Class: ReCaptcha::MHClient

Inherits:
Object
  • Object
show all
Defined in:
lib/recaptcha.rb

Instance Method Summary collapse

Constructor Details

#initialize(pubkey, privkey) ⇒ MHClient 



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# File 'lib/recaptcha.rb', line 56

def initialize(pubkey, privkey)
  @pubkey=pubkey
  @privkey=privkey
  @host='mailhide.recaptcha.net'
end

Instance Method Details

#encrypt(string) ⇒ Object 



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# File 'lib/recaptcha.rb', line 61

def encrypt(string)
  padded = pad(string)
  iv="\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00"
  cipher=OpenSSL::Cipher::Cipher.new("AES-128-CBC")
  binkey = @privkey.unpack('a2'*16).map{|x| x.hex}.pack('c'*16)
  cipher.encrypt
  cipher.key=binkey
  cipher.iv=iv
  ciphertext = []
  cipher.padding=0
  ciphertext = cipher.update(padded)
  ciphertext << cipher.final() rescue nil 
  Base64.encode64(ciphertext).strip.gsub(/\+/, '-').gsub(/\//, '_').gsub(/\n/,'')
end

#pad(str) ⇒ Object 



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# File 'lib/recaptcha.rb', line 75

def pad(str)
  l= 16-(str.length%16)
  l.times do
    str<< l
  end
  str
end