Currently, in the Rust implementation of `np_ffi_CredentialSlab_add_v0_credential`, we take the underlying buffer of the passed `V0MatchableCredential` and turn it into a Rust `&[u8]` by calling `unsafe slice::from_raw_parts`. The safety contract of `from_raw_parts` states that the passed pointer can neither be null, nor be unaligned. In the `advertisment_decoder_rust_impl.cc` we have a code path that leads to a null pointer being passed, though. We get a nullpointer if we pass a `std::vector` of size 0. This change fixes the issue by making sure we always pass a non-null buffer.
PiperOrigin-RevId: 729417182
Upon succesfully dectypting an advertisements, the decoding library returns the id of the credential which was used to decrypt. We then use this id to correlate the decoded adv back to the original shared_credential which was used to decrypt it and save this and propagate it in the result returned to the caller
PiperOrigin-RevId: 646179759
- Both implementations implement `AdvertisementDecoder` interface and provide the
concrete implementation for AdvertisementDecoderImpl
- cleanup missing includes as complained about by clang-tidy
PiperOrigin-RevId: 621187625
hai007