{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "keys": {
      "minItems": 1,
      "maxItems": 100,
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "kty": {
            "type": "string",
            "const": "EC"
          },
          "crv": {
            "type": "string",
            "const": "P-256"
          },
          "x": {
            "type": "string",
            "pattern": "^[A-Za-z0-9_-]{42}[AEIMQUYcgkosw048]$"
          },
          "y": {
            "type": "string",
            "pattern": "^[A-Za-z0-9_-]{42}[AEIMQUYcgkosw048]$"
          },
          "kid": {
            "type": "string",
            "pattern": "^[A-Za-z0-9_-]{42}[AEIMQUYcgkosw048]$"
          },
          "alg": {
            "type": "string",
            "const": "ES256"
          },
          "use": {
            "type": "string",
            "const": "sig"
          },
          "exp": {
            "type": "integer",
            "minimum": 1,
            "maximum": 253402300799
          }
        },
        "required": [
          "kty",
          "crv",
          "x",
          "y",
          "kid",
          "alg",
          "use"
        ],
        "additionalProperties": false
      }
    }
  },
  "required": [
    "keys"
  ],
  "additionalProperties": false
}