93 lines
3.2 KiB
Ruby
93 lines
3.2 KiB
Ruby
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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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.hex(64)
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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_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.hex(64), SecureRandom.hex(64), :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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private
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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 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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