mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
274 lines
11 KiB
Ruby
274 lines
11 KiB
Ruby
# frozen_string_literal: true
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require "abstract_unit"
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require "openssl"
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require "active_support/time"
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require "active_support/json"
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require_relative "metadata/shared_metadata_tests"
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class MessageEncryptorTest < ActiveSupport::TestCase
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class JSONSerializer
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def dump(value)
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ActiveSupport::JSON.encode(value)
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end
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def load(value)
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ActiveSupport::JSON.decode(value)
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end
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end
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def setup
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@secret = SecureRandom.random_bytes(32)
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@verifier = ActiveSupport::MessageVerifier.new(@secret, serializer: ActiveSupport::MessageEncryptor::NullSerializer)
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@encryptor = ActiveSupport::MessageEncryptor.new(@secret)
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@data = { some: "data", now: Time.local(2010) }
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end
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def test_encrypting_twice_yields_differing_cipher_text
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first_message = @encryptor.encrypt_and_sign(@data).split("--").first
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second_message = @encryptor.encrypt_and_sign(@data).split("--").first
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assert_not_equal first_message, second_message
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end
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def test_messing_with_either_encrypted_values_causes_failure
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text, iv = @verifier.verify(@encryptor.encrypt_and_sign(@data)).split("--")
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assert_not_decrypted([iv, text] * "--")
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assert_not_decrypted([text, munge(iv)] * "--")
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assert_not_decrypted([munge(text), iv] * "--")
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assert_not_decrypted([munge(text), munge(iv)] * "--")
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end
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def test_messing_with_verified_values_causes_failures
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text, iv = @encryptor.encrypt_and_sign(@data).split("--")
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assert_not_verified([iv, text] * "--")
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assert_not_verified([text, munge(iv)] * "--")
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assert_not_verified([munge(text), iv] * "--")
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assert_not_verified([munge(text), munge(iv)] * "--")
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end
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def test_signed_round_tripping
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message = @encryptor.encrypt_and_sign(@data)
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assert_equal @data, @encryptor.decrypt_and_verify(message)
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end
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def test_backwards_compat_for_64_bytes_key
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# 64 bit key
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secret = ["3942b1bf81e622559ed509e3ff274a780784fe9e75b065866bd270438c74da822219de3156473cc27df1fd590e4baf68c95eeb537b6e4d4c5a10f41635b5597e"].pack("H*")
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# Encryptor with 32 bit key, 64 bit secret for verifier
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encryptor = ActiveSupport::MessageEncryptor.new(secret[0..31], secret)
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# Message generated with 64 bit key
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message = "eHdGeExnZEwvMSt3U3dKaFl1WFo0TjVvYzA0eGpjbm5WSkt5MXlsNzhpZ0ZnbWhBWFlQZTRwaXE1bVJCS2oxMDZhYVp2dVN3V0lNZUlWQ3c2eVhQbnhnVjFmeVVubmhRKzF3WnZyWHVNMDg9LS1HSisyakJVSFlPb05ISzRMaXRzcFdBPT0=--831a1d54a3cda8a0658dc668a03dedcbce13b5ca"
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assert_equal "data", encryptor.decrypt_and_verify(message)[:some]
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end
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def test_alternative_serialization_method
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prev = ActiveSupport.use_standard_json_time_format
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ActiveSupport.use_standard_json_time_format = true
