Class: Captcha::Cipher
- Inherits:
-
Object
- Object
- Captcha::Cipher
- Defined in:
- lib/captcha/cipher.rb
Constant Summary collapse
- @@key =
Digest::SHA1.hexdigest(Config.[:password])
- @@iv =
'captchas'*2
Class Method Summary collapse
Class Method Details
.decrypt(text) ⇒ Object
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# File 'lib/captcha/cipher.rb', line 25 def self.decrypt(text) # Decode chr coded string encrypted = text.split('_').collect do |x| x.to_i.chr end encrypted = encrypted.join('') # Decrypt cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc") cipher.decrypt cipher.key = @@key cipher.iv = @@iv decrypted = cipher.update(encrypted) decrypted << cipher.final end |
.encrypt(text) ⇒ Object
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# File 'lib/captcha/cipher.rb', line 9 def self.encrypt(text) # Encrypt cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc") cipher.encrypt cipher.key = @@key cipher.iv = @@iv encrypted = cipher.update(text) encrypted << cipher.final # Turn into chr codes separated by underscores # 135_14_163_53_43_135_172_31_1_23_169_81_49_110_49_230 encrypted = (0..encrypted.length-1).collect do |x| encrypted[x] end encrypted.join('_') end |