update client key encryption

app/controllers/clients_controller.rb

@@ -26,9 +26,8 @@ class ClientsController < ApplicationController
   def create
     @client = Client.new(client_params)
     cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
-    key=cipher.random_key
-    secrect_key= Base64.encode64(key)
-    @client.secrect_key=secrect_key  
+    secrect_key = cipher.random_key
+    @client.secrect_key = secrect_key
 
     respond_to do |format|
       if @client.save

app/models/batch_line_item.rb

@@ -140,14 +140,11 @@ class BatchLineItem < ApplicationRecord
       end
     end
   	def self.encrypted(message,encrypt_key)
-  		cipher = OpenSSL::Cipher::Cipher.new("aes-128-cbc")
+  		cipher = OpenSSL::Cipher.new("aes-256-cbc")
   		cipher.encrypt
 
-  		key = Digest::SHA1.hexdigest(encrypt_key)
-  		iv =encrypt_key
-
   		cipher.key = encrypt_key
-  		cipher.iv = encrypt_key
+  		cipher.iv = encrypt_key[0,16]
 
   		encrypted = cipher.update(message)
   		encrypted << cipher.final

app/models/client.rb

@@ -3,4 +3,12 @@ class Client < ApplicationRecord
 	validates :name,  :uniqueness => {:message =>"This client name is already taken." } ,on: :create
 	validates :location_code ,presence: { message: "Please enter  client location code." }
 	validates :location_code,  :uniqueness => {:message =>"This location code is already taken." } ,on: :create
+
+  def secrect_key
+    Base64.decode64(super)
+  end
+
+  def secrect_key=(value)
+    super(Base64.encode64(value))
+  end
 end