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encryptor = ActiveSupport::MessageEncryptor.new(SecureRandom.random_bytes(32), SecureRandom.random_bytes(128), serializer: JSONSerializer.new)
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message = encryptor.encrypt_and_sign({ :foo => 123, "bar" => Time.utc(2010) })
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exp = { "foo" => 123, "bar" => "2010-01-01T00:00:00.000Z" }
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assert_equal exp, encryptor.decrypt_and_verify(message)
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ensure
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ActiveSupport.use_standard_json_time_format = prev
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end
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def test_message_obeys_strict_encoding
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bad_encoding_characters = "\n!@#"
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message, iv = @encryptor.encrypt_and_sign("This is a very \n\nhumble string" + bad_encoding_characters)
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assert_not_decrypted("#{::Base64.encode64 message.to_s}--#{::Base64.encode64 iv.to_s}")
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assert_not_verified("#{::Base64.encode64 message.to_s}--#{::Base64.encode64 iv.to_s}")
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assert_not_decrypted([iv, message] * bad_encoding_characters)
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assert_not_verified([iv, message] * bad_encoding_characters)
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end
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def test_aead_mode_encryption
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, cipher: "aes-256-gcm")
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message = encryptor.encrypt_and_sign(@data)
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assert_equal @data, encryptor.decrypt_and_verify(message)
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end
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def test_aead_mode_with_hmac_cbc_cipher_text
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, cipher: "aes-256-gcm")
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assert_aead_not_decrypted(encryptor, "eHdGeExnZEwvMSt3U3dKaFl1WFo0TjVvYzA0eGpjbm5WSkt5MXlsNzhpZ0ZnbWhBWFlQZTRwaXE1bVJCS2oxMDZhYVp2dVN3V0lNZUlWQ3c2eVhQbnhnVjFmeVVubmhRKzF3WnZyWHVNMDg9LS1HSisyakJVSFlPb05ISzRMaXRzcFdBPT0=--831a1d54a3cda8a0658dc668a03dedcbce13b5ca")
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end
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def test_messing_with_aead_values_causes_failures
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, cipher: "aes-256-gcm")
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text, iv, auth_tag = encryptor.encrypt_and_sign(@data).split("--")
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assert_aead_not_decrypted(encryptor, [iv, text, auth_tag] * "--")
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assert_aead_not_decrypted(encryptor, [munge(text), iv, auth_tag] * "--")
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assert_aead_not_decrypted(encryptor, [text, munge(iv), auth_tag] * "--")
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assert_aead_not_decrypted(encryptor, [text, iv, munge(auth_tag)] * "--")
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assert_aead_not_decrypted(encryptor, [munge(text), munge(iv), munge(auth_tag)] * "--")
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assert_aead_not_decrypted(encryptor, [text, iv] * "--")
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assert_aead_not_decrypted(encryptor, [text, iv, auth_tag[0..-2]] * "--")
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end
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def test_backwards_compatibility_decrypt_previously_encrypted_messages_without_metadata
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secret = "\xB7\xF0\xBCW\xB1\x18`\xAB\xF0\x81\x10\xA4$\xF44\xEC\xA1\xDC\xC1\xDDD\xAF\xA9\xB8\x14\xCD\x18\x9A\x99 \x80)"
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encryptor = ActiveSupport::MessageEncryptor.new(secret, cipher: "aes-256-gcm")
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encrypted_message = "9cVnFs2O3lL9SPvIJuxBOLS51nDiBMw=--YNI5HAfHEmZ7VDpl--ddFJ6tXA0iH+XGcCgMINYQ=="
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assert_equal "Ruby on Rails", encryptor.decrypt_and_verify(encrypted_message)
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end
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def test_rotating_secret
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old_message = ActiveSupport::MessageEncryptor.new(secrets[:old], cipher: "aes-256-gcm").encrypt_and_sign("old")
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, cipher: "aes-256-gcm")
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encryptor.rotate secrets[:old]
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assert_equal "old", encryptor.decrypt_and_verify(old_message)
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end
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def test_rotating_serializer
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old_message = ActiveSupport::MessageEncryptor.new(secrets[:old], cipher: "aes-256-gcm", serializer: JSON).
