# File lib/sup/crypto.rb, line 14
  def initialize
    @mutex = Mutex.new

    bin = `which gpg`.chomp
    @cmd = case bin
    when /\S/
      debug "crypto: detected gpg binary in #{bin}"
      "#{bin} --quiet --batch --no-verbose --logger-fd 1 --use-agent"
    else
      debug "crypto: no gpg binary detected"
      nil
    end
  end