ca-config.json

{
  "signing": {
    "default": {
      "expiry": "8760h"
    },
    "profiles": {
      "client": {
        "expiry": "8760h",
        "usages": [
          "signing",
          "digital signature",
          "key encipherment",
          "client auth"
        ]
      },
      "intermediate": {
        "ca_constraint": {
          "is_ca": true,
          "max_path_len": 0,
          "max_path_len_zero": true
        },
        "expiry": "8760h",
        "usages": [
          "signing",
          "digital signature",
          "key encipherment",
          "cert sign",
          "crl sign",
          "server auth",
          "client auth"
        ]
      },
      "service": {
        "expiry": "8760h",
        "usages": [
          "signing",
          "digital signature",
          "key encipherment",
          "server auth"
        ]
      }
    }
  }
}