{
 "v": 1,
 "kind": "aere-conformance-vector",
 "id": "envelope/signed-head.signature-classical-key",
 "artifact": "envelope",
 "title": "the signature declares ml-dsa-65 and was made with an Ed25519 key: a classical signature is not a post-quantum one because it says so",
 "source": "derived from envelope/signed-head.valid",
 "requires": [],
 "exercises": [
  "envelope.form",
  "envelope.integrity",
  "envelope.signature"
 ],
 "base": "envelope/signed-head.valid",
 "mutation": {
  "producer": "the signer used a classical key (Ed25519, made and discarded at generation) and declared the scheme ml-dsa-65",
  "changed": [
   [
    "envelope",
    "signature",
    "publicKey"
   ],
   [
    "envelope",
    "signature",
    "signature"
   ]
  ]
 },
 "input": {
  "envelope": {
   "v": 1,
   "kind": "aere-audit-tree-head-attestation",
   "statement": {
    "v": 1,
    "kind": "aere-audit-tree-head",
    "host": "conformance",
    "treeSize": 3,
    "rootHash": "0xfeabb16d0b795805345b053ff7b77d732ca566303b0dace87992b667674b1bd3",
    "createdAt": "2026-10-03T09:33:28.671Z"
   },
   "statementHash": "0xe661da6bb6f98b38d5b891debb4b72111b90852f133bed0f6dc22cb3f9ae6c41",
   "signature": {
    "scheme": "ml-dsa-65",
    "publicKey": "MCowBQYDK2VwAyEAhL3xG9ucSsJb+ektvn4qeSgiiDwXofCsjuQf+G2NB+M=",
    "signature": "AmhVjs2RszYtKNZlUuWC0q2HowZyOfYDfKJYzWAYApHzvYy4mNpxSVMx/sjx57uWkwBcqccjXn0Z2cN3hidMDw=="
   }
  }
 },
 "expected": {
  "verdict": "INVALID",
  "failed": [
   "envelope.signature"
  ],
  "levels": {
   "integrity": "PASSED",
   "authenticity": "FAILED",
   "anchoring": "NOT_MEASURED",
   "finality": "NOT_MEASURED"
  }
 }
}