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README.md

elm-random-secure Build Status

Cryptographic random number generation for Elm.

A simple wrapper around the window.crypto.getRandomValues API to generate cryptographic random values in Elm.

Example

Random generation function return a Task. Depending on your use case, you might want to convert the task to an Effects or otherwise use it.

Assuming you're using start-app, in your update function:

update : Action -> Model -> (Model, Effects Action)
update action model =
  case action of
    Toss ->
      ( model
      , SecureRandom.bool -- generating a random Bool value here
          |> Task.toMaybe
          |> Task.map Catch
          |> Effects.task
      )

    Catch coin ->
      ({ model | coin = coin }, Effects.none)

TODO

  • Tests
  • Invalid argument handling

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Generate cryptographically random values in Elm

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