Better auth. Fuck yeah!

lib/vkontakte.rb

@@ -0,0 +1,16 @@
+module Vkontakte
+  @@secret_key = 'sdgwSbl3nNE4ZxafuPrp'
+  
+  def self.check params
+    unless params[:expire].nil? or params[:mid].nil? or params[:secret].nil? or params[:sid].nil? or params[:sig].nil?
+      return true if self.sign(params) == params[:sig]
+    end
+    false
+  end
+  
+  private
+  
+  def self.sign params
+    Digest::MD5.hexdigest(%w(expire mid secret sid).map{ |_| _+'='+params[_.to_sym] }.join()+@@secret_key)
+  end
+end