Migrate to test::unit. Start moving functionality into HSMR Module and mixin to key and component models to reduce duplication.

lib/component.rb

@@ -0,0 +1,36 @@
+module HSMR
+  class Component
+    include HSMR
+    attr_reader :key
+    attr_reader :length
+    attr_reader :parity
+
+    def component
+      @key
+    end
+    
+    def initialize(key=nil, length=DOUBLE)
+      ## Should check for odd parity
+      if key.nil?
+        key = generate(length)
+      else
+        key=key.gsub(/ /,'')
+        #raise TypeError, "Component argument expected" unless other.is_a? Component
+      end
+      @key = key.unpack('a2'*(key.length/2)).map{|x| x.hex}.pack('c'*(key.length/2))
+      @length = @key.length
+      @key = @key
+    end
+    
+    def xor(other)
+      other = Component.new(other) unless other.is_a? Component
+      raise TypeError, "Component argument expected" unless other.is_a? Component
+      
+      @a = @key.unpack('C2'*(@key.length/2))
+      @b = other.component.unpack('C2'*(other.component.length/2))
+      result = @a.zip(@b).map {|x,y| x^y}.map {|z| z.to_s(16) }.join.upcase
+      Key.new(result)
+    end
+
+  end
+end