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encrypt_and_sign({ ahoy: :hoy })
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, cipher: "aes-256-gcm", serializer: JSON)
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encryptor.rotate secrets[:old]
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assert_equal({ "ahoy" => "hoy" }, encryptor.decrypt_and_verify(old_message))
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end
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def test_rotating_aes_cbc_secrets
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old_encryptor = ActiveSupport::MessageEncryptor.new(secrets[:old], "old sign", cipher: "aes-256-cbc")
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old_message = old_encryptor.encrypt_and_sign("old")
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encryptor = ActiveSupport::MessageEncryptor.new(@secret)
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encryptor.rotate secrets[:old], "old sign", cipher: "aes-256-cbc"
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assert_equal "old", encryptor.decrypt_and_verify(old_message)
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end
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def test_multiple_rotations
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older_message = ActiveSupport::MessageEncryptor.new(secrets[:older], "older sign").encrypt_and_sign("older")
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old_message = ActiveSupport::MessageEncryptor.new(secrets[:old], "old sign").encrypt_and_sign("old")
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encryptor = ActiveSupport::MessageEncryptor.new(@secret)
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encryptor.rotate secrets[:old], "old sign"
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encryptor.rotate secrets[:older], "older sign"
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assert_equal "new", encryptor.decrypt_and_verify(encryptor.encrypt_and_sign("new"))
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assert_equal "old", encryptor.decrypt_and_verify(old_message)
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assert_equal "older", encryptor.decrypt_and_verify(older_message)
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end
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def test_on_rotation_is_called_and_returns_modified_messages
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older_message = ActiveSupport::MessageEncryptor.new(secrets[:older], "older sign").encrypt_and_sign({ encoded: "message" })
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encryptor = ActiveSupport::MessageEncryptor.new(@secret)
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encryptor.rotate secrets[:old]
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encryptor.rotate secrets[:older], "older sign"
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rotated = false
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message = encryptor.decrypt_and_verify(older_message, on_rotation: proc { rotated = true })
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assert_equal({ encoded: "message" }, message)
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assert rotated
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end
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def test_on_rotation_can_be_passed_at_the_constructor_level
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older_message = ActiveSupport::MessageEncryptor.new(secrets[:older], "older sign").encrypt_and_sign({ encoded: "message" })
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rotated = rotated = false # double assigning to suppress "assigned but unused variable" warning
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, on_rotation: proc { rotated = true })
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encryptor.rotate secrets[:older], "older sign"
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assert_changes(:rotated, from: false, to: true) do
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message = encryptor.decrypt_and_verify(older_message)
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assert_equal({ encoded: "message" }, message)
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end
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end
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def test_on_rotation_option_takes_precedence_over_the_one_given_in_constructor
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older_message = ActiveSupport::MessageEncryptor.new(secrets[:older], "older sign").encrypt_and_sign({ encoded: "message" })
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rotated = rotated = false # double assigning to suppress "assigned but unused variable" warning
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, on_rotation: proc { rotated = true })
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encryptor.rotate secrets[:older], "older sign"
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assert_changes(:rotated, from: false, to: "Yes") do
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message = encryptor.decrypt_and_verify(older_message, on_rotation: proc { rotated = "Yes" })
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assert_equal({ encoded: "message" }, message)
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end
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end
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def test_with_rotated_metadata
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old_message = ActiveSupport::MessageEncryptor.new(secrets[:old], cipher: "aes-256-gcm").
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encrypt_and_sign("metadata", purpose: :rotation)
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encryptor = ActiveSupport::MessageEncryptor.new(@secret, cipher: "aes-256-gcm")
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encryptor.rotate secrets[:old]
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assert_equal "metadata", encryptor.decrypt_and_verify(old_message, purpose: :rotation)
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end
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private
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def assert_aead_not_decrypted(encryptor, value)
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assert_raise(ActiveSupport::MessageEncryptor::InvalidMessage) do
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encryptor.decrypt_and_verify(value)
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end
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end
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def assert_not_decrypted(value)
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assert_raise(ActiveSupport::MessageEncryptor::InvalidMessage) do
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@encryptor.decrypt_and_verify(@verifier.generate(value))
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end
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end
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def assert_not_verified(value)
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assert_raise(ActiveSupport::MessageVerifier::InvalidSignature) do
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@encryptor.decrypt_and_verify(value)
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end
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end
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def secrets
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@secrets ||= Hash.new { |h, k| h[k] = SecureRandom.random_bytes(32) }
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end
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def munge(base64_string)
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bits = ::Base64.strict_decode64(base64_string)
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bits.reverse!
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::Base64.strict_encode64(bits)
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end
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end
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class MessageEncryptorMetadataTest < ActiveSupport::TestCase
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include SharedMessageMetadataTests
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setup do
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@secret = SecureRandom.random_bytes(32)
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@encryptor = ActiveSupport::MessageEncryptor.new(@secret, **encryptor_options)
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end
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private
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def generate(message, **options)
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@encryptor.encrypt_and_sign(message, **options)
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end
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def parse(data, **options)
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@encryptor.decrypt_and_verify(data, **options)
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end
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def encryptor_options; {} end
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end
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class MessageEncryptorMetadataMarshalTest < MessageEncryptorMetadataTest
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private
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def encryptor_options
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{ serializer: Marshal }
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end
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end
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class MessageEncryptorMetadataJSONTest < MessageEncryptorMetadataTest
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private
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def encryptor_options
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{ serializer: MessageEncryptorTest::JSONSerializer.new }
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end
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end
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