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APIs like the cipher crate's BlockEncrypt::encrypt_blocks
take a slice of GenericArrays. However, if you're starting with a flat &[u8]
, it's unergonomic to get to the required type. The unstable slice::as_chunks
gives you &[[u8; N]]
, but going from that to &[GenericArray<u8, _>]
seems impossible without a pointer cast or transmute. However, that pointer cast or transmute is valid because GenericArray is repr(transparent)
, and it would be nice™ if the generic-array crate provided that operation as a safe wrapper.
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