48 lines
1.2 KiB
Elixir
48 lines
1.2 KiB
Elixir
defmodule RosettacodeBruteForce do
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require Logger
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@spec start() :: :ok
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def start() do
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children = [
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{Task.Supervisor, name: Bf.TaskSupervisor}
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]
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Supervisor.start_link(children, strategy: :one_for_one)
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start_bf("1115dd800feaacefdf481f1f9070374a2a81e27880f187396db67958b207cbad")
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start_bf("3a7bd3e2360a3d29eea436fcfb7e44c735d117c42d1c1835420b6b9942dd4f1b")
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start_bf("74e1bb62f8dabb8125a58852b63bdf6eaef667cb56ac7f7cdba6d7305c50a22f")
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:ok
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end
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@spec start_bf(String.t()) :: :ok
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def start_bf(target) do
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Enum.each(0..25, fn a ->
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Enum.each(0..25, fn b ->
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Task.Supervisor.async(Bf.TaskSupervisor, fn ->
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solve_bf(a, b, target)
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end)
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end)
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end)
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:ok
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end
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defp solve_bf(a, b, target) do
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Enum.each(0..25, fn x ->
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Enum.each(0..25, fn y ->
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Enum.each(0..25, fn z ->
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candidate = List.to_string([?a + a, ?a + b, ?a + x, ?a + y, ?a + z])
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if (check_hash?(candidate, target)) do
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Logger.info("SOLVED: #{candidate} = #{target}")
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end
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end)
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end)
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end)
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:ok
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end
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defp check_hash?(candidate, target) do
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target == :crypto.hash(:sha256, candidate)
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|> Base.encode16()
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|> String.downcase()
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end
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end
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