A much better commit of the raw rmagick access. Huge time improvement for calculating the salt.

encode_image.rb

@@ -7,11 +7,11 @@ class EncodeImage
   @@utils = nil
 
 
-  def initialize(p, m, i)
+  def initialize(p, m, uri)
     @@password = p
     @@message  = m
 
-    @@utils = ImageUtils.new(@@password, @@message, i)
+    @@utils = ImageUtils.new(@@password, @@message, uri)
 
     @@table = @@utils.generateLookupTable
   end
@@ -32,46 +32,4 @@ class EncodeImage
 
     @@utils.getImage.saveImage
   end
-
-
-# Need to properly sever this at some point...
-
-  def decode
-puts "Hacked in decode..."
-    s = @@utils.getImage.getSize
-
-    msg_bits = 0
-
-    @@table.reverse.each do |loc|
-      pixel = @@utils.getImage.getPixel(loc[:x], loc[:y])
-      msg_bits = (msg_bits << 6) | pixel.decodeBits
-    end
-
-#this trash needs to move somewhere...
-puts "Try to convert the message..."
-    len = msg_bits & 0xffff
-    msg_bits = msg_bits >> 16
-
-    # check the padding bits....
-    if (msg_bits & 255) != 0 then
-puts "Padding failed scrutiny! "
-puts msg_bits.to_s(2)
-      return false
-    end
-
-    msg_bits = msg_bits >> 8
-
-puts "Padding passed scrutiny..."
-    msg_chars = []
-
-    while msg_bits > 0 do
-      byte = msg_bits & 0xff
-      msg_chars.push(byte.chr)
-      msg_bits = msg_bits >> 8
-    end
-
-    msg = msg_chars.reverse.join
-
-    return msg
-  end
 end

image_utils.rb

@@ -1,65 +1,65 @@
-require "./pixel_image.rb"
+require "rmagick"
 require "digest"
 
 class ImageUtils
   @@magickImg = nil
-  @@pixelImg = nil
 
   @@password = ""
   @@message = ""
 
   @@hash = nil
 
-  def initialize(pass, msg, i)
+  @@width = 0
+  @@height = 0
+
+  @@pixel_arr = []
+
+  def initialize(pass, msg, uri)
     @@password = pass
     @@message  = msg
+    @@salt     = 0
+
+    @@magickImg = Magick::Image.read(uri).first
+
+    @@width = @@magickImg.columns
+    @@height = @@magickImg.rows
+
+    @@pixel_arr = @@magickImg.get_pixels(0, 0, @@width, @@height)
 
     if msg.length > 1024 then
       puts "Maximum length exceeded.  Exiting."
       exit
     end
 
-    @@magickImg = i
-
-    @@pixelImg = PixelImage.new(@@magickImg)
-
     self.generateHash
   end
 
-  def getImage
-    return @@pixelImg
+  def getPixel(x, y)
+    loc = (y*@@width) + x
+
+    return @@pixel_arr[loc]
+  end
+
+  def getSalt
+    for x in 0..@@width-1
+      for y in 0..@@height-1
+        pix = self.getPixel(x, y)
+
+        @@salt = @@salt + (pix.red/512)
+        @@salt = @@salt + (pix.green/512)
+        @@salt = @@salt + (pix.blue/512)
+      end
+    end
+
+    h = Digest::SHA512.hexdigest(@@salt.to_s(16))
+
+    return h
   end
 
   def generateHash
-    h = Digest::SHA512.hexdigest(@@password)
-    s = @@pixelImg.getSalt
+    pass_h = Digest::SHA512.hexdigest(@@password)
 
-    @@hash = Digest::SHA512.hexdigest(self.interlaceHash(h, s))
-  end
-
-  def interlaceHash(h1, h2)
-    puts h1
-    puts h2
-
-    h1 = self.getBits(h1)
-    h2 = self.getBits(h2)
-    
-    interlaced = 0
-
-    while h1.to_i > 0 and h2.to_i > 0 do
-      interlaced = (interlaced << 1) | (h1 & 1)
-      h1 = h1 >> 1
-      interlaced = (interlaced << 1) | (h2 & 1)
-      h2 = h2 >> 1
-
-#      puts interlaced
-#      puts h1
-#      puts h2
-    end
-
-    puts interlaced.to_s.inspect
-
-    return interlaced.to_s
+    @@hash = Digest::SHA512.hexdigest(pass_h + @@salt.to_s)
   end
 
   def generateLookupTable
@@ -113,4 +113,4 @@ class ImageUtils
 
     return msg_bits
   end
-end
+end

runner.rb

@@ -1,13 +1,10 @@
-require "rmagick"
-
 require "./image_utils.rb"
 require "./encode_image.rb"
 
-img = Magick::ImageList.new "./images/original/arty.png"
-
 #srand(12345)
 
 pass = "my_password"
+
 message = "This is the message that I would like to save please " +
           "and thank you also I love you? AND apostrophe's, and " +
           "also some commas somewhere hiding around here,  It's " +
@@ -24,17 +21,21 @@ message = "This is the message that I would like to save please " +
           "are going even further.  further than anyone believed " +
           "`~!@\#\{$%^&*()-_=+\][}{';:'}]} Wooow. 123456789!1234" +
           "56789! so put 15 more??????400!"
-#message = "tests"
 
 puts message.length
 puts message
 puts
 
-puts "Initializing EncodeImage..."
-
 start = Time.new.to_f
 
-em = EncodeImage.new(pass, message, img)
+puts "Initializing EncodeImage..."
+
+iu = ImageUtils.new(pass, message, "./images/original/arty.png")
+
+puts "Took " + (Time.new.to_f - start).to_s + " seconds to encode... 🐱"
+
+=begin
+em = EncodeImage.new(pass, message, "./images/original/arty.png")
 
 puts em.encode
 puts "Took " + (Time.new.to_f - start).to_s + " seconds to encode... 🐱"
@@ -46,13 +47,12 @@ result = em.decode
 
 puts result
 
+=end
+
 puts "Took " + (Time.new.to_f - start).to_s + " seconds to decode... 🐱"
 
 if message == result then
   puts "WOW THEY MATCH! 🐱🐱🐱🐱🐱🐱🐱🐱"
 end
 
-exit  
-puts
-
 puts "Done!"