{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "xAAL Message Definition - Security Layer",
  "description": "General form of the Security Layer of an xAAL message",
  "version": 0.5,
  "license": "Copyright Christophe Lohr Telecom Bretagne 2017 - Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without any warranty.",
  "type": "object",
  "properties": {
    "version": {
      "type": "string",
      "pattern": "^0.5$"
    },
    "targets": {
      "type": "string"
    },
    "timestamp": {
      "type": "array",
      "items": {
        "type": "integer",
        "minItems": 2,
        "maxItems": 2
      }
    },
    "payload": {
      "type": "string"
    }
  },
  "required": [ "version", "targets", "timestamp", "payload" ],
  "additionalProperties": false
}