`kdf` crate #3072

Job	Run time
build (1.85.0, thumbv7em-none-eabi)	17s
build (stable, wasm32-unknown-unknown)	17s
build (stable, thumbv7em-none-eabi)	21s
test (1.85.0)	26s
build (1.85.0, wasm32-unknown-unknown)	22s
test (stable)	18s
minimal-versions	0s
	2m 1s

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