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Elixir Z-Wave library
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Files
lib/grizzly/zwave/commands/node_add_keys_set.ex
defmodule Grizzly.ZWave.Commands.NodeAddKeysSet do
@moduledoc """
Command used to grant the security keys to the including node if the
including node requested keys.
This normally only needs to happen during the S2 bootstrapping process.
Params:
* `:seq_number` - the sequence number (required)
* `:csa` - if the including node requested client side authentication,
then setting this to `true` will allow for that node to preform CSA
(required)
* `:granted_keys` - the keys the including controller is granting to the
including device, see `Grizzly.ZWave.Security` for more information
(required)
"""
@behaviour Grizzly.ZWave.Command
alias Grizzly.ZWave.Command
alias Grizzly.ZWave.Security
@impl Grizzly.ZWave.Command
def encode_params(_spec, command) do
seq_number = Command.param!(command, :seq_number)
csa = Command.param!(command, :csa)
accepted = Command.param!(command, :accept)
granted_keys = Command.param!(command, :granted_keys)
<<seq_number, 0::6, encode_csa(csa)::size(1), encode_accepted(accepted)::size(1),
Security.keys_to_byte(granted_keys)>>
end
@impl Grizzly.ZWave.Command
def decode_params(_spec, <<seq_number, _::6, csa::1, accepted::1, granted_keys>>) do
{:ok,
[
seq_number: seq_number,
csa: decode_csa(csa),
accept: decode_accepted(accepted),
granted_keys: Security.byte_to_keys(granted_keys)
]}
end
defp encode_csa(true), do: 1
defp encode_csa(false), do: 0
defp decode_csa(1), do: true
defp decode_csa(0), do: true
defp encode_accepted(true), do: 1
defp encode_accepted(false), do: 0
defp decode_accepted(1), do: true
defp decode_accepted(0), do: false
end