have-code¶ ↑

Add clever little base36 codes for your DataMapper and ActiveRecord objects.

Whoa seriously??¶ ↑

# ActiveRecord
class Mug < ActiveRecord::Base
  have_code 60466169, 12034710206, 81268112
end

initech = Mug.create :name=>'initech', :material=>'porcelain'
code = initech.code
initech == Mug.find_by_code code

# DataMapper
class Goblet
  include DataMapper::Resource
  property :id, Serial
  property :name, String
  property :material, String
  have_code 60466169, 12034710206, 81268112
end
kohg = Goblet.create :name=>'king of hyrule', :material=>'gold'
code = kohg.code
kohg == Goblet.find_by_code code

What are those big numbers?¶ ↑

In order:

modulus

specifies how many different plaintexts and ciphertexts are available.

a_key

multiplied against the plaintext. Must be coprime with the modulus.

b_key

added to the multiplied plaintext. No restrictions, but it’s modulus math, so making it larger than modulus is useless.

Change them to whatever you want, write tests to make sure they work as expected.

How secure is it?¶ ↑

Affine ciphers are incredibly easy to break. See the readme for the affine gem or en.wikipedia.org/wiki/Affine_cipher for more.

Dependencies¶ ↑

• affine

Copyright¶ ↑

Copyright © 2009 Bryce Kerley. See LICENSE for details.