sha3

sha2: RISC-V scalar crypto extension support (#614) #1177

Job	Run time
minimal-versions / minimal-versions	2m 52s
set-msrv / set-msrv	3s
build (1.71.0, thumbv7em-none-eabi)	22s
cross (1.71.0, aarch64-unknown-linux-gnu, default)	1m 7s
build (1.71.0, wasm32-unknown-unknown)	25s
test (1.71.0)	3m 33s
cross (1.71.0, powerpc-unknown-linux-gnu, default)	1m 20s
test (stable)	3m 21s
build (stable, thumbv7em-none-eabi)	18s
cross (stable, aarch64-unknown-linux-gnu, default)	57s
build (stable, wasm32-unknown-unknown)	18s
cross (stable, powerpc-unknown-linux-gnu, default)	1m 7s
	15m 43s

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