Ensure all encryptor returns a symbol. Get the class using encryptor_class.

lib/devise.rb

@@ -46,15 +46,8 @@ module Devise
   @@confirm_within = 0.days
 
   # Used to define the password encryption algorithm.
-  def self.encryptor=(value)
-    @@encryptor = if value.is_a?(Symbol)
-      ::Devise::Encryptors.const_get(value.to_s.classify)
-    else
-      value
-    end
-  end
-  mattr_reader :encryptor
-  @@encryptor = ::Devise::Encryptors::Sha1
+  mattr_accessor :encryptor
+  @@encryptor = :sha1
 
   # Store scopes mappings.
   mattr_accessor :mappings

lib/devise/models.rb

@@ -19,12 +19,6 @@ module Devise
     def self.config(mod, *accessors) #:nodoc:
       accessors.each do |accessor|
         mod.class_eval <<-METHOD, __FILE__, __LINE__
-          def #{accessor}
-            self.class.#{accessor}
-          end
-        METHOD
-
-        mod.const_get(:ClassMethods).class_eval <<-METHOD, __FILE__, __LINE__
           def #{accessor}
             if defined?(@#{accessor})
               @#{accessor}

lib/devise/models/authenticatable.rb

@@ -54,9 +54,9 @@ module Devise
 
       protected
 
-        # Digests the password using the configured encryptor
+        # Digests the password using the configured encryptor.
         def password_digest(password)
-          encryptor.digest(password, stretches, password_salt, pepper)
+          self.class.encryptor_class.digest(password, self.class.stretches, password_salt, self.class.pepper)
         end
 
       module ClassMethods
@@ -104,9 +104,14 @@ module Devise
           raise "#{self} cannot serialize from #{klass} session since it's not its ancestors" unless klass <= self
           klass.find(:first, :conditions => { :id => id })
         end
-      end
 
-      Devise::Models.config(self, :pepper, :stretches, :encryptor, :authentication_keys)
+        # Returns the class for the configured encryptor.
+        def encryptor_class
+          @encryptor_class ||= ::Devise::Encryptors.const_get(encryptor.to_s.classify)
+        end
+
+        Devise::Models.config(self, :pepper, :stretches, :encryptor, :authentication_keys)
+      end
     end
   end
 end

lib/devise/models/confirmable.rb

@@ -101,7 +101,7 @@ module Devise
         #
         def confirmation_period_valid?
           confirmation_sent_at &&
-            ((Time.now.utc - confirmation_sent_at.utc) < confirm_within)
+            ((Time.now.utc - confirmation_sent_at.utc) < self.class.confirm_within)
         end
 
         # Checks whether the record is confirmed or not, yielding to the block
@@ -124,7 +124,6 @@ module Devise
         end
 
       module ClassMethods
-
         # Attempt to find a user by it's email. If a record is found, send new
         # confirmation instructions to it. If not user is found, returns a new user
         # with an email not found error.
@@ -148,9 +147,9 @@ module Devise
           end
           confirmable
         end
-      end
 
-      Devise::Models.config(self, :confirm_within)
+        Devise::Models.config(self, :confirm_within)
+      end
     end
   end
 end

lib/devise/models/recoverable.rb

@@ -57,7 +57,6 @@ module Devise
         end
 
       module ClassMethods
-
         # Attempt to find a user by it's email. If a record is found, send new
         # password instructions to it. If not user is found, returns a new user
         # with an email not found error.

lib/devise/models/rememberable.rb

@@ -70,11 +70,10 @@ module Devise
 
       # Remember token expires at created time + remember_for configuration
       def remember_expires_at
-        remember_created_at + remember_for
+        remember_created_at + self.class.remember_for
       end
 
       module ClassMethods
-
         # Create the cookie key using the record id and remember_token
         def serialize_into_cookie(rememberable)
           "#{rememberable.id}::#{rememberable.remember_token}"
@@ -86,9 +85,9 @@ module Devise
           rememberable = find_by_id(rememberable_id) if rememberable_id
           rememberable if rememberable.try(:valid_remember_token?, remember_token)
         end
-      end
 
-      Devise::Models.config(self, :remember_for)
+        Devise::Models.config(self, :remember_for)
+      end
     end
   end
 end

test/encryptors_test.rb

@@ -21,8 +21,8 @@ class Encryptors < ActiveSupport::TestCase
   Devise::ENCRYPTORS_LENGTH.each do |key, value|
     test "should have length #{value} for #{key.inspect}" do
       swap Devise, :encryptor => key do
-        assert_equal value, Devise.encryptor.digest('a', 2, 'b', 'c').size
+        assert_equal value, Devise::Encryptors.const_get(key.to_s.classify).digest('a', 2, 'b', 'c').size
       end
     end
   end
-end
+end

test/models/authenticatable_test.rb

@@ -3,7 +3,7 @@ require 'digest/sha1'
 
 class AuthenticatableTest < ActiveSupport::TestCase
 
-  def encrypt_password(user, pepper=User.pepper, stretches=User.stretches, encryptor = ::Devise::Encryptors::Sha1)
+  def encrypt_password(user, pepper=User.pepper, stretches=User.stretches, encryptor=::Devise::Encryptors::Sha1)
     encryptor.digest('123456', stretches, user.password_salt, pepper)
   end
 
@@ -82,24 +82,23 @@ class AuthenticatableTest < ActiveSupport::TestCase
   end
 
   test 'should fallback to devise stretches default configuring' do
-    begin
-      default_stretches = Devise.stretches
-      Devise.stretches = 1
+    swap Devise, :stretches => 1 do
       user = new_user
       assert_equal encrypt_password(user, nil, 1), user.encrypted_password
       assert_not_equal encrypt_password(user, nil, 2), user.encrypted_password
-    ensure
-      Devise.stretches = default_stretches
     end
   end
 
   test 'should respect encryptor configuration' do
-    begin
-      Devise.encryptor = ::Devise::Encryptors::Sha512
-      user = create_user
-      assert_equal user.encrypted_password, encrypt_password(user, User.pepper, User.stretches, ::Devise::Encryptors::Sha512)
-    ensure
-      Devise.encryptor = ::Devise::Encryptors::Sha1
+    User.instance_variable_set(:@encryptor_class, nil)
+
+    swap Devise, :encryptor => :sha512 do
+      begin
+        user = create_user
+        assert_equal user.encrypted_password, encrypt_password(user, User.pepper, User.stretches, ::Devise::Encryptors::Sha512)
+      ensure
+        User.instance_variable_set(:@encryptor_class, nil)
+      end
     end
   end
 

test/models_test.rb

@@ -90,19 +90,19 @@ class ActiveRecordTest < ActiveSupport::TestCase
   end
 
   test 'set a default value for stretches' do
-    assert_equal 15, Configurable.new.stretches
+    assert_equal 15, Configurable.stretches
   end
 
   test 'set a default value for pepper' do
-    assert_equal 'abcdef', Configurable.new.pepper
+    assert_equal 'abcdef', Configurable.pepper
   end
 
   test 'set a default value for confirm_within' do
-    assert_equal 5.days, Configurable.new.confirm_within
+    assert_equal 5.days, Configurable.confirm_within
   end
 
   test 'set a default value for remember_for' do
-    assert_equal 7.days, Configurable.new.remember_for
+    assert_equal 7.days, Configurable.remember_for
   end
 
   test 'set null fields on migrations' do