Merge pull request #7 from benphelps/patch-1

Add ruby example

README.md

@@ -14,6 +14,7 @@ Simple implementation of XOR Encryption/Decrypting in various languages, includi
 - [JavaScript \(Node.js Compatible\)](JavaScript/XOREncryption.js)
 - [Objective-C](Objective-C/main.m)
 - [Python](Python/XOREncryption.py)
+- [Ruby](Ruby/xor.rb)
 - [Visual Basic.NET](VB.NET/XORCrypto.vb)
 
 This implementation goes beyond the basic single-key model to use multiple keys in a particular sequence, making it that much more difficult to brute-force.

Ruby/xor.rb

@@ -0,0 +1,15 @@
+def encryptDecrypt(string)
+    key = ['K', 'C', 'Q']
+    result = ""
+    codepoints = string.each_codepoint.to_a
+    codepoints.each_index do |i|
+        result += (codepoints[i] ^ key[i % key.size].ord).chr
+    end
+    result
+end
+
+encrypted = encryptDecrypt("kylewbanks.com")
+puts "Encrypted: #{encrypted}"
+
+decrypted = encryptDecrypt(encrypted)
+puts "Decrypted: #{decrypted}"