{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "KeyCredential",
  "type": "object",
  "description": "Contains a key credential (certificate) associated with an application or service principal.",
  "properties": {
    "customKeyIdentifier": {
      "type": "['string', 'null']",
      "description": "Custom key identifier."
    },
    "displayName": {
      "type": "['string', 'null']"
    },
    "endDateTime": {
      "type": "string",
      "description": "The date and time at which the credential expires."
    },
    "key": {
      "type": "['string', 'null']",
      "description": "The certificate raw data in byte array converted to Base64 string."
    },
    "keyId": {
      "type": "string"
    },
    "startDateTime": {
      "type": "string"
    },
    "type": {
      "type": "string",
      "description": "The type of key credential (e.g., AsymmetricX509Cert)."
    },
    "usage": {
      "type": "string",
      "description": "Describes the purpose of the key. Valid values are Verify and Sign."
    }
  }
}