Allow to convert secure Hash with both symbol and string

lib/travis/event/secure_config.rb

@@ -37,7 +37,7 @@ def encrypt(config)
         def decrypt_element(key, element)
           if element.is_a?(Array) || element.is_a?(Hash)
             decrypt(element)
-          elsif key == :secure
+          elsif secure_key?(key)
             decrypt_value(element)
           else
             element
@@ -63,7 +63,7 @@ def decrypt_value(value)
         end
 
         def secure_key?(key)
-          key && key == :secure
+          key && (key == :secure || key == 'secure')
         end
     end
   end

lib/travis/model/build.rb

@@ -45,6 +45,7 @@ class Build < ActiveRecord::Base
   autoload :States,      'travis/model/build/states'
 
   include Compat, Matrix, States, Messages
+  include Travis::Model::EnvHelpers
 
   belongs_to :commit
   belongs_to :request

lib/travis/model/job.rb

@@ -23,6 +23,7 @@ def queued
   end
 
   include Cleanup, Compat
+  include Travis::Model::EnvHelpers
 
   has_one    :log, :class_name => 'Artifact::Log', :conditions => { :type => 'Artifact::Log' }, :dependent => :destroy
   has_many   :artifacts

spec/travis/event/secure_config_spec.rb

@@ -15,6 +15,10 @@
     secure_config.decrypt(:secure => crypted).should eql('hello world')
   end
 
+  it "decrypts with a string as a key" do
+    secure_config.decrypt('secure' => crypted).should eql('hello world')
+  end
+
   it "decrypts an array with a secure entry and a string" do
     secure_config.decrypt([{ :secure => crypted }, "hola mundo"]).should eql(['hello world', 'hola mundo'])
   end