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Kupyna: implemented hashing function #1115

Job	Run time
cross (1.72.0, aarch64-unknown-linux-gnu, default)	40s
cross (1.72.0, powerpc-unknown-linux-gnu, default)	35s
cross (stable, aarch64-unknown-linux-gnu, default)	37s
cross (stable, powerpc-unknown-linux-gnu, default)	31s
minimal-versions / minimal-versions	36s
set-msrv / set-msrv	3s
linux (x86_64-unknown-linux-gnu, 1.72.0)	40s
build (1.72.0, thumbv7em-none-eabi)	24s
linux (x86_64-unknown-linux-gnu, stable)	29s
macos (1.72.0)	27s
build (1.72.0, wasm32-unknown-unknown)	18s
macos (stable)	21s
build (1.72.0, loongarch64-unknown-linux-gnu)	21s
build (stable, thumbv7em-none-eabi)	13s
windows (x86_64-pc-windows-gnu, 1.72.0)	54s
build (stable, wasm32-unknown-unknown)	12s
windows (x86_64-pc-windows-gnu, stable)	1m 46s
build (stable, loongarch64-unknown-linux-gnu)	17s
	9m 24s

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