3 files changed, 2 insertions, 30 deletions
diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 253b647aca..44b8fa843d 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,8 +1,3 @@
-*   Add `config.action_dispatch.cookies_digest` option for setting custom
-    digest. The default remains the same - 'SHA1'.
-
-    *Łukasz Strzałkowski*
-
 *   Extract source code for the entire exception stack trace for
     better debugging and diagnosis.
 
diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb
index 55bb9de173..ac9e5effe2 100644
--- a/actionpack/lib/action_dispatch/middleware/cookies.rb
+++ b/actionpack/lib/action_dispatch/middleware/cookies.rb
@@ -90,7 +90,6 @@ module ActionDispatch
     SECRET_TOKEN = "action_dispatch.secret_token".freeze
     SECRET_KEY_BASE = "action_dispatch.secret_key_base".freeze
     COOKIES_SERIALIZER = "action_dispatch.cookies_serializer".freeze
-    COOKIES_DIGEST = "action_dispatch.cookies_digest".freeze
 
     # Cookies can typically store 4096 bytes.
     MAX_COOKIE_SIZE = 4096
@@ -213,8 +212,7 @@ module ActionDispatch
           secret_token: env[SECRET_TOKEN],
           secret_key_base: env[SECRET_KEY_BASE],
           upgrade_legacy_signed_cookies: env[SECRET_TOKEN].present? && env[SECRET_KEY_BASE].present?,
-          serializer: env[COOKIES_SERIALIZER],
-          digest: env[COOKIES_DIGEST]
+          serializer: env[COOKIES_SERIALIZER]
         }
       end
 
@@ -443,10 +441,6 @@ module ActionDispatch
             serializer
           end
         end
-
-        def digest
-          @options[:digest] || 'SHA1'
-        end
     end
 
     class SignedCookieJar #:nodoc:
@@ -457,7 +451,7 @@ module ActionDispatch
         @parent_jar = parent_jar
         @options = options
         secret = key_generator.generate_key(@options[:signed_cookie_salt])
-        @verifier = ActiveSupport::MessageVerifier.new(secret, digest: digest, serializer: NullSerializer)
+        @verifier = ActiveSupport::MessageVerifier.new(secret, serializer: NullSerializer)
       end
 
       def [](name)
diff --git a/actionpack/test/dispatch/cookies_test.rb b/actionpack/test/dispatch/cookies_test.rb
index 744143fc2c..0f145666d1 100644
--- a/actionpack/test/dispatch/cookies_test.rb
+++ b/actionpack/test/dispatch/cookies_test.rb
@@ -369,23 +369,6 @@ class CookiesTest < ActionController::TestCase
     assert_equal 'Jamie', @controller.send(:cookies).permanent[:user_name]
   end
 
-  def test_signed_cookie_using_default_digest
-    get :set_signed_cookie
-    cookies = @controller.send :cookies
-    assert_not_equal 45, cookies[:user_id]
-    assert_equal 45, cookies.signed[:user_id]
-    assert_equal 'SHA1', cookies.signed.instance_variable_get(:"@verifier").instance_variable_get(:"@digest")
-  end
-
-  def test_signed_cookie_using_custom_digest
-    @request.env["action_dispatch.cookies_digest"] = 'SHA256'
-    get :set_signed_cookie
-    cookies = @controller.send :cookies
-    assert_not_equal 45, cookies[:user_id]
-    assert_equal 45, cookies.signed[:user_id]
-    assert_equal 'SHA256', cookies.signed.instance_variable_get(:"@verifier").instance_variable_get(:"@digest")
-  end
-
   def test_signed_cookie_using_default_serializer
     get :set_signed_cookie
     cookies = @controller.send :cookies