pkcs1

der: introduce an `AnyLike` trait to mark parameters #3002

Job	Run time
build (1.72.0, thumbv7em-none-eabi)	20s
minimal-versions	0s
build (1.72.0, wasm32-unknown-unknown)	20s
test (1.72.0)	21s
build (stable, thumbv7em-none-eabi)	25s
test (stable)	12s
build (stable, wasm32-unknown-unknown)	13s
	1m 51s

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