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nerves_hub_cli

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NervesHub Mix command-line interface

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nerves_hub_cli lib nerves_hub_cli crypto.ex
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lib/nerves_hub_cli/crypto.ex 

defmodule NervesHubCLI.Crypto do

  @spec encrypt(String.t(), String.t(), String.t()) :: binary() | {:error, String.t()}

  def encrypt(plain_text, password, tag \\ "") do

    protected = %{

      alg: "PBES2-HS512",

      enc: "A256GCM",

      p2c: 4096,

      p2s: :crypto.strong_rand_bytes(32)

    }



    PBCS.encrypt({tag, plain_text}, protected, password: password)

  end



  @spec decrypt(binary(), any(), binary()) :: {:ok, binary()} | {:error, String.t()}

  def decrypt(cipher_text, password, tag \\ "") do

    case PBCS.decrypt({tag, cipher_text}, password: password) do

      plain_text when is_binary(plain_text) -> {:ok, plain_text}

      :error -> {:error, "unknown"}

      other -> other

    end

  end

end