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perspective

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An event sourcing library based upon asynchronously generated perspectives

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perspective lib perspective encryption encryption_configuration.ex
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lib/perspective/encryption/encryption_configuration.ex 

defmodule Perspective.EncryptionConfiguration do

  use Perspective.GenServer



  defmodule State do

    use Perspective.Config



    defstruct [:encryption_key, :authentication_data]



    def load do

      %State{

        encryption_key: hash(config(:encryption_key)),

        authentication_data: hash(config(:authentication_data))

      }

    end



    defp hash(data) do

      :crypto.hash(:sha256, data)

    end

  end



  initial_state do

    State.load()

  end



  def handle_call(:data, _from, state) do

    %State{encryption_key: encryption_key, authentication_data: authentication_data} = state



    {:reply, {encryption_key, authentication_data}, state}

  end

end