From 975bf61ddfc43e20e1ed3c0f4d183c97d5695905 Mon Sep 17 00:00:00 2001
From: Dan Milne <d@nmilne.com>
Date: Fri, 2 Dec 2011 14:07:48 +1100
Subject: [PATCH] Keep the lib directory clean.

---
 lib/hsmr/component.rb | 38 +++++++++++++++++++++++++++++
 lib/hsmr/key.rb       | 56 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 lib/hsmr/component.rb
 create mode 100644 lib/hsmr/key.rb

diff --git a/lib/hsmr/component.rb b/lib/hsmr/component.rb
new file mode 100644
index 0000000..bd97c43
--- /dev/null
+++ b/lib/hsmr/component.rb
@@ -0,0 +1,38 @@
+module HSMR
+  class Component
+    include HSMR
+    attr_reader :key
+    attr_reader :length
+
+    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
+#      result = @a.zip(@b).map {|x,y| x^y}.map {|z| z.to_s(16) }.map {|c| c.length == 1 ? '0'+c : c }.join.upcase
+#
+#      Key.new(result)
+#    end
+
+  end
+end
diff --git a/lib/hsmr/key.rb b/lib/hsmr/key.rb
new file mode 100644
index 0000000..4920a87
--- /dev/null
+++ b/lib/hsmr/key.rb
@@ -0,0 +1,56 @@
+module HSMR
+  class Key
+    include HSMR
+
+    attr_reader :key
+    attr_reader :length
+
+    def initialize(init=nil, length=DOUBLE)
+      return nil if (init.is_a? Array ) && (init.length == 0) 
+      
+      init = init.first if (init.is_a? Array) && (init.length == 1)
+      
+      if init.is_a? Array
+        init.collect! {|c| ( (c.is_a? HSMR::Component) ? c : HSMR::Component.new(c) ) }
+
+        raise TypeError, "Component argument expected" unless init.first.is_a? Component
+      
+        @key=HSMR::xor(init.pop, init).key
+    
+      elsif init.is_a? Component
+        @key = init.component
+      elsif init.is_a? String
+        key=init.gsub(/ /,'')
+        @key = key.unpack('a2'*(key.length/2)).map{|x| x.hex}.pack('c'*(key.length/2))
+      elsif key.nil?
+        key = generate(length)
+        @key = key.unpack('a2'*(key.length/2)).map{|x| x.hex}.pack('c'*(key.length/2))
+      end
+      @length = @key.length
+    end 
+
+    #def xor(other)
+    #  other=Component.new(other) if other.is_a? String
+    #  other=Component.new(other.to_s) if other.is_a? Key
+#
+#      puts "other is #{other.class} - #{other.key}"
+#      
+#      raise TypeError, "Component argument expected" unless other.is_a? Component
+#      
+#      @a = @key.unpack('C2'*(@key.length/2))
+#      @b = other.component.unpack('C2'*(other.length/2))
+#      
+#      resultant = Key.new( @a.zip(@b).
+#                          map {|x,y| x^y}.
+#                          map {|z| z.to_s(16) }.
+#                          map {|c| c.length == 1 ? '0'+c : c }.
+#                          join.upcase )
+#      resultant
+#    end
+#    
+#    def xor!(_key)
+#      @key = xor(_key).key
+#    end
+
+  end
+end