Module Digest

• activesupport/lib/active_support/core_ext/digest/uuid.rb
• activesupport/lib/active_support/security_utils.rb
• activesupport/test/core_ext/digest/uuid_test.rb
• activesupport/test/key_generator_test.rb
• activesupport/test/message_encryptor_test.rb
• activesupport/test/message_verifier_test.rb