Class: Objc_Obfuscator::StringEncryptor

Inherits:
Object
  • Object
show all
Defined in:
lib/objc-obfuscator/stringencryptor.rb

Defined Under Namespace

Classes: EncryptorError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(key) ⇒ StringEncryptor

Returns a new instance of StringEncryptor.



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# File 'lib/objc-obfuscator/stringencryptor.rb', line 14

def initialize(key)
  @key = key
end

Instance Attribute Details

#key ⇒ Object

Returns the value of attribute key.



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# File 'lib/objc-obfuscator/stringencryptor.rb', line 8

def key
  @key
end

#last_iv ⇒ Object (readonly)

Returns the value of attribute last_iv.



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# File 'lib/objc-obfuscator/stringencryptor.rb', line 6

def last_iv
  @last_iv
end

#last_salt ⇒ Object (readonly)

Returns the value of attribute last_salt.



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# File 'lib/objc-obfuscator/stringencryptor.rb', line 7

def last_salt
  @last_salt
end

Instance Method Details

#encrypt(unencrypted_string) ⇒ Object 



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# File 'lib/objc-obfuscator/stringencryptor.rb', line 18

def encrypt(unencrypted_string)
  raise EncryptorError::Error "FATAL: Can't encrypt with an empty key" if key.empty?
  return '' if unencrypted_string.empty?
  salt = Time.now.to_i.to_s
  iv = OpenSSL::Cipher::Cipher.new('aes-256-cbc').random_iv
  Encryptor.default_options.merge!(:key => key , :iv => iv, :salt => salt)
  
  encrypted_string = Base64.strict_encode64 unencrypted_string.encrypt
  @last_iv = Base64.strict_encode64 iv
  @last_salt = Base64.strict_encode64 salt

  "#{encrypted_string}-#{last_iv}-#{last_salt}"

end