Dead Drop Drop Structure

{
  "$schema": "https://json-structure.org/v1/",
  "$id": "https://raw.githubusercontent.com/api-evangelist/dead-drop/main/json-structure/dead-drop-drop-structure.json",
  "name": "Drop",
  "description": "Structural definition of the dead-drop Drop resource.",
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "description": "SHA-256 hash of the drop name (64 hex characters)."
    },
    "name": {
      "type": "string",
      "description": "Human-friendly 4-word kebab-case drop name."
    },
    "tier": {
      "type": "string",
      "description": "Drop tier (free or deep)."
    },
    "visibility": {
      "type": "string",
      "description": "Drop visibility (private or public)."
    },
    "payload": {
      "type": "string",
      "description": "Drop payload. Hex ciphertext for private drops; plaintext for public drops."
    },
    "salt": {
      "type": "string",
      "description": "Hex-encoded PBKDF2 salt (16 bytes)."
    },
    "iv": {
      "type": "string",
      "description": "Hex-encoded AES-GCM IV (12 bytes)."
    },
    "encryptionAlgo": {
      "type": "string",
      "description": "Encryption algorithm identifier."
    },
    "encryptionParams": {
      "type": "object",
      "description": "Encryption parameter bag (e.g. PBKDF2 rounds)."
    },
    "mimeType": {
      "type": "string",
      "description": "MIME type of drop content."
    },
    "hashAlgo": {
      "type": "string",
      "description": "Hash algorithm used for the drop id and admin authentication."
    },
    "contentHash": {
      "type": "string",
      "description": "SHA-256 hash of the canonical content payload JSON."
    },
    "expiresAt": {
      "type": "string",
      "description": "ISO 8601 expiration timestamp."
    }
  }
}