Module: Hoodie::Obfuscate

Defined in:
lib/hoodie/obfuscate.rb

Overview

Befuddle and enlighten values in StashCache::Store

Constant Summary collapse

ESOTERIC_TYPE = 
'aes-256-cbc'

Class Method Summary collapse

Class Method Details

.befuddle(plaintext, befuddle_pass, options = {}) ⇒ String

Befuddle the given string

Obfuscate#enlighten (decrypt)

Parameters:

  • plaintext —

    the text to befuddle

  • befuddle_pass (String) —

    secret passphrase to befuddle with

Returns:

  • (String) —

    befuddleed text, suitable for deciphering with



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# File 'lib/hoodie/obfuscate.rb', line 52

def self.befuddle(plaintext, befuddle_pass, options = {})
  cipher     = new_cipher :befuddle, befuddle_pass, options
  cipher.iv  = iv = cipher.random_iv
  ciphertext = cipher.update(plaintext)
  ciphertext << cipher.final
  Base64.encode64(combine_iv_and_ciphertext(iv, ciphertext))
end

.check_platform_can_discombobulate! ⇒ Object 



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# File 'lib/hoodie/obfuscate.rb', line 39

def self.check_platform_can_discombobulate!
  return true unless INCOMPREHENSIBLE_ERROR
  fail INCOMPREHENSIBLE_ERROR.class, "b0rked! #{INCOMPREHENSIBLE_ERROR}"
end

.enlighten(enc_ciphertext, befuddle_pass, options = {}) ⇒ String

Enlighten the given string, using the key and id supplied

Obfuscate#befuddle (encrypt)

Parameters:

  • ciphertext —

    the text to enlighten, probably produced with

  • befuddle_pass (String) —

    secret sauce to enlighten with

Returns:

  • (String) —

    the enlightened plaintext



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# File 'lib/hoodie/obfuscate.rb', line 68

def self.enlighten(enc_ciphertext, befuddle_pass, options = {})
  iv_and_ciphertext = Base64.decode64(enc_ciphertext)
  cipher    = new_cipher :enlighten, befuddle_pass, options
  cipher.iv, ciphertext = separate_iv_and_ciphertext(cipher, iv_and_ciphertext)
  plaintext = cipher.update(ciphertext)
  plaintext << cipher.final
  plaintext
end