Class: Fastweb

Inherits:
Object
  • Object
show all
Defined in:
lib/rubywpa/networks/fastweb.rb

Class Method Summary collapse

Class Method Details

.compute(ssid) ⇒ Object 



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# File 'lib/rubywpa/networks/fastweb.rb', line 2

def self.compute(ssid)
  begin
    seq_20 = "\x22\x33\x11\x34\x02\x81\xFA\x22\x11\x41\x68\x11\x12\x01\x05\x22\x71\x42\x10\x66";
    serial_number_bytes = ssid.split('-')[2].scan(/[a-f0-9]{2}/i)
    str = ''
    (0..5).each{ |idx| str << serial_number_bytes[idx].hex.chr }
    str << seq_20

    # MD5
    str_long = ''
    Digest::MD5.hexdigest(str).scan(/[a-f0-9]{2}/i).each{ |byte| str_long << byte.hex.to_s(2).rjust(8, '0') }

    # HEX
    hex_5 = []
    i = 0
    while i < 25
      n = str_long[i, 5].to_i(2)
      if n > 0x0a
        hex_5 << (n + 0x57)
      else
        hex_5 << n
      end
      i += 5
    end

    # WPA
    wpa = ''
    hex_5.each{ |hex| wpa << sprintf("%02x", hex) }
    wpa
  rescue Exception => e
    "Fastweb parser raised: SSID not supported yet"
  end
end