From a4e1e5d6329f31cb5a1ee7561fdf05dd5559ef7c Mon Sep 17 00:00:00 2001 From: Vipul A M Date: Wed, 15 May 2013 19:41:04 +0530 Subject: Use `Base.strict_decode64` instead of `Base.decode64` just as we do in encoding; Also reduce extra object allocation by creating string directly instead of join on Array --- activesupport/lib/active_support/message_encryptor.rb | 6 +++--- activesupport/lib/active_support/message_verifier.rb | 6 +++++- activesupport/test/message_encryptor_test.rb | 13 ++++++++++++- 3 files changed, 20 insertions(+), 5 deletions(-) (limited to 'activesupport') diff --git a/activesupport/lib/active_support/message_encryptor.rb b/activesupport/lib/active_support/message_encryptor.rb index bffdfc6201..7773611e11 100644 --- a/activesupport/lib/active_support/message_encryptor.rb +++ b/activesupport/lib/active_support/message_encryptor.rb @@ -76,12 +76,12 @@ module ActiveSupport encrypted_data = cipher.update(@serializer.dump(value)) encrypted_data << cipher.final - [encrypted_data, iv].map {|v| ::Base64.strict_encode64(v)}.join("--") + "#{::Base64.strict_encode64 encrypted_data}--#{::Base64.strict_encode64 iv}" end def _decrypt(encrypted_message) cipher = new_cipher - encrypted_data, iv = encrypted_message.split("--").map {|v| ::Base64.decode64(v)} + encrypted_data, iv = encrypted_message.split("--").map {|v| ::Base64.strict_decode64(v)} cipher.decrypt cipher.key = @secret @@ -91,7 +91,7 @@ module ActiveSupport decrypted_data << cipher.final @serializer.load(decrypted_data) - rescue OpenSSLCipherError, TypeError + rescue OpenSSLCipherError, TypeError, ArgumentError raise InvalidMessage end diff --git a/activesupport/lib/active_support/message_verifier.rb b/activesupport/lib/active_support/message_verifier.rb index e0cd92ae3c..a35d5980fe 100644 --- a/activesupport/lib/active_support/message_verifier.rb +++ b/activesupport/lib/active_support/message_verifier.rb @@ -37,7 +37,11 @@ module ActiveSupport data, digest = signed_message.split("--") if data.present? && digest.present? && secure_compare(digest, generate_digest(data)) - @serializer.load(::Base64.decode64(data)) + begin + @serializer.load(::Base64.strict_decode64(data)) + rescue ArgumentError + raise InvalidSignature + end else raise InvalidSignature end diff --git a/activesupport/test/message_encryptor_test.rb b/activesupport/test/message_encryptor_test.rb index 509c453b5c..10f3842963 100644 --- a/activesupport/test/message_encryptor_test.rb +++ b/activesupport/test/message_encryptor_test.rb @@ -66,6 +66,17 @@ class MessageEncryptorTest < ActiveSupport::TestCase ActiveSupport.use_standard_json_time_format = prev end + def test_message_obeys_strict_encoding + bad_encoding_characters = "\n!@#" + message, iv = @encryptor.encrypt_and_sign("This is a very \n\nhumble string"+bad_encoding_characters) + + assert_not_decrypted("#{::Base64.encode64 message.to_s}--#{::Base64.encode64 iv.to_s}") + assert_not_verified("#{::Base64.encode64 message.to_s}--#{::Base64.encode64 iv.to_s}") + + assert_not_decrypted([iv, message] * bad_encoding_characters) + assert_not_verified([iv, message] * bad_encoding_characters) + end + private def assert_not_decrypted(value) @@ -81,7 +92,7 @@ class MessageEncryptorTest < ActiveSupport::TestCase end def munge(base64_string) - bits = ::Base64.decode64(base64_string) + bits = ::Base64.strict_decode64(base64_string) bits.reverse! ::Base64.strict_encode64(bits) end -- cgit v1.2.3