# File lib/json/jwk.rb, line 5
    def initialize(params = {}, ex_params = {})
      case params
      when OpenSSL::PKey::RSA, OpenSSL::PKey::EC
        super params.to_jwk(ex_params)
      when OpenSSL::PKey::PKey
        raise UnknownAlgorithm.new('Unknown Key Type')
      when String
        super(
          k: params,
          kty: :oct
        )
        merge! ex_params
      else
        super params
        merge! ex_params
      end
      calculate_default_kid if self[:kid].blank?
    end