Updated

Signed-off-by: Marcin Woźniak <y0rune@aol.com>

4-lab/alice.rb

@@ -0,0 +1,37 @@
+#!/usr/bin/ruby
+
+#####################################
+#
+# Marcin Woźniak
+# s434812
+#
+#####################################
+
+require 'socket'
+
+load 'modul1.rb'
+
+sock = TCPSocket.new("localhost",3000)
+puts sock.gets
+
+
+spec=specyficPrimaryNumber
+
+p,q = spec[0], spec[1]
+
+g = generator(p,q)
+
+x = SecureRandom.random_number(2..p-2)
+y = betterExponentiation(g,x,p)
+
+privKey = [p, q, y]
+pubKey = [p, x]
+
+puts "privKey(p,q,y): " +  privKey.inspect
+puts "pubKey(p,x): " + pubKey.inspect
+puts
+puts p.inspect.unpack('b*')
+puts
+sock.puts p.inspect.unpack("b*")
+sock.puts x.inspect.unpack("b*")
+sock.close

4-lab/bob.rb

@@ -0,0 +1,35 @@
+#!/usr/bin/ruby
+#
+######################################
+#
+# Marcin Woźniak
+# s434812
+#
+#####################################
+
+require 'socket'
+
+load 'modul1.rb'
+
+
+while true
+  sock = TCPServer.new(3000)
+  client = sock.accept
+  client.puts "Hej Alice"
+
+  p = [client.gets.gsub(/\n$/, '')].pack("b*").to_i
+  x = [client.gets.gsub(/\n$/, '')].pack("b*").to_i
+
+  puts p.inspect
+  puts x.inspect
+
+  message = File.read("message.txt")
+  c = OpenSSL::Cipher::AES.new(256, 'CBC')
+  c.encrypt
+  iv = p.first(16)
+  c.key = x
+  encrypted = c.update(message) + c.final
+
+  puts encrypted.inspect
+  sock.close
+end

4-lab/message.txt

@@ -0,0 +1 @@
+cos cos

4-lab/modul1.rb

@@ -132,23 +132,28 @@ def randomNumber(k)
 end
 
 def specyficPrimaryNumber
-  starting = Process.clock_gettime(Process::CLOCK_MONOTONIC)
   while true do
     q = SecureRandom.random_number(2 ** 256)
     p = 2 * q + 1
-    t1 = Thread.new{primalityTest(q)}
-    t2 = Thread.new{primalityTest(p)}
-    if t1.join.value && t2.join.value
-      ending = Process.clock_gettime(Process::CLOCK_MONOTONIC)
-      elapsed = ending - starting
-      puts elapsed.inspect
-
+    #t1 = Thread.new{primalityTest(q)}
+    #t2 = Thread.new{primalityTest(p)}
+    #if t1.join.value && t2.join.value
+    if primalityTest(q) && primalityTest(p)
       return p,q
     end
   end
 end
 
-puts specyficPrimaryNumber
+def generator(p,q)
+  while true
+    g = SecureRandom.random_number(2..p-2)
+    if betterExponentiation(g,q,p) == 1
+      next
+    else
+      return g
+    end
+  end
+end
 
 ###################################################################################
 

4-lab/xclip

@@ -1,12 +0,0 @@
-def randomNumber(k)
-  randomNumberArray=[]
-  randomNumberArray << 1
-  k= k - 1
-
-  while (k !=0 ) do
-    j = SecureRandom.random_number(2)
-    randomNumberArray << j
-    k = k - 1
-  end
-  return randomNumberArray.join
-end