DX-67209 updated aes_encrypt/decrypt #29
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Component: C++ - Gandiva
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cpp/src/gandiva/encrypt_utils.cc
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| if (!en_ctx) { | ||
| throw std::runtime_error("could not create a new evp cipher ctx for encryption"); | ||
| } | ||
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| if (!EVP_EncryptInit_ex(en_ctx, EVP_aes_128_ecb(), nullptr, | ||
| switch (key_len) { |
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This could be combined with the other similar code below into a helper function.
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| if (key_data_len == 16 || key_data_len == 24 || key_data_len == 32) { | ||
| kAesBlockSize = static_cast<int64_t>(key_data_len); | ||
| } else { | ||
| gdv_fn_context_set_error_msg(context, "invalid key length"); | ||
| *out_len = 0; | ||
| return nullptr; |
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Don't the helper functions already check the length? I think it would be better to just do the check in one place since the code would be easier to read and better tested. It doesn't look like this path is being tested since the unit tests call the helper functions.
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aes_ecrypt/decrypt support 128, 192, 254 bit key and this strict requirement - key should be 16 or 24 or 32 chars.
If not - error will be returned.