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Uses the `MaybeBox` type added in #309 to offload large values onto the heap when the `alloc` feature of the crate has been enabled.
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Uses the `MaybeBox` type added in #309 to offload large values onto the heap when the `alloc` feature of the crate has been enabled.
tarcieri
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Uses the `MaybeBox` type added in #309 to offload large values onto the heap when the `alloc` feature of the crate has been enabled.
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## Added - `MaybeBox` type (#309)
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The `MaybeBox` type was moved to `module-lattice` so it could also be used with the `ml-kem` crate. See RustCrypto/KEMs#309
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Adds a type which is always available, but when the newly added
allocfeature is enabled, provides opportunistic heap allocation withBox, falling back on stack allocation if it is not.Originally added to the
ml-dsacrate in RustCrypto/signatures#1320 to address the large size of post-quantum keys and signatures while still retainingno_allocsupport.However, it is generally useful anywhere we work with secret values to e.g. prevent moves from making copies of them on the stack, even if they aren't excessively large.