Class: ActsAsHavingStringId::TEA

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

Constant Summary collapse

DELTA = 
0x9e3779b9
ITERATIONS = 
32

Instance Method Summary collapse

Constructor Details

#initialize(pass_phrase) ⇒ TEA

Returns a new instance of TEA.



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# File 'lib/acts_as_having_string_id/tea.rb', line 36

def initialize(pass_phrase)
  @key = passphrase_to_key(pass_phrase)
end

Instance Method Details

#decrypt(num) ⇒ Object 



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# File 'lib/acts_as_having_string_id/tea.rb', line 46

def decrypt(num)
  nums = to_32bit_ints(num)
  dec = decrypt_chunk(nums[0], nums[1], @key)
  from_32bit_ints(dec[0], dec[1])
end

#encrypt(num) ⇒ Object 



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# File 'lib/acts_as_having_string_id/tea.rb', line 40

def encrypt(num)
  nums = to_32bit_ints(num)
  enc = encrypt_chunk(nums[0], nums[1], @key)
  from_32bit_ints(enc[0], enc[1])
end