{
  "ca-prefix": "/ndn",
  "ca-info": "ndn testbed ca",
  "max-validity-period": "864000",
  "max-suffix-length": 3,
  "probe-parameters":
  [
      { "probe-parameter-key": "full name" }
  ],
  "supported-challenges":
  [
      { "challenge": "PIN" }
  ],
  "name-assignment":
  {
    "nonexistent": ""
  }
}