Class: CryptoToolbox::Oracles::PaddingOracle::HttpOracle

Inherits:
Object
  • Object
show all
Defined in:
lib/crypto-toolbox/oracles/padding_oracle/http_oracle.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ HttpOracle

Returns a new instance of HttpOracle.



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# File 'lib/crypto-toolbox/oracles/padding_oracle/http_oracle.rb', line 5

def initialize
  require 'net/http'
  @domain   = "crypto-class.appspot.com"
  @uri_base = "/po?er="
  @port     = 80
end

Instance Method Details

#connect ⇒ Object 



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# File 'lib/crypto-toolbox/oracles/padding_oracle/http_oracle.rb', line 11

def connect
  true
end

#disconnect ⇒ Object 



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# File 'lib/crypto-toolbox/oracles/padding_oracle/http_oracle.rb', line 14

def disconnect
  true
end

#valid_padding?(input, block_amount) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/crypto-toolbox/oracles/padding_oracle/http_oracle.rb', line 17

def valid_padding?(input,block_amount)

  uri = @uri_base + input.hex

  Net::HTTP.start(@domain,@port) do |http|
    res   = http.request(Net::HTTP::Get.new(uri))
    code  = res.code.to_i
    sleep 0.001
    
    #   -> howto check this ? (block_index == 3 && pad_index == 9 && code == 200 )
    (code == 404 || code == 200)
  end
end