax_private_key=avax_key, |
| 386 | ) |
| 387 | # Private key bytes are 32 bytes; they must not appear as a value |
| 388 | priv_hex = avax_key.to_bytes().hex() |
| 389 | for v in claim.values(): |
| 390 | if isinstance(v, str): |
| 391 | assert priv_hex not in v |
| 392 | |
| 393 | def test_ed25519_domain_separation(self, ed25519_signing, avax_key): |
| 394 | """Ed25519 sig must differ from EIP-191 sig bytes — no cross-protocol reuse.""" |
| 395 | from muse.core.msign import build_payment_claim |
| 396 | |
| 397 | claim = build_payment_claim( |
| 398 | ed25519_signing, "a", "b", 1, "nanoMUSE", "22" * 32, "", ts=6, |
| 399 | avax_private_key=avax_key, |
| 400 | ) |
| 401 | ed_sig_hex = base64.urlsafe_b64decode(claim["signature_b64"] + "==").hex() |
| 402 | assert ed_sig_hex != claim["eth_sig"] |
| 403 | |
| 404 | |
| 405 | # --------------------------------------------------------------------------- |
| 406 | # Docstrings: public API coverage |
| 407 | # --------------------------------------------------------------------------- |
| 408 | |
| 409 | |
| 410 | class TestDocstrings: |
| 411 | """Public API must have docstrings.""" |
| 412 | |
| 413 | def test_build_payment_claim_docstring(self): |
| 414 | from muse.core.msign import build_payment_claim |
| 415 | assert build_payment_claim.__doc__ |
| 416 | |
| 417 | def test_payment_claim_docstring(self): |
| 418 | from muse.core.msign import PaymentClaim |
| 419 | assert PaymentClaim.__doc__ |
File History
3 commits
sha256:b636f72dcba9e190afb980bece906fa5b717fbde014b76ef023df8cb96e01eb9
docs: expand cache plan with all seven testing tiers and do…
Sonnet 4.6
131 days ago
sha256:7f9e2ef5286aedad9c1e6011b4c46ca27f39dbdad6e3409357e36b26e46b3b7c
docs: docstring sprint for-each-ref→hotspots — idiomatic ru…
Sonnet 4.6
patch
137 days ago
sha256:a09b1b4f6838754495547f200aa0ce88e2f56ffc5b20b900f6f0cff2c3cdede9
fix(cursorignore): remove git-ism (.git/worktrees)
Human
minor
⚠
140 days ago