got the code kicked off so we can encrypt SSN(s) in the database

app/models/work_info.rb

@@ -2,12 +2,12 @@ class WorkInfo < ActiveRecord::Base
   attr_accessible :DoB, :SSN, :bonuses, :income, :years_worked
   belongs_to :user
   has_one :key_management, :foreign_key => :user_id, :primary_key => :user_id, :dependent => :destroy
-  before_save :encrypt_ssn
+  #before_save :encrypt_ssn
  
   
   # We should probably use this
   def last_four
-    "***-**-" << self.SSN[-4,4]
+     "***-**-" << self.decrypt_ssn[-4,4]
   end
   
   def encrypt_ssn
@@ -33,9 +33,8 @@ class WorkInfo < ActiveRecord::Base
   end
   
   def iv
-    "asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf"
-    #self.key_management.iv
-    #raise "No IV for this User" if !(key_management.iv)
+    raise "No IV for this User" if !(self.key_management.iv)
+    self.key_management.iv
   end
   
   def cipher_type